124 files changed, 1481 insertions, 1129 deletions

diff --git a/Documentation/fujitsu/frv/kernel-ABI.txt b/Documentation/fujitsu/frv/kernel-ABI.txt
new file mode 100644
index 000000000000..0ed9b0a779bc
--- /dev/null
+++ b/Documentation/fujitsu/frv/kernel-ABI.txt
@@ -0,0 +1,234 @@
+                                 =================================
+                                 INTERNAL KERNEL ABI FOR FR-V ARCH
+                                 =================================
+
+The internal FRV kernel ABI is not quite the same as the userspace ABI. A number of the registers
+are used for special purposed, and the ABI is not consistent between modules vs core, and MMU vs
+no-MMU.
+
+This partly stems from the fact that FRV CPUs do not have a separate supervisor stack pointer, and
+most of them do not have any scratch registers, thus requiring at least one general purpose
+register to be clobbered in such an event. Also, within the kernel core, it is possible to simply
+jump or call directly between functions using a relative offset. This cannot be extended to modules
+for the displacement is likely to be too far. Thus in modules the address of a function to call
+must be calculated in a register and then used, requiring two extra instructions.
+
+This document has the following sections:
+
+ (*) System call register ABI
+ (*) CPU operating modes
+ (*) Internal kernel-mode register ABI
+ (*) Internal debug-mode register ABI
+ (*) Virtual interrupt handling
+
+
+========================
+SYSTEM CALL REGISTER ABI
+========================
+
+When a system call is made, the following registers are effective:
+
+        REGISTERS       CALL                    RETURN
+        =============== ======================= =======================
+        GR7             System call number      Preserved
+        GR8             Syscall arg #1          Return value
+        GR9-GR13        Syscall arg #2-6        Preserved
+
+
+===================
+CPU OPERATING MODES
+===================
+
+The FR-V CPU has three basic operating modes. In order of increasing capability:
+
+  (1) User mode.
+
+      Basic userspace running mode.
+
+  (2) Kernel mode.
+
+      Normal kernel mode. There are many additional control registers available that may be
+      accessed in this mode, in addition to all the stuff available to user mode. This has two
+      submodes:
+
+      (a) Exceptions enabled (PSR.T == 1).
+
+          Exceptions will invoke the appropriate normal kernel mode handler. On entry to the
+          handler, the PSR.T bit will be cleared.
+
+      (b) Exceptions disabled (PSR.T == 0).
+
+          No exceptions or interrupts may happen. Any mandatory exceptions will cause the CPU to
+          halt unless the CPU is told to jump into debug mode instead.
+
+  (3) Debug mode.
+
+      No exceptions may happen in this mode. Memory protection and management exceptions will be
+      flagged for later consideration, but the exception handler won't be invoked. Debugging traps
+      such as hardware breakpoints and watchpoints will be ignored. This mode is entered only by
+      debugging events obtained from the other two modes.
+
+      All kernel mode registers may be accessed, plus a few extra debugging specific registers.
+
+
+=================================
+INTERNAL KERNEL-MODE REGISTER ABI
+=================================
+
+There are a number of permanent register assignments that are set up by entry.S in the exception
+prologue. Note that there is a complete set of exception prologues for each of user->kernel
+transition and kernel->kernel transition. There are also user->debug and kernel->debug mode
+transition prologues.
+
+
+        REGISTER        FLAVOUR USE
+        =============== ======= ====================================================
+        GR1                     Supervisor stack pointer
+        GR15                    Current thread info pointer
+        GR16                    GP-Rel base register for small data
+        GR28                    Current exception frame pointer (__frame)
+        GR29                    Current task pointer (current)
+        GR30                    Destroyed by kernel mode entry
+        GR31            NOMMU   Destroyed by debug mode entry
+        GR31            MMU     Destroyed by TLB miss kernel mode entry
+        CCR.ICC2                Virtual interrupt disablement tracking
+        CCCR.CC3                Cleared by exception prologue (atomic op emulation)
+        SCR0            MMU     See mmu-layout.txt.
+        SCR1            MMU     See mmu-layout.txt.
+        SCR2            MMU     Save for EAR0 (destroyed by icache insns in debug mode)
+        SCR3            MMU     Save for GR31 during debug exceptions
+        DAMR/IAMR       NOMMU   Fixed memory protection layout.
+        DAMR/IAMR       MMU     See mmu-layout.txt.
+
+
+Certain registers are also used or modified across function calls:
+
+        REGISTER        CALL                            RETURN
+        =============== =============================== ===============================
+        GR0             Fixed Zero                      -
+        GR2             Function call frame pointer
+        GR3             Special                         Preserved
+        GR3-GR7         -                               Clobbered
+        GR8             Function call arg #1            Return value (or clobbered)
+        GR9             Function call arg #2            Return value MSW (or clobbered)
+        GR10-GR13       Function call arg #3-#6         Clobbered
+        GR14            -                               Clobbered
+        GR15-GR16       Special                         Preserved
+        GR17-GR27       -                               Preserved
+        GR28-GR31       Special                         Only accessed explicitly
+        LR              Return address after CALL       Clobbered
+        CCR/CCCR        -                               Mostly Clobbered
+
+
+================================
+INTERNAL DEBUG-MODE REGISTER ABI
+================================
+
+This is the same as the kernel-mode register ABI for functions calls. The difference is that in
+debug-mode there's a different stack and a different exception frame. Almost all the global
+registers from kernel-mode (including the stack pointer) may be changed.
+
+        REGISTER        FLAVOUR USE
+        =============== ======= ====================================================
+        GR1                     Debug stack pointer
+        GR16                    GP-Rel base register for small data
+        GR31                    Current debug exception frame pointer (__debug_frame)
+        SCR3            MMU     Saved value of GR31
+
+
+Note that debug mode is able to interfere with the kernel's emulated atomic ops, so it must be
+exceedingly careful not to do any that would interact with the main kernel in this regard. Hence
+the debug mode code (gdbstub) is almost completely self-contained. The only external code used is
+the sprintf family of functions.
+
+Futhermore, break.S is so complicated because single-step mode does not switch off on entry to an
+exception. That means unless manually disabled, single-stepping will blithely go on stepping into
+things like interrupts. See gdbstub.txt for more information.
+
+
+==========================
+VIRTUAL INTERRUPT HANDLING
+==========================
+
+Because accesses to the PSR is so slow, and to disable interrupts we have to access it twice (once
+to read and once to write), we don't actually disable interrupts at all if we don't have to. What
+we do instead is use the ICC2 condition code flags to note virtual disablement, such that if we
+then do take an interrupt, we note the flag, really disable interrupts, set another flag and resume
+execution at the point the interrupt happened. Setting condition flags as a side effect of an
+arithmetic or logical instruction is really fast. This use of the ICC2 only occurs within the
+kernel - it does not affect userspace.
+
+The flags we use are:
+
+ (*) CCR.ICC2.Z [Zero flag]
+
+     Set to virtually disable interrupts, clear when interrupts are virtually enabled. Can be
+     modified by logical instructions without affecting the Carry flag.
+
+ (*) CCR.ICC2.C [Carry flag]
+
+     Clear to indicate hardware interrupts are really disabled, set otherwise.
+
+
+What happens is this:
+
+ (1) Normal kernel-mode operation.
+
+        ICC2.Z is 0, ICC2.C is 1.
+
+ (2) An interrupt occurs. The exception prologue examines ICC2.Z and determines that nothing needs
+     doing. This is done simply with an unlikely BEQ instruction.
+
+ (3) The interrupts are disabled (local_irq_disable)
+
+        ICC2.Z is set to 1.
+
+ (4) If interrupts were then re-enabled (local_irq_enable):
+
+        ICC2.Z would be set to 0.
+
+     A TIHI #2 instruction (trap #2 if condition HI - Z==0 && C==0) would be used to trap if
+     interrupts were now virtually enabled, but physically disabled - which they're not, so the
+     trap isn't taken. The kernel would then be back to state (1).
+
+ (5) An interrupt occurs. The exception prologue examines ICC2.Z and determines that the interrupt
+     shouldn't actually have happened. It jumps aside, and there disabled interrupts by setting
+     PSR.PIL to 14 and then it clears ICC2.C.
+
+ (6) If interrupts were then saved and disabled again (local_irq_save):
+
+        ICC2.Z would be shifted into the save variable and masked off (giving a 1).
+
+        ICC2.Z would then be set to 1 (thus unchanged), and ICC2.C would be unaffected (ie: 0).
+
+ (7) If interrupts were then restored from state (6) (local_irq_restore):
+
+        ICC2.Z would be set to indicate the result of XOR'ing the saved value (ie: 1) with 1, which
+        gives a result of 0 - thus leaving ICC2.Z set.
+
+        ICC2.C would remain unaffected (ie: 0).
+
+     A TIHI #2 instruction would be used to again assay the current state, but this would do
+     nothing as Z==1.
+
+ (8) If interrupts were then enabled (local_irq_enable):
+
+        ICC2.Z would be cleared. ICC2.C would be left unaffected. Both flags would now be 0.
+
+     A TIHI #2 instruction again issued to assay the current state would then trap as both Z==0
+     [interrupts virtually enabled] and C==0 [interrupts really disabled] would then be true.
+
+ (9) The trap #2 handler would simply enable hardware interrupts (set PSR.PIL to 0), set ICC2.C to
+     1 and return.
+
+(10) Immediately upon returning, the pending interrupt would be taken.
+
+(11) The interrupt handler would take the path of actually processing the interrupt (ICC2.Z is
+     clear, BEQ fails as per step (2)).
+
+(12) The interrupt handler would then set ICC2.C to 1 since hardware interrupts are definitely
+     enabled - or else the kernel wouldn't be here.
+
+(13) On return from the interrupt handler, things would be back to state (1).
+
+This trap (#2) is only available in kernel mode. In user mode it will result in SIGILL.
diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt
index 0ea5a0c6e827..2c3b1eae4280 100644
--- a/Documentation/kprobes.txt
+++ b/Documentation/kprobes.txt
@@ -136,17 +136,20 @@ Kprobes, jprobes, and return probes are implemented on the following
 architectures:
 
 - i386
-- x86_64 (AMD-64, E64MT)
+- x86_64 (AMD-64, EM64T)
 - ppc64
-- ia64 (Support for probes on certain instruction types is still in progress.)
+- ia64 (Does not support probes on instruction slot1.)
 - sparc64 (Return probes not yet implemented.)
 
 3. Configuring Kprobes
 
 When configuring the kernel using make menuconfig/xconfig/oldconfig,
-ensure that CONFIG_KPROBES is set to "y".  Under "Kernel hacking",
-look for "Kprobes".  You may have to enable "Kernel debugging"
-(CONFIG_DEBUG_KERNEL) before you can enable Kprobes.
+ensure that CONFIG_KPROBES is set to "y".  Under "Instrumentation
+Support", look for "Kprobes".
+
+So that you can load and unload Kprobes-based instrumentation modules,
+make sure "Loadable module support" (CONFIG_MODULES) and "Module
+unloading" (CONFIG_MODULE_UNLOAD) are set to "y".
 
 You may also want to ensure that CONFIG_KALLSYMS and perhaps even
 CONFIG_KALLSYMS_ALL are set to "y", since kallsyms_lookup_name()
@@ -262,18 +265,18 @@ at any time after the probe has been registered.
 
 5. Kprobes Features and Limitations
 
-As of Linux v2.6.12, Kprobes allows multiple probes at the same
-address.  Currently, however, there cannot be multiple jprobes on
-the same function at the same time.
+Kprobes allows multiple probes at the same address.  Currently,
+however, there cannot be multiple jprobes on the same function at
+the same time.
 
 In general, you can install a probe anywhere in the kernel.
 In particular, you can probe interrupt handlers.  Known exceptions
 are discussed in this section.
 
-For obvious reasons, it's a bad idea to install a probe in
-the code that implements Kprobes (mostly kernel/kprobes.c and
-arch/*/kernel/kprobes.c).  A patch in the v2.6.13 timeframe instructs
-Kprobes to reject such requests.
+The register_*probe functions will return -EINVAL if you attempt
+to install a probe in the code that implements Kprobes (mostly
+kernel/kprobes.c and arch/*/kernel/kprobes.c, but also functions such
+as do_page_fault and notifier_call_chain).
 
 If you install a probe in an inline-able function, Kprobes makes
 no attempt to chase down all inline instances of the function and
@@ -290,18 +293,14 @@ from the accidental ones.  Don't drink and probe.
 
 Kprobes makes no attempt to prevent probe handlers from stepping on
 each other -- e.g., probing printk() and then calling printk() from a
-probe handler.  As of Linux v2.6.12, if a probe handler hits a probe,
-that second probe's handlers won't be run in that instance.
-
-In Linux v2.6.12 and previous versions, Kprobes' data structures are
-protected by a single lock that is held during probe registration and
-unregistration and while handlers are run.  Thus, no two handlers
-can run simultaneously.  To improve scalability on SMP systems,
-this restriction will probably be removed soon, in which case
-multiple handlers (or multiple instances of the same handler) may
-run concurrently on different CPUs.  Code your handlers accordingly.
-
-Kprobes does not use semaphores or allocate memory except during
+probe handler.  If a probe handler hits a probe, that second probe's
+handlers won't be run in that instance, and the kprobe.nmissed member
+of the second probe will be incremented.
+
+As of Linux v2.6.15-rc1, multiple handlers (or multiple instances of
+the same handler) may run concurrently on different CPUs.
+
+Kprobes does not use mutexes or allocate memory except during
 registration and unregistration.
 
 Probe handlers are run with preemption disabled.  Depending on the
@@ -316,11 +315,18 @@ address instead of the real return address for kretprobed functions.
 (As far as we can tell, __builtin_return_address() is used only
 for instrumentation and error reporting.)
 
-If the number of times a function is called does not match the
-number of times it returns, registering a return probe on that
-function may produce undesirable results.  We have the do_exit()
-and do_execve() cases covered.  do_fork() is not an issue.  We're
-unaware of other specific cases where this could be a problem.
+If the number of times a function is called does not match the number
+of times it returns, registering a return probe on that function may
+produce undesirable results.  We have the do_exit() case covered.
+do_execve() and do_fork() are not an issue.  We're unaware of other
+specific cases where this could be a problem.
+
+If, upon entry to or exit from a function, the CPU is running on
+a stack other than that of the current task, registering a return
+probe on that function may produce undesirable results.  For this
+reason, Kprobes doesn't support return probes (or kprobes or jprobes)
+on the x86_64 version of __switch_to(); the registration functions
+return -EINVAL.
 
 6. Probe Overhead
 
@@ -347,14 +353,12 @@ k = 0.77 usec; j = 1.31; r = 1.26; kr = 1.45; jr = 1.99
 
 7. TODO
 
-a. SystemTap (http://sourceware.org/systemtap): Work in progress
-to provide a simplified programming interface for probe-based
-instrumentation.
-b. Improved SMP scalability: Currently, work is in progress to handle
-multiple kprobes in parallel.
-c. Kernel return probes for sparc64.
-d. Support for other architectures.
-e. User-space probes.
+a. SystemTap (http://sourceware.org/systemtap): Provides a simplified
+programming interface for probe-based instrumentation.  Try it out.
+b. Kernel return probes for sparc64.
+c. Support for other architectures.
+d. User-space probes.
+e. Watchpoint probes (which fire on data references).
 
 8. Kprobes Example
 
@@ -411,8 +415,7 @@ int init_module(void)
                 printk("Couldn't find %s to plant kprobe\n", "do_fork");
                 return -1;
         }
-        ret = register_kprobe(&kp);
-        if (ret < 0) {
+        if ((ret = register_kprobe(&kp) < 0)) {
                 printk("register_kprobe failed, returned %d\n", ret);
                 return -1;
         }
diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
index a7e4c4ea3560..afb31c141d9d 100644
--- a/Documentation/mips/AU1xxx_IDE.README
+++ b/Documentation/mips/AU1xxx_IDE.README
@@ -95,11 +95,13 @@ CONFIG_BLK_DEV_IDEDMA_PCI=y
 CONFIG_IDEDMA_PCI_AUTO=y
 CONFIG_BLK_DEV_IDE_AU1XXX=y
 CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
-CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON=y
 CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ=128
 CONFIG_BLK_DEV_IDEDMA=y
 CONFIG_IDEDMA_AUTO=y
 
+Also define 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to enable
+the burst support on DBDMA controller.
+
 If the used system need the USB support enable the following kernel configs for
 high IDE to USB throughput.
 
@@ -115,6 +117,8 @@ CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ=128
 CONFIG_BLK_DEV_IDEDMA=y
 CONFIG_IDEDMA_AUTO=y
 
+Also undefine 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to
+disable the burst support on DBDMA controller.
 
 ADD NEW HARD DISC TO WHITE OR BLACK LIST
 ----------------------------------------
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index 60a617aff8ba..e08383712370 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -25,6 +25,10 @@ config GENERIC_HARDIRQS
         bool
         default n
 
+config TIME_LOW_RES
+        bool
+        default y
+
 mainmenu "Fujitsu FR-V Kernel Configuration"
 
 source "init/Kconfig"
diff --git a/arch/frv/Makefile b/arch/frv/Makefile
index 90c0fb8d9dc3..d163747d17c0 100644
--- a/arch/frv/Makefile
+++ b/arch/frv/Makefile
@@ -81,7 +81,7 @@ endif
 # - reserve CC3 for use with atomic ops
 # - all the extra registers are dealt with only at context switch time
 CFLAGS          += -mno-fdpic -mgpr-32 -msoft-float -mno-media
-CFLAGS          += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15
+CFLAGS          += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2
 AFLAGS          += -mno-fdpic
 ASFLAGS         += -mno-fdpic
 
diff --git a/arch/frv/kernel/break.S b/arch/frv/kernel/break.S
index 33233dc23e29..687c48d62dde 100644
--- a/arch/frv/kernel/break.S
+++ b/arch/frv/kernel/break.S
@@ -200,12 +200,20 @@ __break_step:
         movsg           bpcsr,gr2
         sethi.p         %hi(__entry_kernel_external_interrupt),gr3
         setlo           %lo(__entry_kernel_external_interrupt),gr3
-        subcc           gr2,gr3,gr0,icc0
+        subcc.p         gr2,gr3,gr0,icc0
+        sethi           %hi(__entry_uspace_external_interrupt),gr3
+        setlo.p         %lo(__entry_uspace_external_interrupt),gr3
         beq             icc0,#2,__break_step_kernel_external_interrupt
-        sethi.p         %hi(__entry_uspace_external_interrupt),gr3
-        setlo           %lo(__entry_uspace_external_interrupt),gr3
-        subcc           gr2,gr3,gr0,icc0
+        subcc.p         gr2,gr3,gr0,icc0
+        sethi           %hi(__entry_kernel_external_interrupt_virtually_disabled),gr3
+        setlo.p         %lo(__entry_kernel_external_interrupt_virtually_disabled),gr3
         beq             icc0,#2,__break_step_uspace_external_interrupt
+        subcc.p         gr2,gr3,gr0,icc0
+        sethi           %hi(__entry_kernel_external_interrupt_virtual_reenable),gr3
+        setlo.p         %lo(__entry_kernel_external_interrupt_virtual_reenable),gr3
+        beq             icc0,#2,__break_step_kernel_external_interrupt_virtually_disabled
+        subcc           gr2,gr3,gr0,icc0
+        beq             icc0,#2,__break_step_kernel_external_interrupt_virtual_reenable
 
         LEDS            0x2007,gr2
 
@@ -254,6 +262,9 @@ __break_step_kernel_softprog_interrupt:
 # step through an external interrupt from kernel mode
         .globl          __break_step_kernel_external_interrupt
 __break_step_kernel_external_interrupt:
+        # deal with virtual interrupt disablement
+        beq             icc2,#0,__break_step_kernel_external_interrupt_virtually_disabled
+
         sethi.p         %hi(__entry_kernel_external_interrupt_reentry),gr3
         setlo           %lo(__entry_kernel_external_interrupt_reentry),gr3
 
@@ -294,6 +305,64 @@ __break_return_as_kernel_prologue:
 #endif
         rett            #1
 
+# we single-stepped into an interrupt handler whilst interrupts were merely virtually disabled
+# need to really disable interrupts, set flag, fix up and return
+__break_step_kernel_external_interrupt_virtually_disabled:
+        movsg           psr,gr2
+        andi            gr2,#~PSR_PIL,gr2
+        ori             gr2,#PSR_PIL_14,gr2     /* debugging interrupts only */
+        movgs           gr2,psr
+
+        ldi             @(gr31,#REG_CCR),gr3
+        movgs           gr3,ccr
+        subcc.p         gr0,gr0,gr0,icc2        /* leave Z set, clear C */
+
+        # exceptions must've been enabled and we must've been in supervisor mode
+        setlos          BPSR_BET|BPSR_BS,gr3
+        movgs           gr3,bpsr
+
+        # return to where the interrupt happened
+        movsg           pcsr,gr2
+        movgs           gr2,bpcsr
+
+        lddi.p          @(gr31,#REG_GR(2)),gr2
+
+        xor             gr31,gr31,gr31
+        movgs           gr0,brr
+#ifdef CONFIG_MMU
+        movsg           scr3,gr31
+#endif
+        rett            #1
+
+# we stepped through into the virtual interrupt reenablement trap
+#
+# we also want to single step anyway, but after fixing up so that we get an event on the
+# instruction after the broken-into exception returns
+        .globl          __break_step_kernel_external_interrupt_virtual_reenable
+__break_step_kernel_external_interrupt_virtual_reenable:
+        movsg           psr,gr2
+        andi            gr2,#~PSR_PIL,gr2
+        movgs           gr2,psr
+
+        ldi             @(gr31,#REG_CCR),gr3
+        movgs           gr3,ccr
+        subicc          gr0,#1,gr0,icc2         /* clear Z, set C */
+
+        # save the adjusted ICC2
+        movsg           ccr,gr3
+        sti             gr3,@(gr31,#REG_CCR)
+
+        # exceptions must've been enabled and we must've been in supervisor mode
+        setlos          BPSR_BET|BPSR_BS,gr3
+        movgs           gr3,bpsr
+
+        # return to where the trap happened
+        movsg           pcsr,gr2
+        movgs           gr2,bpcsr
+
+        # and then process the single step
+        bra             __break_continue
+
 # step through an internal exception from uspace mode
         .globl          __break_step_uspace_softprog_interrupt
 __break_step_uspace_softprog_interrupt:
diff --git a/arch/frv/kernel/entry-table.S b/arch/frv/kernel/entry-table.S
index 9b9243e2103c..81568acea9cd 100644
--- a/arch/frv/kernel/entry-table.S
+++ b/arch/frv/kernel/entry-table.S
@@ -116,6 +116,8 @@ __break_kerneltrap_fixup_table:
         .long           __break_step_uspace_external_interrupt
         .section .trap.kernel
         .org            \tbr_tt
+        # deal with virtual interrupt disablement
+        beq             icc2,#0,__entry_kernel_external_interrupt_virtually_disabled
         bra             __entry_kernel_external_interrupt
         .section .trap.fixup.kernel
         .org            \tbr_tt >> 2
@@ -259,25 +261,52 @@ __trap_fixup_kernel_data_tlb_miss:
         .org            TBR_TT_TRAP0
         .rept           127
         bra             __entry_uspace_softprog_interrupt
-        bra             __break_step_uspace_softprog_interrupt
-        .long           0,0
+        .long           0,0,0
         .endr
         .org            TBR_TT_BREAK
         bra             __entry_break
         .long           0,0,0
 
+        .section        .trap.fixup.user
+        .org            TBR_TT_TRAP0 >> 2
+        .rept           127
+        .long           __break_step_uspace_softprog_interrupt
+        .endr
+        .org            TBR_TT_BREAK >> 2
+        .long           0
+
         # miscellaneous kernel mode entry points
         .section        .trap.kernel
         .org            TBR_TT_TRAP0
-        .rept           127
         bra             __entry_kernel_softprog_interrupt
-        bra             __break_step_kernel_softprog_interrupt
-        .long           0,0
+        .org            TBR_TT_TRAP1
+        bra             __entry_kernel_softprog_interrupt
+
+        # trap #2 in kernel - reenable interrupts
+        .org            TBR_TT_TRAP2
+        bra             __entry_kernel_external_interrupt_virtual_reenable
+
+        # miscellaneous kernel traps
+        .org            TBR_TT_TRAP3
+        .rept           124
+        bra             __entry_kernel_softprog_interrupt
+        .long           0,0,0
         .endr
         .org            TBR_TT_BREAK
         bra             __entry_break
         .long           0,0,0
 
+        .section        .trap.fixup.kernel
+        .org            TBR_TT_TRAP0 >> 2
+        .long           __break_step_kernel_softprog_interrupt
+        .long           __break_step_kernel_softprog_interrupt
+        .long           __break_step_kernel_external_interrupt_virtual_reenable
+        .rept           124
+        .long           __break_step_kernel_softprog_interrupt
+        .endr
+        .org            TBR_TT_BREAK >> 2
+        .long           0
+
         # miscellaneous debug mode entry points
         .section        .trap.break
         .org            TBR_TT_BREAK
diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S
index 5f6548388b74..1d21c8d34d8a 100644
--- a/arch/frv/kernel/entry.S
+++ b/arch/frv/kernel/entry.S
@@ -141,7 +141,10 @@ __entry_uspace_external_interrupt_reentry:
 
         movsg           gner0,gr4
         movsg           gner1,gr5
-        stdi            gr4,@(gr28,#REG_GNER0)
+        stdi.p          gr4,@(gr28,#REG_GNER0)
+
+        # interrupts start off fully disabled in the interrupt handler
+        subcc           gr0,gr0,gr0,icc2                /* set Z and clear C */
 
         # set up kernel global registers
         sethi.p         %hi(__kernel_current_task),gr5
@@ -193,9 +196,8 @@ __entry_uspace_external_interrupt_reentry:
         .type           __entry_kernel_external_interrupt,@function
 __entry_kernel_external_interrupt:
         LEDS            0x6210
-
-        sub             sp,gr15,gr31
-        LEDS32
+//      sub             sp,gr15,gr31
+//      LEDS32
 
         # set up the stack pointer
         or.p            sp,gr0,gr30
@@ -231,7 +233,10 @@ __entry_kernel_external_interrupt_reentry:
         stdi            gr24,@(gr28,#REG_GR(24))
         stdi            gr26,@(gr28,#REG_GR(26))
         sti             gr29,@(gr28,#REG_GR(29))
-        stdi            gr30,@(gr28,#REG_GR(30))
+        stdi.p          gr30,@(gr28,#REG_GR(30))
+
+        # note virtual interrupts will be fully enabled upon return
+        subicc          gr0,#1,gr0,icc2                 /* clear Z, set C */
 
         movsg           tbr ,gr20
         movsg           psr ,gr22
@@ -267,7 +272,10 @@ __entry_kernel_external_interrupt_reentry:
 
         movsg           gner0,gr4
         movsg           gner1,gr5
-        stdi            gr4,@(gr28,#REG_GNER0)
+        stdi.p          gr4,@(gr28,#REG_GNER0)
+
+        # interrupts start off fully disabled in the interrupt handler
+        subcc           gr0,gr0,gr0,icc2                        /* set Z and clear C */
 
         # set the return address
         sethi.p         %hi(__entry_return_from_kernel_interrupt),gr4
@@ -291,6 +299,45 @@ __entry_kernel_external_interrupt_reentry:
 
         .size           __entry_kernel_external_interrupt,.-__entry_kernel_external_interrupt
 
+###############################################################################
+#
+# deal with interrupts that were actually virtually disabled
+# - we need to really disable them, flag the fact and return immediately
+# - if you change this, you must alter break.S also
+#
+###############################################################################
+        .balign         L1_CACHE_BYTES
+        .globl          __entry_kernel_external_interrupt_virtually_disabled
+        .type           __entry_kernel_external_interrupt_virtually_disabled,@function
+__entry_kernel_external_interrupt_virtually_disabled:
+        movsg           psr,gr30
+        andi            gr30,#~PSR_PIL,gr30
+        ori             gr30,#PSR_PIL_14,gr30           ; debugging interrupts only
+        movgs           gr30,psr
+        subcc           gr0,gr0,gr0,icc2                ; leave Z set, clear C
+        rett            #0
+
+        .size           __entry_kernel_external_interrupt_virtually_disabled,.-__entry_kernel_external_interrupt_virtually_disabled
+
+###############################################################################
+#
+# deal with re-enablement of interrupts that were pending when virtually re-enabled
+# - set ICC2.C, re-enable the real interrupts and return
+# - we can clear ICC2.Z because we shouldn't be here if it's not 0 [due to TIHI]
+# - if you change this, you must alter break.S also
+#
+###############################################################################
+        .balign         L1_CACHE_BYTES
+        .globl          __entry_kernel_external_interrupt_virtual_reenable
+        .type           __entry_kernel_external_interrupt_virtual_reenable,@function
+__entry_kernel_external_interrupt_virtual_reenable:
+        movsg           psr,gr30
+        andi            gr30,#~PSR_PIL,gr30             ; re-enable interrupts
+        movgs           gr30,psr
+        subicc          gr0,#1,gr0,icc2                 ; clear Z, set C
+        rett            #0
+
+        .size           __entry_kernel_external_interrupt_virtual_reenable,.-__entry_kernel_external_interrupt_virtual_reenable
 
 ###############################################################################
 #
@@ -335,6 +382,7 @@ __entry_uspace_softprog_interrupt_reentry:
 
         sethi.p         %hi(__entry_return_from_user_exception),gr23
         setlo           %lo(__entry_return_from_user_exception),gr23
+
         bra             __entry_common
 
         .size           __entry_uspace_softprog_interrupt,.-__entry_uspace_softprog_interrupt
@@ -495,7 +543,10 @@ __entry_common:
 
         movsg           gner0,gr4
         movsg           gner1,gr5
-        stdi            gr4,@(gr28,#REG_GNER0)
+        stdi.p          gr4,@(gr28,#REG_GNER0)
+
+        # set up virtual interrupt disablement
+        subicc          gr0,#1,gr0,icc2                 /* clear Z flag, set C flag */
 
         # set up kernel global registers
         sethi.p         %hi(__kernel_current_task),gr5
@@ -1418,11 +1469,27 @@ sys_call_table:
         .long sys_add_key
         .long sys_request_key
         .long sys_keyctl
-        .long sys_ni_syscall // sys_vperfctr_open
-        .long sys_ni_syscall // sys_vperfctr_control    /* 290 */
-        .long sys_ni_syscall // sys_vperfctr_unlink
-        .long sys_ni_syscall // sys_vperfctr_iresume
-        .long sys_ni_syscall // sys_vperfctr_read
+        .long sys_ioprio_set
+        .long sys_ioprio_get            /* 290 */
+        .long sys_inotify_init
+        .long sys_inotify_add_watch
+        .long sys_inotify_rm_watch
+        .long sys_migrate_pages
+        .long sys_openat                /* 295 */
+        .long sys_mkdirat
+        .long sys_mknodat
+        .long sys_fchownat
+        .long sys_futimesat
+        .long sys_newfstatat            /* 300 */
+        .long sys_unlinkat
+        .long sys_renameat
+        .long sys_linkat
+        .long sys_symlinkat
+        .long sys_readlinkat            /* 305 */
+        .long sys_fchmodat
+        .long sys_faccessat
+        .long sys_pselect6
+        .long sys_ppoll
 
 
 syscall_table_size = (. - sys_call_table)
diff --git a/arch/frv/kernel/head.S b/arch/frv/kernel/head.S
index c73b4fe9f6ca..29a5265489b7 100644
--- a/arch/frv/kernel/head.S
+++ b/arch/frv/kernel/head.S
@@ -513,6 +513,9 @@ __head_mmu_enabled:
         movgs           gr0,ccr
         movgs           gr0,cccr
 
+        # initialise the virtual interrupt handling
+        subcc           gr0,gr0,gr0,icc2                /* set Z, clear C */
+
 #ifdef CONFIG_MMU
         movgs           gr3,scr2
         movgs           gr3,scr3
diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c
index 59580c59c62c..27ab4c30aac6 100644
--- a/arch/frv/kernel/irq.c
+++ b/arch/frv/kernel/irq.c
@@ -287,18 +287,11 @@ asmlinkage void do_IRQ(void)
         struct irq_source *source;
         int level, cpu;
 
+        irq_enter();
+
         level = (__frame->tbr >> 4) & 0xf;
         cpu = smp_processor_id();
 
-#if 0
-        {
-                static u32 irqcount;
-                *(volatile u32 *) 0xe1200004 = ~((irqcount++ << 8) | level);
-                *(volatile u16 *) 0xffc00100 = (u16) ~0x9999;
-                mb();
-        }
-#endif
-
         if ((unsigned long) __frame - (unsigned long) (current + 1) < 512)
                 BUG();
 
@@ -308,40 +301,12 @@ asmlinkage void do_IRQ(void)
 
         kstat_this_cpu.irqs[level]++;
 
-        irq_enter();
-
         for (source = frv_irq_levels[level].sources; source; source = source->next)
                 source->doirq(source);
 
-        irq_exit();
-
         __clr_MASK(level);
 
-        /* only process softirqs if we didn't interrupt another interrupt handler */
-        if ((__frame->psr & PSR_PIL) == PSR_PIL_0)
-                if (local_softirq_pending())
-                        do_softirq();
-
-#ifdef CONFIG_PREEMPT
-        local_irq_disable();
-        while (--current->preempt_count == 0) {
-                if (!(__frame->psr & PSR_S) ||
-                    current->need_resched == 0 ||
-                    in_interrupt())
-                        break;
-                current->preempt_count++;
-                local_irq_enable();
-                preempt_schedule();
-                local_irq_disable();
-        }
-#endif
-
-#if 0
-        {
-                *(volatile u16 *) 0xffc00100 = (u16) ~0x6666;
-                mb();
-        }
-#endif
+        irq_exit();
 
 } /* end do_IRQ() */
 
diff --git a/arch/frv/mm/kmap.c b/arch/frv/mm/kmap.c
index 539f45e6d15e..c54f18e65ea6 100644
--- a/arch/frv/mm/kmap.c
+++ b/arch/frv/mm/kmap.c
@@ -44,15 +44,6 @@ void iounmap(void *addr)
 }
 
 /*
- * __iounmap unmaps nearly everything, so be careful
- * it doesn't free currently pointer/page tables anymore but it
- * wans't used anyway and might be added later.
- */
-void __iounmap(void *addr, unsigned long size)
-{
-}
-
-/*
  * Set new cache mode for some kernel address space.
  * The caller must push data for that range itself, if such data may already
  * be in the cache.
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 80940d712acf..98308b018a35 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -33,6 +33,10 @@ config GENERIC_CALIBRATE_DELAY
         bool
         default y
 
+config TIME_LOW_RES
+        bool
+        default y
+
 config ISA
         bool
         default y
diff --git a/arch/h8300/Kconfig.cpu b/arch/h8300/Kconfig.cpu
index a380167a13cf..582797db9603 100644
--- a/arch/h8300/Kconfig.cpu
+++ b/arch/h8300/Kconfig.cpu
@@ -169,7 +169,7 @@ endif
 
 config CPU_H8300H
         bool
-        depends on (H8002 || H83007 || H83048 || H83068)
+        depends on (H83002 || H83007 || H83048 || H83068)
         default y
 
 config CPU_H8S
diff --git a/arch/i386/boot/.gitignore b/arch/i386/boot/.gitignore
new file mode 100644
index 000000000000..495f20c085de
--- /dev/null
+++ b/arch/i386/boot/.gitignore
@@ -0,0 +1,3 @@
+bootsect
+bzImage
+setup
diff --git a/arch/i386/boot/tools/.gitignore b/arch/i386/boot/tools/.gitignore
new file mode 100644
index 000000000000..378eac25d311
--- /dev/null
+++ b/arch/i386/boot/tools/.gitignore
@@ -0,0 +1 @@
+build
diff --git a/arch/i386/kernel/.gitignore b/arch/i386/kernel/.gitignore
new file mode 100644
index 000000000000..40836ad9079c
--- /dev/null
+++ b/arch/i386/kernel/.gitignore
@@ -0,0 +1 @@
+vsyscall.lds
diff --git a/arch/i386/kernel/vsyscall-sysenter.S b/arch/i386/kernel/vsyscall-sysenter.S
index 4daefb2ec1b2..76b728159403 100644
--- a/arch/i386/kernel/vsyscall-sysenter.S
+++ b/arch/i386/kernel/vsyscall-sysenter.S
@@ -7,6 +7,21 @@
  *    for details.
  */
 
+/*
+ * The caller puts arg2 in %ecx, which gets pushed. The kernel will use
+ * %ecx itself for arg2. The pushing is because the sysexit instruction
+ * (found in entry.S) requires that we clobber %ecx with the desired %esp.
+ * User code might expect that %ecx is unclobbered though, as it would be
+ * for returning via the iret instruction, so we must push and pop.
+ *
+ * The caller puts arg3 in %edx, which the sysexit instruction requires
+ * for %eip. Thus, exactly as for arg2, we must push and pop.
+ *
+ * Arg6 is different. The caller puts arg6 in %ebp. Since the sysenter
+ * instruction clobbers %esp, the user's %esp won't even survive entry
+ * into the kernel. We store %esp in %ebp. Code in entry.S must fetch
+ * arg6 from the stack.
+ */
         .text
         .globl __kernel_vsyscall
         .type __kernel_vsyscall,@function
diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index e72de580ebbf..bbcfd08378a6 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -10,23 +10,8 @@
 
 #include <linux/string.h>
 EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(memchr);
-EXPORT_SYMBOL(memcmp);
 EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(memscan);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strcpy);
 EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strncmp);
-EXPORT_SYMBOL(strncpy);
-EXPORT_SYMBOL(strnlen);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strstr);
-EXPORT_SYMBOL(strpbrk);
 
 #include <asm/checksum.h>
 EXPORT_SYMBOL(ip_fast_csum);            /* hand-coded assembly */
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index a094ec49ccfa..307d01e15b2e 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -250,32 +250,27 @@ time_init (void)
         set_normalized_timespec(&wall_to_monotonic, -xtime.tv_sec, -xtime.tv_nsec);
 }
 
-#define SMALLUSECS 100
-
-void
-udelay (unsigned long usecs)
+/*
+ * Generic udelay assumes that if preemption is allowed and the thread
+ * migrates to another CPU, that the ITC values are synchronized across
+ * all CPUs.
+ */
+static void
+ia64_itc_udelay (unsigned long usecs)
 {
-        unsigned long start;
-        unsigned long cycles;
-        unsigned long smallusecs;
+        unsigned long start = ia64_get_itc();
+        unsigned long end = start + usecs*local_cpu_data->cyc_per_usec;
 
-        /*
-         * Execute the non-preemptible delay loop (because the ITC might
-         * not be synchronized between CPUS) in relatively short time
-         * chunks, allowing preemption between the chunks.
-         */
-        while (usecs > 0) {
-                smallusecs = (usecs > SMALLUSECS) ? SMALLUSECS : usecs;
-                preempt_disable();
-                cycles = smallusecs*local_cpu_data->cyc_per_usec;
-                start = ia64_get_itc();
+        while (time_before(ia64_get_itc(), end))
+                cpu_relax();
+}
 
-                while (ia64_get_itc() - start < cycles)
-                        cpu_relax();
+void (*ia64_udelay)(unsigned long usecs) = &ia64_itc_udelay;
 
-                preempt_enable();
-                usecs -= smallusecs;
-        }
+void
+udelay (unsigned long usecs)
+{
+        (*ia64_udelay)(usecs);
 }
 EXPORT_SYMBOL(udelay);
 
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index 55391901b013..dabd6c32641e 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>       /* for EXPORT_SYMBOL */
 #include <linux/hardirq.h>
 #include <linux/kprobes.h>
+#include <linux/delay.h>                /* for ssleep() */
 
 #include <asm/fpswa.h>
 #include <asm/ia32.h>
@@ -116,6 +117,13 @@ die (const char *str, struct pt_regs *regs, long err)
         bust_spinlocks(0);
         die.lock_owner = -1;
         spin_unlock_irq(&die.lock);
+
+        if (panic_on_oops) {
+                printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
+                ssleep(5);
+                panic("Fatal exception");
+        }
+
         do_exit(SIGSEGV);
 }
 
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 3437c2390429..3edef0d32f86 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -23,6 +23,10 @@
 #include "xtalk/hubdev.h"
 #include "xtalk/xwidgetdev.h"
 
+
+extern void sn_init_cpei_timer(void);
+extern void register_sn_procfs(void);
+
 static struct list_head sn_sysdata_list;
 
 /* sysdata list struct */
@@ -40,12 +44,12 @@ struct brick {
         struct slab_info slab_info[MAX_SLABS + 1];
 };
 
-int sn_ioif_inited = 0;         /* SN I/O infrastructure initialized? */
+int sn_ioif_inited;             /* SN I/O infrastructure initialized? */
 
 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];       /* indexed by asic type */
 
-static int max_segment_number = 0; /* Default highest segment number */
-static int max_pcibus_number = 255; /* Default highest pci bus number */
+static int max_segment_number;           /* Default highest segment number */
+static int max_pcibus_number = 255;     /* Default highest pci bus number */
 
 /*
  * Hooks and struct for unsupported pci providers
@@ -84,7 +88,6 @@ static inline u64
 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
                              u64 address)
 {
-
         struct ia64_sal_retval ret_stuff;
         ret_stuff.status = 0;
         ret_stuff.v0 = 0;
@@ -94,7 +97,6 @@ sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
                         (u64) nasid, (u64) widget_num,
                         (u64) device_num, (u64) address, 0, 0, 0);
         return ret_stuff.status;
-
 }
 
 /*
@@ -102,7 +104,6 @@ sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
  */
 static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
 {
-
         struct ia64_sal_retval ret_stuff;
         ret_stuff.status = 0;
         ret_stuff.v0 = 0;
@@ -118,7 +119,6 @@ static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
  */
 static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
 {
-
         struct ia64_sal_retval ret_stuff;
         ret_stuff.status = 0;
         ret_stuff.v0 = 0;
@@ -215,7 +215,7 @@ static void __init sn_fixup_ionodes(void)
         struct hubdev_info *hubdev;
         u64 status;
         u64 nasid;
-        int i, widget, device;
+        int i, widget, device, size;
 
         /*
          * Get SGI Specific HUB chipset information.
@@ -251,48 +251,37 @@ static void __init sn_fixup_ionodes(void)
                 if (!hubdev->hdi_flush_nasid_list.widget_p)
                         continue;
 
+                size = (HUB_WIDGET_ID_MAX + 1) *
+                        sizeof(struct sn_flush_device_kernel *);
                 hubdev->hdi_flush_nasid_list.widget_p =
-                    kmalloc((HUB_WIDGET_ID_MAX + 1) *
-                            sizeof(struct sn_flush_device_kernel *),
-                            GFP_KERNEL);
-                memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
-                       (HUB_WIDGET_ID_MAX + 1) *
-                       sizeof(struct sn_flush_device_kernel *));
+                        kzalloc(size, GFP_KERNEL);
+                if (!hubdev->hdi_flush_nasid_list.widget_p)
+                        BUG();
 
                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
-                        sn_flush_device_kernel = kmalloc(DEV_PER_WIDGET *
-                                                         sizeof(struct
-                                                        sn_flush_device_kernel),
-                                                        GFP_KERNEL);
+                        size = DEV_PER_WIDGET *
+                                sizeof(struct sn_flush_device_kernel);
+                        sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
                         if (!sn_flush_device_kernel)
                                 BUG();
-                        memset(sn_flush_device_kernel, 0x0,
-                               DEV_PER_WIDGET *
-                               sizeof(struct sn_flush_device_kernel));
 
                         dev_entry = sn_flush_device_kernel;
                         for (device = 0; device < DEV_PER_WIDGET;
                              device++,dev_entry++) {
-                                dev_entry->common = kmalloc(sizeof(struct
-                                                        sn_flush_device_common),
-                                                            GFP_KERNEL);
+                                size = sizeof(struct sn_flush_device_common);
+                                dev_entry->common = kzalloc(size, GFP_KERNEL);
                                 if (!dev_entry->common)
                                         BUG();
-                                memset(dev_entry->common, 0x0, sizeof(struct
-                                                       sn_flush_device_common));
 
                                 if (sn_prom_feature_available(
                                                        PRF_DEVICE_FLUSH_LIST))
                                         status = sal_get_device_dmaflush_list(
-                                                                          nasid,
-                                                                         widget,
-                                                                         device,
-                                                      (u64)(dev_entry->common));
+                                                     nasid, widget, device,
+                                                     (u64)(dev_entry->common));
                                 else
                                         status = sn_device_fixup_war(nasid,
-                                                                     widget,
-                                                                     device,
-                                                             dev_entry->common);
+                                                     widget, device,
+                                                     dev_entry->common);
                                 if (status != SALRET_OK)
                                         panic("SAL call failed: %s\n",
                                               ia64_sal_strerror(status));
@@ -383,13 +372,12 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
 
         pci_dev_get(dev); /* for the sysdata pointer */
         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
-        if (pcidev_info <= 0)
+        if (!pcidev_info)
                 BUG();          /* Cannot afford to run out of memory */
 
-        sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
-        if (sn_irq_info <= 0)
+        sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
+        if (!sn_irq_info)
                 BUG();          /* Cannot afford to run out of memory */
-        memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
 
         /* Call to retrieve pci device information needed by kernel. */
         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number, 
@@ -482,13 +470,13 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
  */
 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
 {
-        int status = 0;
+        int status;
         int nasid, cnode;
         struct pci_controller *controller;
         struct sn_pci_controller *sn_controller;
         struct pcibus_bussoft *prom_bussoft_ptr;
         struct hubdev_info *hubdev_info;
-        void *provider_soft = NULL;
+        void *provider_soft;
         struct sn_pcibus_provider *provider;
 
         status = sal_get_pcibus_info((u64) segment, (u64) busnum,
@@ -535,6 +523,8 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
         bus->sysdata = controller;
         if (provider->bus_fixup)
                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
+        else
+                provider_soft = NULL;
 
         if (provider_soft == NULL) {
                 /* fixup failed or not applicable */
@@ -638,13 +628,8 @@ void sn_bus_free_sysdata(void)
 
 static int __init sn_pci_init(void)
 {
-        int i = 0;
-        int j = 0;
+        int i, j;
         struct pci_dev *pci_dev = NULL;
-        extern void sn_init_cpei_timer(void);
-#ifdef CONFIG_PROC_FS
-        extern void register_sn_procfs(void);
-#endif
 
         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
                 return 0;
@@ -700,32 +685,29 @@ static int __init sn_pci_init(void)
  */
 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
 {
-
         struct hubdev_info *hubdev_info;
+        int size;
+        pg_data_t *pg;
+
+        size = sizeof(struct hubdev_info);
 
         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
-                hubdev_info =
-                    (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
-                                                             sizeof(struct
-                                                                    hubdev_info));
+                pg = NODE_DATA(0);
         else
-                hubdev_info =
-                    (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
-                                                             sizeof(struct
-                                                                    hubdev_info));
-        npda->pdinfo = (void *)hubdev_info;
+                pg = NODE_DATA(node);
 
+        hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
+
+        npda->pdinfo = (void *)hubdev_info;
 }
 
 geoid_t
 cnodeid_get_geoid(cnodeid_t cnode)
 {
-
         struct hubdev_info *hubdev;
 
         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
         return hubdev->hdi_geoid;
-
 }
 
 subsys_initcall(sn_pci_init);
@@ -734,3 +716,4 @@ EXPORT_SYMBOL(sn_pci_unfixup_slot);
 EXPORT_SYMBOL(sn_pci_controller_fixup);
 EXPORT_SYMBOL(sn_bus_store_sysdata);
 EXPORT_SYMBOL(sn_bus_free_sysdata);
+EXPORT_SYMBOL(sn_pcidev_info_get);
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 48645ac120fc..5b84836c2171 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -75,7 +75,7 @@ EXPORT_SYMBOL(sn_rtc_cycles_per_second);
 DEFINE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
 EXPORT_PER_CPU_SYMBOL(__sn_hub_info);
 
-DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
+DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_COMPACT_NODES]);
 EXPORT_PER_CPU_SYMBOL(__sn_cnodeid_to_nasid);
 
 DEFINE_PER_CPU(struct nodepda_s *, __sn_nodepda);
@@ -317,6 +317,7 @@ struct pcdp_vga_device {
 #define PCDP_PCI_TRANS_IOPORT   0x02
 #define PCDP_PCI_TRANS_MMIO     0x01
 
+#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
 static void
 sn_scan_pcdp(void)
 {
@@ -358,6 +359,7 @@ sn_scan_pcdp(void)
                 break; /* once we find the primary, we're done */
         }
 }
+#endif
 
 static unsigned long sn2_rtc_initial;
 
diff --git a/arch/ia64/sn/kernel/sn2/prominfo_proc.c b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
index 81c63b2f8ae9..6ae276d5d50c 100644
--- a/arch/ia64/sn/kernel/sn2/prominfo_proc.c
+++ b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1999,2001-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (C) 1999,2001-2004, 2006 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * Module to export the system's Firmware Interface Tables, including
  * PROM revision numbers and banners, in /proc
@@ -190,7 +190,7 @@ static int
 read_version_entry(char *page, char **start, off_t off, int count, int *eof,
                    void *data)
 {
-        int len = 0;
+        int len;
 
         /* data holds the NASID of the node */
         len = dump_version(page, (unsigned long)data);
@@ -202,7 +202,7 @@ static int
 read_fit_entry(char *page, char **start, off_t off, int count, int *eof,
                void *data)
 {
-        int len = 0;
+        int len;
 
         /* data holds the NASID of the node */
         len = dump_fit(page, (unsigned long)data);
@@ -229,13 +229,16 @@ int __init prominfo_init(void)
         struct proc_dir_entry *p;
         cnodeid_t cnodeid;
         unsigned long nasid;
+        int size;
         char name[NODE_NAME_LEN];
 
         if (!ia64_platform_is("sn2"))
                 return 0;
 
-        proc_entries = kmalloc(num_online_nodes() * sizeof(struct proc_dir_entry *),
-                               GFP_KERNEL);
+        size = num_online_nodes() * sizeof(struct proc_dir_entry *);
+        proc_entries = kzalloc(size, GFP_KERNEL);
+        if (!proc_entries)
+                return -ENOMEM;
 
         sgi_prominfo_entry = proc_mkdir("sgi_prominfo", NULL);
 
@@ -244,14 +247,12 @@ int __init prominfo_init(void)
                 sprintf(name, "node%d", cnodeid);
                 *entp = proc_mkdir(name, sgi_prominfo_entry);
                 nasid = cnodeid_to_nasid(cnodeid);
-                p = create_proc_read_entry(
-                        "fit", 0, *entp, read_fit_entry,
-                        (void *)nasid);
+                p = create_proc_read_entry("fit", 0, *entp, read_fit_entry,
+                                           (void *)nasid);
                 if (p)
                         p->owner = THIS_MODULE;
-                p = create_proc_read_entry(
-                        "version", 0, *entp, read_version_entry,
-                        (void *)nasid);
+                p = create_proc_read_entry("version", 0, *entp,
+                                           read_version_entry, (void *)nasid);
                 if (p)
                         p->owner = THIS_MODULE;
                 entp++;
@@ -263,7 +264,7 @@ int __init prominfo_init(void)
 void __exit prominfo_exit(void)
 {
         struct proc_dir_entry **entp;
-        unsigned cnodeid;
+        unsigned int cnodeid;
         char name[NODE_NAME_LEN];
 
         entp = proc_entries;
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index f153a4c35c70..24eefb2fc55f 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -46,8 +46,14 @@ DECLARE_PER_CPU(struct ptc_stats, ptcstats);
 
 static  __cacheline_aligned DEFINE_SPINLOCK(sn2_global_ptc_lock);
 
-void sn2_ptc_deadlock_recovery(short *, short, short, int, volatile unsigned long *, unsigned long,
-        volatile unsigned long *, unsigned long);
+extern unsigned long
+sn2_ptc_deadlock_recovery_core(volatile unsigned long *, unsigned long,
+                               volatile unsigned long *, unsigned long,
+                               volatile unsigned long *, unsigned long);
+void
+sn2_ptc_deadlock_recovery(short *, short, short, int,
+                          volatile unsigned long *, unsigned long,
+                          volatile unsigned long *, unsigned long);
 
 /*
  * Note: some is the following is captured here to make degugging easier
@@ -59,16 +65,6 @@ void sn2_ptc_deadlock_recovery(short *, short, short, int, volatile unsigned lon
 #define reset_max_active_on_deadlock()  1
 #define PTC_LOCK(sh1)                   ((sh1) ? &sn2_global_ptc_lock : &sn_nodepda->ptc_lock)
 
-static inline void ptc_lock(int sh1, unsigned long *flagp)
-{
-        spin_lock_irqsave(PTC_LOCK(sh1), *flagp);
-}
-
-static inline void ptc_unlock(int sh1, unsigned long flags)
-{
-        spin_unlock_irqrestore(PTC_LOCK(sh1), flags);
-}
-
 struct ptc_stats {
         unsigned long ptc_l;
         unsigned long change_rid;
@@ -82,6 +78,8 @@ struct ptc_stats {
         unsigned long shub_ptc_flushes_not_my_mm;
 };
 
+#define sn2_ptctest     0
+
 static inline unsigned long wait_piowc(void)
 {
         volatile unsigned long *piows;
@@ -200,7 +198,7 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
         max_active = max_active_pio(shub1);
 
         itc = ia64_get_itc();
-        ptc_lock(shub1, &flags);
+        spin_lock_irqsave(PTC_LOCK(shub1), flags);
         itc2 = ia64_get_itc();
 
         __get_cpu_var(ptcstats).lock_itc_clocks += itc2 - itc;
@@ -258,7 +256,7 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
                 ia64_srlz_d();
         }
 
-        ptc_unlock(shub1, flags);
+        spin_unlock_irqrestore(PTC_LOCK(shub1), flags);
 
         preempt_enable();
 }
@@ -270,11 +268,12 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
  * TLB flush transaction.  The recovery sequence is somewhat tricky & is
  * coded in assembly language.
  */
-void sn2_ptc_deadlock_recovery(short *nasids, short ib, short ie, int mynasid, volatile unsigned long *ptc0, unsigned long data0,
-        volatile unsigned long *ptc1, unsigned long data1)
+
+void
+sn2_ptc_deadlock_recovery(short *nasids, short ib, short ie, int mynasid,
+                          volatile unsigned long *ptc0, unsigned long data0,
+                          volatile unsigned long *ptc1, unsigned long data1)
 {
-        extern unsigned long sn2_ptc_deadlock_recovery_core(volatile unsigned long *, unsigned long,
-                volatile unsigned long *, unsigned long, volatile unsigned long *, unsigned long);
         short nasid, i;
         unsigned long *piows, zeroval, n;
 
diff --git a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
index a06719d752a0..c686d9c12f7b 100644
--- a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
+++ b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
@@ -6,11 +6,11 @@
  * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
  */
 #include <linux/config.h>
-#include <asm/uaccess.h>
 
 #ifdef CONFIG_PROC_FS
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <asm/uaccess.h>
 #include <asm/sn/sn_sal.h>
 
 static int partition_id_show(struct seq_file *s, void *p)
@@ -90,10 +90,10 @@ static int coherence_id_open(struct inode *inode, struct file *file)
         return single_open(file, coherence_id_show, NULL);
 }
 
-static struct proc_dir_entry *sn_procfs_create_entry(
-        const char *name, struct proc_dir_entry *parent,
-        int (*openfunc)(struct inode *, struct file *),
-        int (*releasefunc)(struct inode *, struct file *))
+static struct proc_dir_entry
+*sn_procfs_create_entry(const char *name, struct proc_dir_entry *parent,
+                        int (*openfunc)(struct inode *, struct file *),
+                        int (*releasefunc)(struct inode *, struct file *))
 {
         struct proc_dir_entry *e = create_proc_entry(name, 0444, parent);
 
@@ -126,24 +126,24 @@ void register_sn_procfs(void)
                 return;
 
         sn_procfs_create_entry("partition_id", sgi_proc_dir,
-                partition_id_open, single_release);
+                               partition_id_open, single_release);
 
         sn_procfs_create_entry("system_serial_number", sgi_proc_dir,
-                system_serial_number_open, single_release);
+                               system_serial_number_open, single_release);
 
         sn_procfs_create_entry("licenseID", sgi_proc_dir, 
-                licenseID_open, single_release);
+                               licenseID_open, single_release);
 
         e = sn_procfs_create_entry("sn_force_interrupt", sgi_proc_dir, 
-                sn_force_interrupt_open, single_release);
+                                   sn_force_interrupt_open, single_release);
         if (e) 
                 e->proc_fops->write = sn_force_interrupt_write_proc;
 
         sn_procfs_create_entry("coherence_id", sgi_proc_dir, 
-                coherence_id_open, single_release);
+                               coherence_id_open, single_release);
         
         sn_procfs_create_entry("sn_topology", sgi_proc_dir,
-                sn_topology_open, sn_topology_release);
+                               sn_topology_open, sn_topology_release);
 }
 
 #endif /* CONFIG_PROC_FS */
diff --git a/arch/ia64/sn/kernel/sn2/timer.c b/arch/ia64/sn/kernel/sn2/timer.c
index deb9baf4d473..56a88b6df4b4 100644
--- a/arch/ia64/sn/kernel/sn2/timer.c
+++ b/arch/ia64/sn/kernel/sn2/timer.c
@@ -14,6 +14,7 @@
 
 #include <asm/hw_irq.h>
 #include <asm/system.h>
+#include <asm/timex.h>
 
 #include <asm/sn/leds.h>
 #include <asm/sn/shub_mmr.h>
@@ -28,9 +29,27 @@ static struct time_interpolator sn2_interpolator = {
         .source = TIME_SOURCE_MMIO64
 };
 
+/*
+ * sn udelay uses the RTC instead of the ITC because the ITC is not
+ * synchronized across all CPUs, and the thread may migrate to another CPU
+ * if preemption is enabled.
+ */
+static void
+ia64_sn_udelay (unsigned long usecs)
+{
+        unsigned long start = rtc_time();
+        unsigned long end = start +
+                        usecs * sn_rtc_cycles_per_second / 1000000;
+
+        while (time_before((unsigned long)rtc_time(), end))
+                cpu_relax();
+}
+
 void __init sn_timer_init(void)
 {
         sn2_interpolator.frequency = sn_rtc_cycles_per_second;
         sn2_interpolator.addr = RTC_COUNTER_ADDR;
         register_time_interpolator(&sn2_interpolator);
+
+        ia64_udelay = &ia64_sn_udelay;
 }
diff --git a/arch/ia64/sn/kernel/sn2/timer_interrupt.c b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
index adf5db2e2afe..fa7f69945917 100644
--- a/arch/ia64/sn/kernel/sn2/timer_interrupt.c
+++ b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
@@ -1,7 +1,7 @@
 /*
  *
  *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2005, 2006 Silicon Graphics, Inc.  All Rights Reserved.
  * 
  * This program is free software; you can redistribute it and/or modify it 
  * under the terms of version 2 of the GNU General Public License 
@@ -22,11 +22,6 @@
  * License along with this program; if not, write the Free Software 
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  * 
- * Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 
- * Mountain View, CA  94043, or:
- * 
- * http://www.sgi.com 
- * 
  * For further information regarding this notice, see: 
  * 
  * http://oss.sgi.com/projects/GenInfo/NoticeExplan
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index d263d3e8fbb9..8a56f8b5ffa2 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -284,12 +284,10 @@ struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq,
         if ((nasid & 1) == 0)
                 return NULL;
 
-        sn_irq_info = kmalloc(sn_irq_size, GFP_KERNEL);
+        sn_irq_info = kzalloc(sn_irq_size, GFP_KERNEL);
         if (sn_irq_info == NULL)
                 return NULL;
 
-        memset(sn_irq_info, 0x0, sn_irq_size);
-
         status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq,
                                   req_nasid, slice);
         if (status) {
diff --git a/arch/ia64/sn/kernel/xpc_channel.c b/arch/ia64/sn/kernel/xpc_channel.c
index 36e5437a0fb6..cdf6856ce089 100644
--- a/arch/ia64/sn/kernel/xpc_channel.c
+++ b/arch/ia64/sn/kernel/xpc_channel.c
@@ -738,7 +738,9 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
 
         /* make sure all activity has settled down first */
 
-        if (atomic_read(&ch->references) > 0) {
+        if (atomic_read(&ch->references) > 0 ||
+                        ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) &&
+                        !(ch->flags & XPC_C_DISCONNECTINGCALLOUT_MADE))) {
                 return;
         }
         DBUG_ON(atomic_read(&ch->kthreads_assigned) != 0);
@@ -775,7 +777,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
 
         /* both sides are disconnected now */
 
-        if (ch->flags & XPC_C_CONNECTCALLOUT) {
+        if (ch->flags & XPC_C_DISCONNECTINGCALLOUT_MADE) {
                 spin_unlock_irqrestore(&ch->lock, *irq_flags);
                 xpc_disconnect_callout(ch, xpcDisconnected);
                 spin_lock_irqsave(&ch->lock, *irq_flags);
@@ -1300,7 +1302,7 @@ xpc_process_msg_IPI(struct xpc_partition *part, int ch_number)
                                 "delivered=%d, partid=%d, channel=%d\n",
                                 nmsgs_sent, ch->partid, ch->number);
 
-                        if (ch->flags & XPC_C_CONNECTCALLOUT) {
+                        if (ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) {
                                 xpc_activate_kthreads(ch, nmsgs_sent);
                         }
                 }
diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index 9cd460dfe27e..8cbf16432570 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -750,12 +750,16 @@ xpc_daemonize_kthread(void *args)
                 /* let registerer know that connection has been established */
 
                 spin_lock_irqsave(&ch->lock, irq_flags);
-                if (!(ch->flags & XPC_C_CONNECTCALLOUT)) {
-                        ch->flags |= XPC_C_CONNECTCALLOUT;
+                if (!(ch->flags & XPC_C_CONNECTEDCALLOUT)) {
+                        ch->flags |= XPC_C_CONNECTEDCALLOUT;
                         spin_unlock_irqrestore(&ch->lock, irq_flags);
 
                         xpc_connected_callout(ch);
 
+                        spin_lock_irqsave(&ch->lock, irq_flags);
+                        ch->flags |= XPC_C_CONNECTEDCALLOUT_MADE;
+                        spin_unlock_irqrestore(&ch->lock, irq_flags);
+
                         /*
                          * It is possible that while the callout was being
                          * made that the remote partition sent some messages.
@@ -777,15 +781,17 @@ xpc_daemonize_kthread(void *args)
 
         if (atomic_dec_return(&ch->kthreads_assigned) == 0) {
                 spin_lock_irqsave(&ch->lock, irq_flags);
-                if ((ch->flags & XPC_C_CONNECTCALLOUT) &&
-                                !(ch->flags & XPC_C_DISCONNECTCALLOUT)) {
-                        ch->flags |= XPC_C_DISCONNECTCALLOUT;
+                if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) &&
+                                !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) {
+                        ch->flags |= XPC_C_DISCONNECTINGCALLOUT;
                         spin_unlock_irqrestore(&ch->lock, irq_flags);
 
                         xpc_disconnect_callout(ch, xpcDisconnecting);
-                } else {
-                        spin_unlock_irqrestore(&ch->lock, irq_flags);
+
+                        spin_lock_irqsave(&ch->lock, irq_flags);
+                        ch->flags |= XPC_C_DISCONNECTINGCALLOUT_MADE;
                 }
+                spin_unlock_irqrestore(&ch->lock, irq_flags);
                 if (atomic_dec_return(&part->nchannels_engaged) == 0) {
                         xpc_mark_partition_disengaged(part);
                         xpc_IPI_send_disengage(part);
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index 5a36292388eb..b4b84c269210 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -335,10 +335,10 @@ int sn_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size)
          */
 
         SAL_CALL(isrv, SN_SAL_IOIF_PCI_SAFE,
-                pci_domain_nr(bus), bus->number,
-                0, /* io */
-                0, /* read */
-                port, size, __pa(val));
+                 pci_domain_nr(bus), bus->number,
+                 0, /* io */
+                 0, /* read */
+                 port, size, __pa(val));
 
         if (isrv.status == 0)
                 return size;
@@ -381,10 +381,10 @@ int sn_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size)
          */
 
         SAL_CALL(isrv, SN_SAL_IOIF_PCI_SAFE,
-                pci_domain_nr(bus), bus->number,
-                0, /* io */
-                1, /* write */
-                port, size, __pa(&val));
+                 pci_domain_nr(bus), bus->number,
+                 0, /* io */
+                 1, /* write */
+                 port, size, __pa(&val));
 
         if (isrv.status == 0)
                 return size;
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_ate.c b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
index aa3fa5152a32..1f0253bfe0a0 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_ate.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2001-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2001-2006 Silicon Graphics, Inc. All rights reserved.
  */
 
 #include <linux/types.h>
@@ -12,7 +12,7 @@
 #include <asm/sn/pcibus_provider_defs.h>
 #include <asm/sn/pcidev.h>
 
-int pcibr_invalidate_ate = 0;   /* by default don't invalidate ATE on free */
+int pcibr_invalidate_ate;       /* by default don't invalidate ATE on free */
 
 /*
  * mark_ate: Mark the ate as either free or inuse.
@@ -20,14 +20,12 @@ int pcibr_invalidate_ate = 0;	/* by default don't invalidate ATE on free */
 static void mark_ate(struct ate_resource *ate_resource, int start, int number,
                      u64 value)
 {
-
         u64 *ate = ate_resource->ate;
         int index;
         int length = 0;
 
         for (index = start; length < number; index++, length++)
                 ate[index] = value;
-
 }
 
 /*
@@ -37,7 +35,6 @@ static void mark_ate(struct ate_resource *ate_resource, int start, int number,
 static int find_free_ate(struct ate_resource *ate_resource, int start,
                          int count)
 {
-
         u64 *ate = ate_resource->ate;
         int index;
         int start_free;
@@ -70,12 +67,10 @@ static int find_free_ate(struct ate_resource *ate_resource, int start,
 static inline void free_ate_resource(struct ate_resource *ate_resource,
                                      int start)
 {
-
         mark_ate(ate_resource, start, ate_resource->ate[start], 0);
         if ((ate_resource->lowest_free_index > start) ||
             (ate_resource->lowest_free_index < 0))
                 ate_resource->lowest_free_index = start;
-
 }
 
 /*
@@ -84,7 +79,6 @@ static inline void free_ate_resource(struct ate_resource *ate_resource,
 static inline int alloc_ate_resource(struct ate_resource *ate_resource,
                                      int ate_needed)
 {
-
         int start_index;
 
         /*
@@ -118,19 +112,12 @@ static inline int alloc_ate_resource(struct ate_resource *ate_resource,
  */
 int pcibr_ate_alloc(struct pcibus_info *pcibus_info, int count)
 {
-        int status = 0;
-        u64 flag;
+        int status;
+        unsigned long flags;
 
-        flag = pcibr_lock(pcibus_info);
+        spin_lock_irqsave(&pcibus_info->pbi_lock, flags);
         status = alloc_ate_resource(&pcibus_info->pbi_int_ate_resource, count);
-
-        if (status < 0) {
-                /* Failed to allocate */
-                pcibr_unlock(pcibus_info, flag);
-                return -1;
-        }
-
-        pcibr_unlock(pcibus_info, flag);
+        spin_unlock_irqrestore(&pcibus_info->pbi_lock, flags);
 
         return status;
 }
@@ -182,7 +169,7 @@ void pcibr_ate_free(struct pcibus_info *pcibus_info, int index)
                 ate_write(pcibus_info, index, count, (ate & ~PCI32_ATE_V));
         }
 
-        flags = pcibr_lock(pcibus_info);
+        spin_lock_irqsave(&pcibus_info->pbi_lock, flags);
         free_ate_resource(&pcibus_info->pbi_int_ate_resource, index);
-        pcibr_unlock(pcibus_info, flags);
+        spin_unlock_irqrestore(&pcibus_info->pbi_lock, flags);
 }
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index 54ce5b7ceed2..9f86bb6519aa 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -137,14 +137,12 @@ pcibr_dmatrans_direct64(struct pcidev_info * info, u64 paddr,
                 pci_addr |= PCI64_ATTR_VIRTUAL;
 
         return pci_addr;
-
 }
 
 static dma_addr_t
 pcibr_dmatrans_direct32(struct pcidev_info * info,
                         u64 paddr, size_t req_size, u64 flags)
 {
-
         struct pcidev_info *pcidev_info = info->pdi_host_pcidev_info;
         struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
             pdi_pcibus_info;
@@ -171,7 +169,6 @@ pcibr_dmatrans_direct32(struct pcidev_info * info,
         }
 
         return PCI32_DIRECT_BASE | offset;
-
 }
 
 /*
@@ -218,9 +215,8 @@ void sn_dma_flush(u64 addr)
         u64 flags;
         u64 itte;
         struct hubdev_info *hubinfo;
-        volatile struct sn_flush_device_kernel *p;
-        volatile struct sn_flush_device_common *common;
-
+        struct sn_flush_device_kernel *p;
+        struct sn_flush_device_common *common;
         struct sn_flush_nasid_entry *flush_nasid_list;
 
         if (!sn_ioif_inited)
@@ -310,8 +306,7 @@ void sn_dma_flush(u64 addr)
                                              (common->sfdl_slot - 1));
                 }
         } else {
-                spin_lock_irqsave((spinlock_t *)&p->sfdl_flush_lock,
-                                  flags);
+                spin_lock_irqsave(&p->sfdl_flush_lock, flags);
                 *common->sfdl_flush_addr = 0;
 
                 /* force an interrupt. */
@@ -322,8 +317,7 @@ void sn_dma_flush(u64 addr)
                         cpu_relax();
 
                 /* okay, everything is synched up. */
-                spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock,
-                                       flags);
+                spin_unlock_irqrestore(&p->sfdl_flush_lock, flags);
         }
         return;
 }
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
index 2fac27049bf6..98f716bd92f0 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -163,9 +163,12 @@ pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
         /* Setup the PMU ATE map */
         soft->pbi_int_ate_resource.lowest_free_index = 0;
         soft->pbi_int_ate_resource.ate =
-            kmalloc(soft->pbi_int_ate_size * sizeof(u64), GFP_KERNEL);
-        memset(soft->pbi_int_ate_resource.ate, 0,
-               (soft->pbi_int_ate_size * sizeof(u64)));
+            kzalloc(soft->pbi_int_ate_size * sizeof(u64), GFP_KERNEL);
+
+        if (!soft->pbi_int_ate_resource.ate) {
+                kfree(soft);
+                return NULL;
+        }
 
         if (prom_bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) {
                 /* TIO PCI Bridge: find nearest node with CPUs */
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 96b919828053..8849439e88dd 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -21,6 +21,10 @@ config GENERIC_CALIBRATE_DELAY
         bool
         default y
 
+config TIME_LOW_RES
+        bool
+        default y
+
 config ARCH_MAY_HAVE_PC_FDC
         bool
         depends on Q40 || (BROKEN && SUN3X)
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index e2a6e8648960..e50858dbc237 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -29,6 +29,10 @@ config GENERIC_CALIBRATE_DELAY
         bool
         default y
 
+config TIME_LOW_RES
+        bool
+        default y
+
 source "init/Kconfig"
 
 menu "Processor type and features"
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 6a57407df1bc..38c0f3360d51 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -94,7 +94,6 @@ endif
 # machines may also.  Since BFD is incredibly buggy with respect to
 # crossformat linking we rely on the elf2ecoff tool for format conversion.
 #
-cflags-y                        += -I $(TOPDIR)/include/asm/gcc
 cflags-y                        += -G 0 -mno-abicalls -fno-pic -pipe
 LDFLAGS_vmlinux                 += -G 0 -static -n -nostdlib
 MODFLAGS                        += -mlong-calls
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 5232fc752935..092679c2dca9 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -25,6 +25,7 @@
 #include <linux/a.out.h>
 #include <linux/init.h>
 #include <linux/completion.h>
+#include <linux/kallsyms.h>
 
 #include <asm/abi.h>
 #include <asm/bootinfo.h>
@@ -272,46 +273,19 @@ long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
 
 static struct mips_frame_info {
         void *func;
-        int omit_fp;    /* compiled without fno-omit-frame-pointer */
-        int frame_offset;
+        unsigned long func_size;
+        int frame_size;
         int pc_offset;
-} schedule_frame, mfinfo[] = {
-        { schedule, 0 },        /* must be first */
-        /* arch/mips/kernel/semaphore.c */
-        { __down, 1 },
-        { __down_interruptible, 1 },
-        /* kernel/sched.c */
-#ifdef CONFIG_PREEMPT
-        { preempt_schedule, 0 },
-#endif
-        { wait_for_completion, 0 },
-        { interruptible_sleep_on, 0 },
-        { interruptible_sleep_on_timeout, 0 },
-        { sleep_on, 0 },
-        { sleep_on_timeout, 0 },
-        { yield, 0 },
-        { io_schedule, 0 },
-        { io_schedule_timeout, 0 },
-#if defined(CONFIG_SMP) && defined(CONFIG_PREEMPT)
-        { __preempt_spin_lock, 0 },
-        { __preempt_write_lock, 0 },
-#endif
-        /* kernel/timer.c */
-        { schedule_timeout, 1 },
-/*      { nanosleep_restart, 1 }, */
-        /* lib/rwsem-spinlock.c */
-        { __down_read, 1 },
-        { __down_write, 1 },
-};
+} *schedule_frame, mfinfo[64];
+static int mfinfo_num;
 
-static int mips_frame_info_initialized;
 static int __init get_frame_info(struct mips_frame_info *info)
 {
         int i;
         void *func = info->func;
         union mips_instruction *ip = (union mips_instruction *)func;
         info->pc_offset = -1;
-        info->frame_offset = info->omit_fp ? 0 : -1;
+        info->frame_size = 0;
         for (i = 0; i < 128; i++, ip++) {
                 /* if jal, jalr, jr, stop. */
                 if (ip->j_format.opcode == jal_op ||
@@ -320,6 +294,23 @@ static int __init get_frame_info(struct mips_frame_info *info)
                       ip->r_format.func == jr_op)))
                         break;
 
+                if (info->func_size && i >= info->func_size / 4)
+                        break;
+                if (
+#ifdef CONFIG_32BIT
+                    ip->i_format.opcode == addiu_op &&
+#endif
+#ifdef CONFIG_64BIT
+                    ip->i_format.opcode == daddiu_op &&
+#endif
+                    ip->i_format.rs == 29 &&
+                    ip->i_format.rt == 29) {
+                        /* addiu/daddiu sp,sp,-imm */
+                        if (info->frame_size)
+                                continue;
+                        info->frame_size = - ip->i_format.simmediate;
+                }
+
                 if (
 #ifdef CONFIG_32BIT
                     ip->i_format.opcode == sw_op &&
@@ -327,31 +318,20 @@ static int __init get_frame_info(struct mips_frame_info *info)
 #ifdef CONFIG_64BIT
                     ip->i_format.opcode == sd_op &&
 #endif
-                    ip->i_format.rs == 29)
-                {
+                    ip->i_format.rs == 29 &&
+                    ip->i_format.rt == 31) {
                         /* sw / sd $ra, offset($sp) */
-                        if (ip->i_format.rt == 31) {
-                                if (info->pc_offset != -1)
-                                        continue;
-                                info->pc_offset =
-                                        ip->i_format.simmediate / sizeof(long);
-                        }
-                        /* sw / sd $s8, offset($sp) */
-                        if (ip->i_format.rt == 30) {
-//#if 0 /* gcc 3.4 does aggressive optimization... */
-                                if (info->frame_offset != -1)
-                                        continue;
-//#endif
-                                info->frame_offset =
-                                        ip->i_format.simmediate / sizeof(long);
-                        }
+                        if (info->pc_offset != -1)
+                                continue;
+                        info->pc_offset =
+                                ip->i_format.simmediate / sizeof(long);
                 }
         }
-        if (info->pc_offset == -1 || info->frame_offset == -1) {
-                printk("Can't analyze prologue code at %p\n", func);
+        if (info->pc_offset == -1 || info->frame_size == 0) {
+                if (func == schedule)
+                        printk("Can't analyze prologue code at %p\n", func);
                 info->pc_offset = -1;
-                info->frame_offset = -1;
-                return -1;
+                info->frame_size = 0;
         }
 
         return 0;
@@ -359,25 +339,36 @@ static int __init get_frame_info(struct mips_frame_info *info)
 
 static int __init frame_info_init(void)
 {
-        int i, found;
-        for (i = 0; i < ARRAY_SIZE(mfinfo); i++)
-                if (get_frame_info(&mfinfo[i]))
-                        return -1;
-        schedule_frame = mfinfo[0];
-        /* bubble sort */
-        do {
-                struct mips_frame_info tmp;
-                found = 0;
-                for (i = 1; i < ARRAY_SIZE(mfinfo); i++) {
-                        if (mfinfo[i-1].func > mfinfo[i].func) {
-                                tmp = mfinfo[i];
-                                mfinfo[i] = mfinfo[i-1];
-                                mfinfo[i-1] = tmp;
-                                found = 1;
-                        }
-                }
-        } while (found);
-        mips_frame_info_initialized = 1;
+        int i;
+#ifdef CONFIG_KALLSYMS
+        char *modname;
+        char namebuf[KSYM_NAME_LEN + 1];
+        unsigned long start, size, ofs;
+        extern char __sched_text_start[], __sched_text_end[];
+        extern char __lock_text_start[], __lock_text_end[];
+
+        start = (unsigned long)__sched_text_start;
+        for (i = 0; i < ARRAY_SIZE(mfinfo); i++) {
+                if (start == (unsigned long)schedule)
+                        schedule_frame = &mfinfo[i];
+                if (!kallsyms_lookup(start, &size, &ofs, &modname, namebuf))
+                        break;
+                mfinfo[i].func = (void *)(start + ofs);
+                mfinfo[i].func_size = size;
+                start += size - ofs;
+                if (start >= (unsigned long)__lock_text_end)
+                        break;
+                if (start == (unsigned long)__sched_text_end)
+                        start = (unsigned long)__lock_text_start;
+        }
+#else
+        mfinfo[0].func = schedule;
+        schedule_frame = &mfinfo[0];
+#endif
+        for (i = 0; i < ARRAY_SIZE(mfinfo) && mfinfo[i].func; i++)
+                get_frame_info(&mfinfo[i]);
+
+        mfinfo_num = i;
         return 0;
 }
 
@@ -394,47 +385,52 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
         if (t->reg31 == (unsigned long) ret_from_fork)
                 return t->reg31;
 
-        if (schedule_frame.pc_offset < 0)
+        if (!schedule_frame || schedule_frame->pc_offset < 0)
                 return 0;
-        return ((unsigned long *)t->reg29)[schedule_frame.pc_offset];
+        return ((unsigned long *)t->reg29)[schedule_frame->pc_offset];
 }
 
 /* get_wchan - a maintenance nightmare^W^Wpain in the ass ...  */
 unsigned long get_wchan(struct task_struct *p)
 {
         unsigned long stack_page;
-        unsigned long frame, pc;
+        unsigned long pc;
+#ifdef CONFIG_KALLSYMS
+        unsigned long frame;
+#endif
 
         if (!p || p == current || p->state == TASK_RUNNING)
                 return 0;
 
         stack_page = (unsigned long)task_stack_page(p);
-        if (!stack_page || !mips_frame_info_initialized)
+        if (!stack_page || !mfinfo_num)
                 return 0;
 
         pc = thread_saved_pc(p);
+#ifdef CONFIG_KALLSYMS
         if (!in_sched_functions(pc))
                 return pc;
 
-        frame = ((unsigned long *)p->thread.reg30)[schedule_frame.frame_offset];
+        frame = p->thread.reg29 + schedule_frame->frame_size;
         do {
                 int i;
 
                 if (frame < stack_page || frame > stack_page + THREAD_SIZE - 32)
                         return 0;
 
-                for (i = ARRAY_SIZE(mfinfo) - 1; i >= 0; i--) {
+                for (i = mfinfo_num - 1; i >= 0; i--) {
                         if (pc >= (unsigned long) mfinfo[i].func)
                                 break;
                 }
                 if (i < 0)
                         break;
 
-                if (mfinfo[i].omit_fp)
-                        break;
                 pc = ((unsigned long *)frame)[mfinfo[i].pc_offset];
-                frame = ((unsigned long *)frame)[mfinfo[i].frame_offset];
+                if (!mfinfo[i].frame_size)
+                        break;
+                frame += mfinfo[i].frame_size;
         } while (in_sched_functions(pc));
+#endif
 
         return pc;
 }
diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h
index 0fbc492d24b4..36bfc2588aa3 100644
--- a/arch/mips/kernel/signal-common.h
+++ b/arch/mips/kernel/signal-common.h
@@ -176,7 +176,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
         if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0))
                 sp = current->sas_ss_sp + current->sas_ss_size;
 
-        return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? 32 : ALMASK));
+        return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size()-1) : ALMASK));
 }
 
 static inline int install_sigtramp(unsigned int __user *tramp,
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index da3271e1fdac..8a8b8dd90417 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -537,7 +537,7 @@ _sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
         /* The ucontext contains a stack32_t, so we must convert!  */
         if (__get_user(sp, &frame->rs_uc.uc_stack.ss_sp))
                 goto badframe;
-        st.ss_size = (long) sp;
+        st.ss_sp = (void *)(long) sp;
         if (__get_user(st.ss_size, &frame->rs_uc.uc_stack.ss_size))
                 goto badframe;
         if (__get_user(st.ss_flags, &frame->rs_uc.uc_stack.ss_flags))
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index 384fc4a639a4..5a3776096f07 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -108,7 +108,7 @@ _sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
         /* The ucontext contains a stack32_t, so we must convert!  */
         if (__get_user(sp, &frame->rs_uc.uc_stack.ss_sp))
                 goto badframe;
-        st.ss_size = (long) sp;
+        st.ss_sp = (void *)(long) sp;
         if (__get_user(st.ss_size, &frame->rs_uc.uc_stack.ss_size))
                 goto badframe;
         if (__get_user(st.ss_flags, &frame->rs_uc.uc_stack.ss_flags))
diff --git a/arch/mips/kernel/smp_mt.c b/arch/mips/kernel/smp_mt.c
index 794a1c3de2a4..c930364830d0 100644
--- a/arch/mips/kernel/smp_mt.c
+++ b/arch/mips/kernel/smp_mt.c
@@ -68,6 +68,8 @@ void __init sanitize_tlb_entries(void)
 
         set_c0_mvpcontrol(MVPCONTROL_VPC);
 
+        back_to_back_c0_hazard();
+
         /* Disable TLB sharing */
         clear_c0_mvpcontrol(MVPCONTROL_STLB);
 
@@ -102,35 +104,6 @@ void __init sanitize_tlb_entries(void)
         clear_c0_mvpcontrol(MVPCONTROL_VPC);
 }
 
-#if 0
-/*
- * Use c0_MVPConf0 to find out how many CPUs are available, setting up
- * phys_cpu_present_map and the logical/physical mappings.
- */
-void __init prom_build_cpu_map(void)
-{
-        int i, num, ncpus;
-
-        cpus_clear(phys_cpu_present_map);
-
-        /* assume we boot on cpu 0.... */
-        cpu_set(0, phys_cpu_present_map);
-        __cpu_number_map[0] = 0;
-        __cpu_logical_map[0] = 0;
-
-        if (cpu_has_mipsmt) {
-                ncpus = ((read_c0_mvpconf0() & (MVPCONF0_PVPE)) >> MVPCONF0_PVPE_SHIFT) + 1;
-                for (i=1, num=0; i< NR_CPUS && i<ncpus; i++) {
-                        cpu_set(i, phys_cpu_present_map);
-                        __cpu_number_map[i] = ++num;
-                        __cpu_logical_map[num] = i;
-                }
-
-                printk(KERN_INFO "%i available secondary CPU(s)\n", num);
-        }
-}
-#endif
-
 static void ipi_resched_dispatch (struct pt_regs *regs)
 {
         do_IRQ(MIPS_CPU_IPI_RESCHED_IRQ, regs);
@@ -222,6 +195,9 @@ void prom_prepare_cpus(unsigned int max_cpus)
 
                                 /* set config to be the same as vpe0, particularly kseg0 coherency alg */
                                 write_vpe_c0_config( read_c0_config());
+
+                                /* Propagate Config7 */
+                                write_vpe_c0_config7(read_c0_config7());
                         }
 
                 }
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index e51c38cef88e..1b71d91e8268 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -471,61 +471,29 @@ struct flush_icache_range_args {
 static inline void local_r4k_flush_icache_range(void *args)
 {
         struct flush_icache_range_args *fir_args = args;
-        unsigned long dc_lsize = cpu_dcache_line_size();
-        unsigned long ic_lsize = cpu_icache_line_size();
-        unsigned long sc_lsize = cpu_scache_line_size();
         unsigned long start = fir_args->start;
         unsigned long end = fir_args->end;
-        unsigned long addr, aend;
 
         if (!cpu_has_ic_fills_f_dc) {
                 if (end - start > dcache_size) {
                         r4k_blast_dcache();
                 } else {
                         R4600_HIT_CACHEOP_WAR_IMPL;
-                        addr = start & ~(dc_lsize - 1);
-                        aend = (end - 1) & ~(dc_lsize - 1);
-
-                        while (1) {
-                                /* Hit_Writeback_Inv_D */
-                                protected_writeback_dcache_line(addr);
-                                if (addr == aend)
-                                        break;
-                                addr += dc_lsize;
-                        }
+                        protected_blast_dcache_range(start, end);
                 }
 
                 if (!cpu_icache_snoops_remote_store) {
-                        if (end - start > scache_size) {
+                        if (end - start > scache_size)
                                 r4k_blast_scache();
-                        } else {
-                                addr = start & ~(sc_lsize - 1);
-                                aend = (end - 1) & ~(sc_lsize - 1);
-
-                                while (1) {
-                                        /* Hit_Writeback_Inv_SD */
-                                        protected_writeback_scache_line(addr);
-                                        if (addr == aend)
-                                                break;
-                                        addr += sc_lsize;
-                                }
-                        }
+                        else
+                                protected_blast_scache_range(start, end);
                 }
         }
 
         if (end - start > icache_size)
                 r4k_blast_icache();
-        else {
-                addr = start & ~(ic_lsize - 1);
-                aend = (end - 1) & ~(ic_lsize - 1);
-                while (1) {
-                        /* Hit_Invalidate_I */
-                        protected_flush_icache_line(addr);
-                        if (addr == aend)
-                                break;
-                        addr += ic_lsize;
-                }
-        }
+        else
+                protected_blast_icache_range(start, end);
 }
 
 static void r4k_flush_icache_range(unsigned long start, unsigned long end)
@@ -619,27 +587,14 @@ static void r4k_flush_icache_page(struct vm_area_struct *vma,
 
 static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
-
         /* Catch bad driver code */
         BUG_ON(size == 0);
 
         if (cpu_has_subset_pcaches) {
-                unsigned long sc_lsize = cpu_scache_line_size();
-
-                if (size >= scache_size) {
+                if (size >= scache_size)
                         r4k_blast_scache();
-                        return;
-                }
-
-                a = addr & ~(sc_lsize - 1);
-                end = (addr + size - 1) & ~(sc_lsize - 1);
-                while (1) {
-                        flush_scache_line(a);   /* Hit_Writeback_Inv_SD */
-                        if (a == end)
-                                break;
-                        a += sc_lsize;
-                }
+                else
+                        blast_scache_range(addr, addr + size);
                 return;
         }
 
@@ -651,17 +606,8 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
         if (size >= dcache_size) {
                 r4k_blast_dcache();
         } else {
-                unsigned long dc_lsize = cpu_dcache_line_size();
-
                 R4600_HIT_CACHEOP_WAR_IMPL;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        flush_dcache_line(a);   /* Hit_Writeback_Inv_D */
-                        if (a == end)
-                                break;
-                        a += dc_lsize;
-                }
+                blast_dcache_range(addr, addr + size);
         }
 
         bc_wback_inv(addr, size);
@@ -669,44 +615,22 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 
 static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
-
         /* Catch bad driver code */
         BUG_ON(size == 0);
 
         if (cpu_has_subset_pcaches) {
-                unsigned long sc_lsize = cpu_scache_line_size();
-
-                if (size >= scache_size) {
+                if (size >= scache_size)
                         r4k_blast_scache();
-                        return;
-                }
-
-                a = addr & ~(sc_lsize - 1);
-                end = (addr + size - 1) & ~(sc_lsize - 1);
-                while (1) {
-                        flush_scache_line(a);   /* Hit_Writeback_Inv_SD */
-                        if (a == end)
-                                break;
-                        a += sc_lsize;
-                }
+                else
+                        blast_scache_range(addr, addr + size);
                 return;
         }
 
         if (size >= dcache_size) {
                 r4k_blast_dcache();
         } else {
-                unsigned long dc_lsize = cpu_dcache_line_size();
-
                 R4600_HIT_CACHEOP_WAR_IMPL;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        flush_dcache_line(a);   /* Hit_Writeback_Inv_D */
-                        if (a == end)
-                                break;
-                        a += dc_lsize;
-                }
+                blast_dcache_range(addr, addr + size);
         }
 
         bc_inv(addr, size);
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index 0a97a9434eba..7c572bea4a98 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -44,8 +44,6 @@ __asm__ __volatile__( \
 /* TX39H-style cache flush routines. */
 static void tx39h_flush_icache_all(void)
 {
-        unsigned long start = KSEG0;
-        unsigned long end = (start + icache_size);
         unsigned long flags, config;
 
         /* disable icache (set ICE#) */
@@ -53,33 +51,18 @@ static void tx39h_flush_icache_all(void)
         config = read_c0_conf();
         write_c0_conf(config & ~TX39_CONF_ICE);
         TX39_STOP_STREAMING();
-
-        /* invalidate icache */
-        while (start < end) {
-                cache16_unroll32(start, Index_Invalidate_I);
-                start += 0x200;
-        }
-
+        blast_icache16();
         write_c0_conf(config);
         local_irq_restore(flags);
 }
 
 static void tx39h_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
-        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-
         /* Catch bad driver code */
         BUG_ON(size == 0);
 
         iob();
-        a = addr & ~(dc_lsize - 1);
-        end = (addr + size - 1) & ~(dc_lsize - 1);
-        while (1) {
-                invalidate_dcache_line(a); /* Hit_Invalidate_D */
-                if (a == end) break;
-                a += dc_lsize;
-        }
+        blast_inv_dcache_range(addr, addr + size);
 }
 
 
@@ -241,42 +224,21 @@ static void tx39_flush_data_cache_page(unsigned long addr)
 
 static void tx39_flush_icache_range(unsigned long start, unsigned long end)
 {
-        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-        unsigned long addr, aend;
-
         if (end - start > dcache_size)
                 tx39_blast_dcache();
-        else {
-                addr = start & ~(dc_lsize - 1);
-                aend = (end - 1) & ~(dc_lsize - 1);
-
-                while (1) {
-                        /* Hit_Writeback_Inv_D */
-                        protected_writeback_dcache_line(addr);
-                        if (addr == aend)
-                                break;
-                        addr += dc_lsize;
-                }
-        }
+        else
+                protected_blast_dcache_range(start, end);
 
         if (end - start > icache_size)
                 tx39_blast_icache();
         else {
                 unsigned long flags, config;
-                addr = start & ~(dc_lsize - 1);
-                aend = (end - 1) & ~(dc_lsize - 1);
                 /* disable icache (set ICE#) */
                 local_irq_save(flags);
                 config = read_c0_conf();
                 write_c0_conf(config & ~TX39_CONF_ICE);
                 TX39_STOP_STREAMING();
-                while (1) {
-                        /* Hit_Invalidate_I */
-                        protected_flush_icache_line(addr);
-                        if (addr == aend)
-                                break;
-                        addr += dc_lsize;
-                }
+                protected_blast_icache_range(start, end);
                 write_c0_conf(config);
                 local_irq_restore(flags);
         }
@@ -311,7 +273,7 @@ static void tx39_flush_icache_page(struct vm_area_struct *vma, struct page *page
 
 static void tx39_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
+        unsigned long end;
 
         if (((size | addr) & (PAGE_SIZE - 1)) == 0) {
                 end = addr + size;
@@ -322,20 +284,13 @@ static void tx39_dma_cache_wback_inv(unsigned long addr, unsigned long size)
         } else if (size > dcache_size) {
                 tx39_blast_dcache();
         } else {
-                unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        flush_dcache_line(a); /* Hit_Writeback_Inv_D */
-                        if (a == end) break;
-                        a += dc_lsize;
-                }
+                blast_dcache_range(addr, addr + size);
         }
 }
 
 static void tx39_dma_cache_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
+        unsigned long end;
 
         if (((size | addr) & (PAGE_SIZE - 1)) == 0) {
                 end = addr + size;
@@ -346,14 +301,7 @@ static void tx39_dma_cache_inv(unsigned long addr, unsigned long size)
         } else if (size > dcache_size) {
                 tx39_blast_dcache();
         } else {
-                unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        invalidate_dcache_line(a); /* Hit_Invalidate_D */
-                        if (a == end) break;
-                        a += dc_lsize;
-                }
+                blast_inv_dcache_range(addr, addr + size);
         }
 }
 
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 7c914a4c67c3..eca33cfa8a4c 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -29,6 +29,11 @@ config GENERIC_CALIBRATE_DELAY
         bool
         default y
 
+config TIME_LOW_RES
+        bool
+        depends on SMP
+        default y
+
 config GENERIC_ISA_DMA
         bool
 
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index e96c35bddac7..71f0a2fb3078 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -30,7 +30,7 @@ void __delay(unsigned long loops)
          */
         __asm__ __volatile__(
                 "0: brct %0,0b"
-                : /* no outputs */ : "r" (loops/2) );
+                : /* no outputs */ : "r" ((loops/2) + 1));
 }
 
 /*
diff --git a/arch/v850/Kconfig b/arch/v850/Kconfig
index 04494638b963..e7fc3e500342 100644
--- a/arch/v850/Kconfig
+++ b/arch/v850/Kconfig
@@ -28,6 +28,10 @@ config GENERIC_IRQ_PROBE
         bool
         default y
 
+config TIME_LOW_RES
+        bool
+        default y
+
 # Turn off some random 386 crap that can affect device config
 config ISA
         bool
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 4e7dbcc425ff..93e44d0292ab 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -645,7 +645,7 @@ static void pkt_copy_bio_data(struct bio *src_bio, int seg, int offs, struct pag
  * b) The data can be used as cache to avoid read requests if we receive a
  *    new write request for the same zone.
  */
-static void pkt_make_local_copy(struct packet_data *pkt, struct page **pages, int *offsets)
+static void pkt_make_local_copy(struct packet_data *pkt, struct bio_vec *bvec)
 {
         int f, p, offs;
 
@@ -653,15 +653,15 @@ static void pkt_make_local_copy(struct packet_data *pkt, struct page **pages, in
         p = 0;
         offs = 0;
         for (f = 0; f < pkt->frames; f++) {
-                if (pages[f] != pkt->pages[p]) {
-                        void *vfrom = kmap_atomic(pages[f], KM_USER0) + offsets[f];
+                if (bvec[f].bv_page != pkt->pages[p]) {
+                        void *vfrom = kmap_atomic(bvec[f].bv_page, KM_USER0) + bvec[f].bv_offset;
                         void *vto = page_address(pkt->pages[p]) + offs;
                         memcpy(vto, vfrom, CD_FRAMESIZE);
                         kunmap_atomic(vfrom, KM_USER0);
-                        pages[f] = pkt->pages[p];
-                        offsets[f] = offs;
+                        bvec[f].bv_page = pkt->pages[p];
+                        bvec[f].bv_offset = offs;
                 } else {
-                        BUG_ON(offsets[f] != offs);
+                        BUG_ON(bvec[f].bv_offset != offs);
                 }
                 offs += CD_FRAMESIZE;
                 if (offs >= PAGE_SIZE) {
@@ -991,18 +991,17 @@ try_next_bio:
 static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
 {
         struct bio *bio;
-        struct page *pages[PACKET_MAX_SIZE];
-        int offsets[PACKET_MAX_SIZE];
         int f;
         int frames_write;
+        struct bio_vec *bvec = pkt->w_bio->bi_io_vec;
 
         for (f = 0; f < pkt->frames; f++) {
-                pages[f] = pkt->pages[(f * CD_FRAMESIZE) / PAGE_SIZE];
-                offsets[f] = (f * CD_FRAMESIZE) % PAGE_SIZE;
+                bvec[f].bv_page = pkt->pages[(f * CD_FRAMESIZE) / PAGE_SIZE];
+                bvec[f].bv_offset = (f * CD_FRAMESIZE) % PAGE_SIZE;
         }
 
         /*
-         * Fill-in pages[] and offsets[] with data from orig_bios.
+         * Fill-in bvec with data from orig_bios.
          */
         frames_write = 0;
         spin_lock(&pkt->lock);
@@ -1024,11 +1023,11 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
                         }
 
                         if (src_bvl->bv_len - src_offs >= CD_FRAMESIZE) {
-                                pages[f] = src_bvl->bv_page;
-                                offsets[f] = src_bvl->bv_offset + src_offs;
+                                bvec[f].bv_page = src_bvl->bv_page;
+                                bvec[f].bv_offset = src_bvl->bv_offset + src_offs;
                         } else {
                                 pkt_copy_bio_data(bio, segment, src_offs,
-                                                  pages[f], offsets[f]);
+                                                  bvec[f].bv_page, bvec[f].bv_offset);
                         }
                         src_offs += CD_FRAMESIZE;
                         frames_write++;
@@ -1042,7 +1041,7 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
         BUG_ON(frames_write != pkt->write_size);
 
         if (test_bit(PACKET_MERGE_SEGS, &pd->flags) || (pkt->write_size < pkt->frames)) {
-                pkt_make_local_copy(pkt, pages, offsets);
+                pkt_make_local_copy(pkt, bvec);
                 pkt->cache_valid = 1;
         } else {
                 pkt->cache_valid = 0;
@@ -1055,17 +1054,9 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
         pkt->w_bio->bi_bdev = pd->bdev;
         pkt->w_bio->bi_end_io = pkt_end_io_packet_write;
         pkt->w_bio->bi_private = pkt;
-        for (f = 0; f < pkt->frames; f++) {
-                if ((f + 1 < pkt->frames) && (pages[f + 1] == pages[f]) &&
-                    (offsets[f + 1] = offsets[f] + CD_FRAMESIZE)) {
-                        if (!bio_add_page(pkt->w_bio, pages[f], CD_FRAMESIZE * 2, offsets[f]))
-                                BUG();
-                        f++;
-                } else {
-                        if (!bio_add_page(pkt->w_bio, pages[f], CD_FRAMESIZE, offsets[f]))
-                                BUG();
-                }
-        }
+        for (f = 0; f < pkt->frames; f++)
+                if (!bio_add_page(pkt->w_bio, bvec[f].bv_page, CD_FRAMESIZE, bvec[f].bv_offset))
+                        BUG();
         VPRINTK("pktcdvd: vcnt=%d\n", pkt->w_bio->bi_vcnt);
 
         atomic_set(&pkt->io_wait, 1);
@@ -1548,7 +1539,7 @@ static int pkt_good_disc(struct pktcdvd_device *pd, disc_information *di)
                 case 0x12: /* DVD-RAM */
                         return 0;
                 default:
-                        printk("pktcdvd: Wrong disc profile (%x)\n", pd->mmc3_profile);
+                        VPRINTK("pktcdvd: Wrong disc profile (%x)\n", pd->mmc3_profile);
                         return 1;
         }
 
@@ -1894,8 +1885,8 @@ static int pkt_open_write(struct pktcdvd_device *pd)
         unsigned int write_speed, media_write_speed, read_speed;
 
         if ((ret = pkt_probe_settings(pd))) {
-                DPRINTK("pktcdvd: %s failed probe\n", pd->name);
-                return -EIO;
+                VPRINTK("pktcdvd: %s failed probe\n", pd->name);
+                return -EROFS;
         }
 
         if ((ret = pkt_set_write_settings(pd))) {
@@ -2053,10 +2044,9 @@ static int pkt_open(struct inode *inode, struct file *file)
                         goto out_dec;
                 }
         } else {
-                if (pkt_open_dev(pd, file->f_mode & FMODE_WRITE)) {
-                        ret = -EIO;
+                ret = pkt_open_dev(pd, file->f_mode & FMODE_WRITE);
+                if (ret)
                         goto out_dec;
-                }
                 /*
                  * needed here as well, since ext2 (among others) may change
                  * the blocksize at mount time
@@ -2436,11 +2426,12 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
                  * The door gets locked when the device is opened, so we
                  * have to unlock it or else the eject command fails.
                  */
-                pkt_lock_door(pd, 0);
+                if (pd->refcnt == 1)
+                        pkt_lock_door(pd, 0);
                 return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
 
         default:
-                printk("pktcdvd: Unknown ioctl for %s (%x)\n", pd->name, cmd);
+                VPRINTK("pktcdvd: Unknown ioctl for %s (%x)\n", pd->name, cmd);
                 return -ENOTTY;
         }
 
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index 57539d8f9f7c..09dc4b01232c 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -150,17 +150,6 @@ static void rs_wait_until_sent(struct tty_struct *, int);
 /* Standard COM flags (except for COM4, because of the 8514 problem) */
 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
 
-/*
- * tmp_buf is used as a temporary buffer by serial_write.  We need to
- * lock it in case the memcpy_fromfs blocks while swapping in a page,
- * and some other program tries to do a serial write at the same time.
- * Since the lock will only come under contention when the system is
- * swapping and available memory is low, it makes sense to share one
- * buffer across all the serial ports, since it significantly saves
- * memory if large numbers of serial ports are open.
- */
-static unsigned char *tmp_buf;
-
 static inline int serial_paranoia_check(struct esp_struct *info,
                                         char *name, const char *routine)
 {
@@ -1267,7 +1256,7 @@ static int rs_write(struct tty_struct * tty,
         if (serial_paranoia_check(info, tty->name, "rs_write"))
                 return 0;
 
-        if (!tty || !info->xmit_buf || !tmp_buf)
+        if (!tty || !info->xmit_buf)
                 return 0;
             
         while (1) {
@@ -2291,11 +2280,7 @@ static int esp_open(struct tty_struct *tty, struct file * filp)
         tty->driver_data = info;
         info->tty = tty;
 
-        if (!tmp_buf) {
-                tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL);
-                if (!tmp_buf)
-                        return -ENOMEM;
-        }
+        spin_unlock_irqrestore(&info->lock, flags);
         
         /*
          * Start up serial port
@@ -2602,9 +2587,6 @@ static void __exit espserial_exit(void)
                 free_pages((unsigned long)dma_buffer,
                         get_order(DMA_BUFFER_SZ));
 
-        if (tmp_buf)
-                free_page((unsigned long)tmp_buf);
-
         while (free_pio_buf) {
                 pio_buf = free_pio_buf->next;
                 kfree(free_pio_buf);
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 66a2fee06eb9..ef140ebde117 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -956,22 +956,18 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
                 }
         } else if (res->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
                 struct acpi_resource_extended_irq *irqp;
-                int i;
+                int i, irq;
 
                 irqp = &res->data.extended_irq;
 
-                if (irqp->interrupt_count > 0) {
-                        hdp->hd_nirqs = irqp->interrupt_count;
-
-                        for (i = 0; i < hdp->hd_nirqs; i++) {
-                                int rc =
-                                    acpi_register_gsi(irqp->interrupts[i],
-                                                      irqp->triggering,
-                                                      irqp->polarity);
-                                if (rc < 0)
-                                        return AE_ERROR;
-                                hdp->hd_irq[i] = rc;
-                        }
+                for (i = 0; i < irqp->interrupt_count; i++) {
+                        irq = acpi_register_gsi(irqp->interrupts[i],
+                                      irqp->triggering, irqp->polarity);
+                        if (irq < 0)
+                                return AE_ERROR;
+
+                        hdp->hd_irq[hdp->hd_nirqs] = irq;
+                        hdp->hd_nirqs++;
                 }
         }
 
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a23816d3e9a1..e9bba94fc898 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1841,7 +1841,6 @@ static void release_dev(struct file * filp)
                 tty_closing = tty->count <= 1;
                 o_tty_closing = o_tty &&
                         (o_tty->count <= (pty_master ? 1 : 0));
-                up(&tty_sem);
                 do_sleep = 0;
 
                 if (tty_closing) {
@@ -1869,6 +1868,7 @@ static void release_dev(struct file * filp)
 
                 printk(KERN_WARNING "release_dev: %s: read/write wait queue "
                                     "active!\n", tty_name(tty, buf));
+                up(&tty_sem);
                 schedule();
         }       
 
@@ -1877,8 +1877,6 @@ static void release_dev(struct file * filp)
          * both sides, and we've completed the last operation that could 
          * block, so it's safe to proceed with closing.
          */
-         
-        down(&tty_sem);
         if (pty_master) {
                 if (--o_tty->count < 0) {
                         printk(KERN_WARNING "release_dev: bad pty slave count "
@@ -1892,7 +1890,6 @@ static void release_dev(struct file * filp)
                        tty->count, tty_name(tty, buf));
                 tty->count = 0;
         }
-        up(&tty_sem);
         
         /*
          * We've decremented tty->count, so we need to remove this file
@@ -1937,6 +1934,8 @@ static void release_dev(struct file * filp)
                 read_unlock(&tasklist_lock);
         }
 
+        up(&tty_sem);
+
         /* check whether both sides are closing ... */
         if (!tty_closing || (o_tty && !o_tty_closing))
                 return;
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 2b286e865163..43b96e298363 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -13,11 +13,6 @@
  * License along with this program; if not, write the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  *
- * Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
  * For further information regarding this notice, see:
  *
  * http://oss.sgi.com/projects/GenInfo/NoticeExplan
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index d393b504bf26..c82f47a66e48 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -665,7 +665,15 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
         struct ib_wc mad_wc;
         struct ib_send_wr *send_wr = &mad_send_wr->send_wr;
 
-        if (!smi_handle_dr_smp_send(smp, device->node_type, port_num)) {
+        /*
+         * Directed route handling starts if the initial LID routed part of
+         * a request or the ending LID routed part of a response is empty.
+         * If we are at the start of the LID routed part, don't update the
+         * hop_ptr or hop_cnt.  See section 14.2.2, Vol 1 IB spec.
+         */
+        if ((ib_get_smp_direction(smp) ? smp->dr_dlid : smp->dr_slid) ==
+             IB_LID_PERMISSIVE &&
+            !smi_handle_dr_smp_send(smp, device->node_type, port_num)) {
                 ret = -EINVAL;
                 printk(KERN_ERR PFX "Invalid directed route\n");
                 goto out;
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index f9b9b93dc501..2825615ce81c 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -1029,25 +1029,6 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
         MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
         dev_lim->uar_scratch_entry_sz = size;
 
-        mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
-                  dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
-        mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
-                  dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
-        mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
-                  dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
-        mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
-                  dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
-        mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
-                  dev_lim->reserved_mrws, dev_lim->reserved_mtts);
-        mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
-                  dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
-        mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
-                  dev_lim->max_pds, dev_lim->reserved_mgms);
-        mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
-                  dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
-
-        mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
-
         if (mthca_is_memfree(dev)) {
                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
                 dev_lim->max_srq_sz = 1 << field;
@@ -1093,6 +1074,25 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
                 dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
         }
 
+        mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
+                  dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
+        mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
+                  dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
+        mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
+                  dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
+        mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
+                  dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
+        mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
+                  dev_lim->reserved_mrws, dev_lim->reserved_mtts);
+        mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
+                  dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
+        mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
+                  dev_lim->max_pds, dev_lim->reserved_mgms);
+        mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
+                  dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
+
+        mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
+
 out:
         mthca_free_mailbox(dev, mailbox);
         return err;
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 2a165fd06e57..e481037288d6 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -53,8 +53,8 @@
 
 #define DRV_NAME        "ib_mthca"
 #define PFX             DRV_NAME ": "
-#define DRV_VERSION     "0.06"
-#define DRV_RELDATE     "June 23, 2005"
+#define DRV_VERSION     "0.07"
+#define DRV_RELDATE     "February 13, 2006"
 
 enum {
         MTHCA_FLAG_DDR_HIDDEN = 1 << 1,
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index e0a5412b7e68..2f85a9a831b1 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -78,6 +78,7 @@ enum {
         IPOIB_FLAG_SUBINTERFACE   = 4,
         IPOIB_MCAST_RUN           = 5,
         IPOIB_STOP_REAPER         = 6,
+        IPOIB_MCAST_STARTED       = 7,
 
         IPOIB_MAX_BACKOFF_SECONDS = 16,
 
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index ccaa0c387076..a2408d7ec598 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -533,8 +533,10 @@ void ipoib_mcast_join_task(void *dev_ptr)
         }
 
         if (!priv->broadcast) {
-                priv->broadcast = ipoib_mcast_alloc(dev, 1);
-                if (!priv->broadcast) {
+                struct ipoib_mcast *broadcast;
+
+                broadcast = ipoib_mcast_alloc(dev, 1);
+                if (!broadcast) {
                         ipoib_warn(priv, "failed to allocate broadcast group\n");
                         mutex_lock(&mcast_mutex);
                         if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
@@ -544,10 +546,11 @@ void ipoib_mcast_join_task(void *dev_ptr)
                         return;
                 }
 
-                memcpy(priv->broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
+                spin_lock_irq(&priv->lock);
+                memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
                        sizeof (union ib_gid));
+                priv->broadcast = broadcast;
 
-                spin_lock_irq(&priv->lock);
                 __ipoib_mcast_add(dev, priv->broadcast);
                 spin_unlock_irq(&priv->lock);
         }
@@ -601,6 +604,10 @@ int ipoib_mcast_start_thread(struct net_device *dev)
                 queue_work(ipoib_workqueue, &priv->mcast_task);
         mutex_unlock(&mcast_mutex);
 
+        spin_lock_irq(&priv->lock);
+        set_bit(IPOIB_MCAST_STARTED, &priv->flags);
+        spin_unlock_irq(&priv->lock);
+
         return 0;
 }
 
@@ -611,6 +618,10 @@ int ipoib_mcast_stop_thread(struct net_device *dev, int flush)
 
         ipoib_dbg_mcast(priv, "stopping multicast thread\n");
 
+        spin_lock_irq(&priv->lock);
+        clear_bit(IPOIB_MCAST_STARTED, &priv->flags);
+        spin_unlock_irq(&priv->lock);
+
         mutex_lock(&mcast_mutex);
         clear_bit(IPOIB_MCAST_RUN, &priv->flags);
         cancel_delayed_work(&priv->mcast_task);
@@ -693,6 +704,14 @@ void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
          */
         spin_lock(&priv->lock);
 
+        if (!test_bit(IPOIB_MCAST_STARTED, &priv->flags)        ||
+            !priv->broadcast                                    ||
+            !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
+                ++priv->stats.tx_dropped;
+                dev_kfree_skb_any(skb);
+                goto unlock;
+        }
+
         mcast = __ipoib_mcast_find(dev, mgid);
         if (!mcast) {
                 /* Let's create a new send only group now */
@@ -754,6 +773,7 @@ out:
                 ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN);
         }
 
+unlock:
         spin_unlock(&priv->lock);
 }
 
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index f190a99604f0..393633681f49 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -2359,8 +2359,8 @@ isdn_tty_at_cout(char *msg, modem_info * info)
 
         /* use queue instead of direct, if online and */
         /* data is in queue or buffer is full */
-        if ((info->online && tty_buffer_request_room(tty, l) < l) ||
-            (!skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
+        if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
+            !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
                 skb = alloc_skb(l, GFP_ATOMIC);
                 if (!skb) {
                         spin_unlock_irqrestore(&info->readlock, flags);
diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c
index 747602aa5615..b85e2b180a44 100644
--- a/drivers/video/neofb.c
+++ b/drivers/video/neofb.c
@@ -1334,6 +1334,12 @@ static int neofb_blank(int blank_mode, struct fb_info *info)
         struct neofb_par *par = info->par;
         int seqflags, lcdflags, dpmsflags, reg;
 
+        /*
+         * Reload the value stored in the register, might have been changed via
+         * FN keystroke
+         */
+        par->PanelDispCntlReg1 = vga_rgfx(NULL, 0x20) & 0x03;
+
         switch (blank_mode) {
         case FB_BLANK_POWERDOWN:        /* powerdown - both sync lines down */
                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
@@ -1366,7 +1372,7 @@ static int neofb_blank(int blank_mode, struct fb_info *info)
         case FB_BLANK_NORMAL:           /* just blank screen (backlight stays on) */
                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
                 lcdflags = par->PanelDispCntlReg1 & 0x02; /* LCD normal */
-                dpmsflags = 0;                  /* no hsync/vsync suppression */
+                dpmsflags = 0x00;       /* no hsync/vsync suppression */
                 break;
         case FB_BLANK_UNBLANK:          /* unblank */
                 seqflags = 0;                   /* Enable sequencer */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index d17c97d07c80..675bd2568297 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1442,13 +1442,15 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data,
                                          &bytes_read, &smb_read_data,
                                          &buf_type);
                         pSMBr = (struct smb_com_read_rsp *)smb_read_data;
-                        if (copy_to_user(current_offset, 
-                                         smb_read_data + 4 /* RFC1001 hdr */
-                                         + le16_to_cpu(pSMBr->DataOffset), 
-                                         bytes_read)) {
-                                rc = -EFAULT;
-                        }
                         if (smb_read_data) {
+                                if (copy_to_user(current_offset,
+                                                smb_read_data +
+                                                4 /* RFC1001 length field */ +
+                                                le16_to_cpu(pSMBr->DataOffset),
+                                                bytes_read)) {
+                                        rc = -EFAULT;
+                                }
+
                                 if(buf_type == CIFS_SMALL_BUFFER)
                                         cifs_small_buf_release(smb_read_data);
                                 else if(buf_type == CIFS_LARGE_BUFFER)
diff --git a/fs/exec.c b/fs/exec.c
index 055378d2513e..0e1c95074d42 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1403,7 +1403,7 @@ static void zap_threads (struct mm_struct *mm)
                 do_each_thread(g,p) {
                         if (mm == p->mm && p != tsk &&
                             p->ptrace && p->parent->mm == mm) {
-                                __ptrace_unlink(p);
+                                __ptrace_detach(p, 0);
                         }
                 } while_each_thread(g,p);
                 write_unlock_irq(&tasklist_lock);
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index e6265a0b56b8..543ed543d1e5 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -24,75 +24,29 @@
 #include <linux/slab.h>
 
 /*
- * Unlink a buffer from a transaction checkpoint list.
+ * Unlink a buffer from a transaction.
  *
  * Called with j_list_lock held.
  */
 
-static void __buffer_unlink_first(struct journal_head *jh)
+static inline void __buffer_unlink(struct journal_head *jh)
 {
         transaction_t *transaction;
 
         transaction = jh->b_cp_transaction;
+        jh->b_cp_transaction = NULL;
 
         jh->b_cpnext->b_cpprev = jh->b_cpprev;
         jh->b_cpprev->b_cpnext = jh->b_cpnext;
-        if (transaction->t_checkpoint_list == jh) {
+        if (transaction->t_checkpoint_list == jh)
                 transaction->t_checkpoint_list = jh->b_cpnext;
-                if (transaction->t_checkpoint_list == jh)
-                        transaction->t_checkpoint_list = NULL;
-        }
-}
-
-/*
- * Unlink a buffer from a transaction checkpoint(io) list.
- *
- * Called with j_list_lock held.
- */
-
-static inline void __buffer_unlink(struct journal_head *jh)
-{
-        transaction_t *transaction;
-
-        transaction = jh->b_cp_transaction;
-
-        __buffer_unlink_first(jh);
-        if (transaction->t_checkpoint_io_list == jh) {
-                transaction->t_checkpoint_io_list = jh->b_cpnext;
-                if (transaction->t_checkpoint_io_list == jh)
-                        transaction->t_checkpoint_io_list = NULL;
-        }
-}
-
-/*
- * Move a buffer from the checkpoint list to the checkpoint io list
- *
- * Called with j_list_lock held
- */
-
-static inline void __buffer_relink_io(struct journal_head *jh)
-{
-        transaction_t *transaction;
-
-        transaction = jh->b_cp_transaction;
-        __buffer_unlink_first(jh);
-
-        if (!transaction->t_checkpoint_io_list) {
-                jh->b_cpnext = jh->b_cpprev = jh;
-        } else {
-                jh->b_cpnext = transaction->t_checkpoint_io_list;
-                jh->b_cpprev = transaction->t_checkpoint_io_list->b_cpprev;
-                jh->b_cpprev->b_cpnext = jh;
-                jh->b_cpnext->b_cpprev = jh;
-        }
-        transaction->t_checkpoint_io_list = jh;
+        if (transaction->t_checkpoint_list == jh)
+                transaction->t_checkpoint_list = NULL;
 }
 
 /*
  * Try to release a checkpointed buffer from its transaction.
- * Returns 1 if we released it and 2 if we also released the
- * whole transaction.
- *
+ * Returns 1 if we released it.
  * Requires j_list_lock
  * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
  */
@@ -103,11 +57,12 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
 
         if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) {
                 JBUFFER_TRACE(jh, "remove from checkpoint list");
-                ret = __journal_remove_checkpoint(jh) + 1;
+                __journal_remove_checkpoint(jh);
                 jbd_unlock_bh_state(bh);
                 journal_remove_journal_head(bh);
                 BUFFER_TRACE(bh, "release");
                 __brelse(bh);
+                ret = 1;
         } else {
                 jbd_unlock_bh_state(bh);
         }
@@ -162,53 +117,83 @@ static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh)
 }
 
 /*
- * Clean up transaction's list of buffers submitted for io.
- * We wait for any pending IO to complete and remove any clean
- * buffers. Note that we take the buffers in the opposite ordering
- * from the one in which they were submitted for IO.
+ * Clean up a transaction's checkpoint list.
+ *
+ * We wait for any pending IO to complete and make sure any clean
+ * buffers are removed from the transaction.
+ *
+ * Return 1 if we performed any actions which might have destroyed the
+ * checkpoint.  (journal_remove_checkpoint() deletes the transaction when
+ * the last checkpoint buffer is cleansed)
  *
  * Called with j_list_lock held.
  */
-
-static void __wait_cp_io(journal_t *journal, transaction_t *transaction)
+static int __cleanup_transaction(journal_t *journal, transaction_t *transaction)
 {
-        struct journal_head *jh;
+        struct journal_head *jh, *next_jh, *last_jh;
         struct buffer_head *bh;
-        tid_t this_tid;
-        int released = 0;
-
-        this_tid = transaction->t_tid;
-restart:
-        /* Didn't somebody clean up the transaction in the meanwhile */
-        if (journal->j_checkpoint_transactions != transaction ||
-                transaction->t_tid != this_tid)
-                return;
-        while (!released && transaction->t_checkpoint_io_list) {
-                jh = transaction->t_checkpoint_io_list;
+        int ret = 0;
+
+        assert_spin_locked(&journal->j_list_lock);
+        jh = transaction->t_checkpoint_list;
+        if (!jh)
+                return 0;
+
+        last_jh = jh->b_cpprev;
+        next_jh = jh;
+        do {
+                jh = next_jh;
                 bh = jh2bh(jh);
-                if (!jbd_trylock_bh_state(bh)) {
-                        jbd_sync_bh(journal, bh);
-                        spin_lock(&journal->j_list_lock);
-                        goto restart;
-                }
                 if (buffer_locked(bh)) {
                         atomic_inc(&bh->b_count);
                         spin_unlock(&journal->j_list_lock);
-                        jbd_unlock_bh_state(bh);
                         wait_on_buffer(bh);
                         /* the journal_head may have gone by now */
                         BUFFER_TRACE(bh, "brelse");
                         __brelse(bh);
-                        spin_lock(&journal->j_list_lock);
-                        goto restart;
+                        goto out_return_1;
                 }
+
                 /*
-                 * Now in whatever state the buffer currently is, we know that
-                 * it has been written out and so we can drop it from the list
+                 * This is foul
                  */
-                released = __journal_remove_checkpoint(jh);
-                jbd_unlock_bh_state(bh);
-        }
+                if (!jbd_trylock_bh_state(bh)) {
+                        jbd_sync_bh(journal, bh);
+                        goto out_return_1;
+                }
+
+                if (jh->b_transaction != NULL) {
+                        transaction_t *t = jh->b_transaction;
+                        tid_t tid = t->t_tid;
+
+                        spin_unlock(&journal->j_list_lock);
+                        jbd_unlock_bh_state(bh);
+                        log_start_commit(journal, tid);
+                        log_wait_commit(journal, tid);
+                        goto out_return_1;
+                }
+
+                /*
+                 * AKPM: I think the buffer_jbddirty test is redundant - it
+                 * shouldn't have NULL b_transaction?
+                 */
+                next_jh = jh->b_cpnext;
+                if (!buffer_dirty(bh) && !buffer_jbddirty(bh)) {
+                        BUFFER_TRACE(bh, "remove from checkpoint");
+                        __journal_remove_checkpoint(jh);
+                        jbd_unlock_bh_state(bh);
+                        journal_remove_journal_head(bh);
+                        __brelse(bh);
+                        ret = 1;
+                } else {
+                        jbd_unlock_bh_state(bh);
+                }
+        } while (jh != last_jh);
+
+        return ret;
+out_return_1:
+        spin_lock(&journal->j_list_lock);
+        return 1;
 }
 
 #define NR_BATCH        64
@@ -218,7 +203,9 @@ __flush_batch(journal_t *journal, struct buffer_head **bhs, int *batch_count)
 {
         int i;
 
+        spin_unlock(&journal->j_list_lock);
         ll_rw_block(SWRITE, *batch_count, bhs);
+        spin_lock(&journal->j_list_lock);
         for (i = 0; i < *batch_count; i++) {
                 struct buffer_head *bh = bhs[i];
                 clear_buffer_jwrite(bh);
@@ -234,46 +221,19 @@ __flush_batch(journal_t *journal, struct buffer_head **bhs, int *batch_count)
  * Return 1 if something happened which requires us to abort the current
  * scan of the checkpoint list.  
  *
- * Called with j_list_lock held and drops it if 1 is returned
+ * Called with j_list_lock held.
  * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
  */
-static int __process_buffer(journal_t *journal, struct journal_head *jh,
-                        struct buffer_head **bhs, int *batch_count)
+static int __flush_buffer(journal_t *journal, struct journal_head *jh,
+                        struct buffer_head **bhs, int *batch_count,
+                        int *drop_count)
 {
         struct buffer_head *bh = jh2bh(jh);
         int ret = 0;
 
-        if (buffer_locked(bh)) {
-                get_bh(bh);
-                spin_unlock(&journal->j_list_lock);
-                jbd_unlock_bh_state(bh);
-                wait_on_buffer(bh);
-                /* the journal_head may have gone by now */
-                BUFFER_TRACE(bh, "brelse");
-                put_bh(bh);
-                ret = 1;
-        }
-        else if (jh->b_transaction != NULL) {
-                transaction_t *t = jh->b_transaction;
-                tid_t tid = t->t_tid;
+        if (buffer_dirty(bh) && !buffer_locked(bh) && jh->b_jlist == BJ_None) {
+                J_ASSERT_JH(jh, jh->b_transaction == NULL);
 
-                spin_unlock(&journal->j_list_lock);
-                jbd_unlock_bh_state(bh);
-                log_start_commit(journal, tid);
-                log_wait_commit(journal, tid);
-                ret = 1;
-        }
-        else if (!buffer_dirty(bh)) {
-                J_ASSERT_JH(jh, !buffer_jbddirty(bh));
-                BUFFER_TRACE(bh, "remove from checkpoint");
-                __journal_remove_checkpoint(jh);
-                spin_unlock(&journal->j_list_lock);
-                jbd_unlock_bh_state(bh);
-                journal_remove_journal_head(bh);
-                put_bh(bh);
-                ret = 1;
-        }
-        else {
                 /*
                  * Important: we are about to write the buffer, and
                  * possibly block, while still holding the journal lock.
@@ -286,30 +246,45 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
                 J_ASSERT_BH(bh, !buffer_jwrite(bh));
                 set_buffer_jwrite(bh);
                 bhs[*batch_count] = bh;
-                __buffer_relink_io(jh);
                 jbd_unlock_bh_state(bh);
                 (*batch_count)++;
                 if (*batch_count == NR_BATCH) {
-                        spin_unlock(&journal->j_list_lock);
                         __flush_batch(journal, bhs, batch_count);
                         ret = 1;
                 }
+        } else {
+                int last_buffer = 0;
+                if (jh->b_cpnext == jh) {
+                        /* We may be about to drop the transaction.  Tell the
+                         * caller that the lists have changed.
+                         */
+                        last_buffer = 1;
+                }
+                if (__try_to_free_cp_buf(jh)) {
+                        (*drop_count)++;
+                        ret = last_buffer;
+                }
         }
         return ret;
 }
 
 /*
- * Perform an actual checkpoint. We take the first transaction on the
- * list of transactions to be checkpointed and send all its buffers
- * to disk. We submit larger chunks of data at once.
+ * Perform an actual checkpoint.  We don't write out only enough to
+ * satisfy the current blocked requests: rather we submit a reasonably
+ * sized chunk of the outstanding data to disk at once for
+ * efficiency.  __log_wait_for_space() will retry if we didn't free enough.
  * 
+ * However, we _do_ take into account the amount requested so that once
+ * the IO has been queued, we can return as soon as enough of it has
+ * completed to disk.
+ *
  * The journal should be locked before calling this function.
  */
 int log_do_checkpoint(journal_t *journal)
 {
-        transaction_t *transaction;
-        tid_t this_tid;
         int result;
+        int batch_count = 0;
+        struct buffer_head *bhs[NR_BATCH];
 
         jbd_debug(1, "Start checkpoint\n");
 
@@ -324,70 +299,79 @@ int log_do_checkpoint(journal_t *journal)
                 return result;
 
         /*
-         * OK, we need to start writing disk blocks.  Take one transaction
-         * and write it.
+         * OK, we need to start writing disk blocks.  Try to free up a
+         * quarter of the log in a single checkpoint if we can.
          */
-        spin_lock(&journal->j_list_lock);
-        if (!journal->j_checkpoint_transactions)
-                goto out;
-        transaction = journal->j_checkpoint_transactions;
-        this_tid = transaction->t_tid;
-restart:
         /*
-         * If someone cleaned up this transaction while we slept, we're
-         * done (maybe it's a new transaction, but it fell at the same
-         * address).
+         * AKPM: check this code.  I had a feeling a while back that it
+         * degenerates into a busy loop at unmount time.
          */
-        if (journal->j_checkpoint_transactions == transaction &&
-                        transaction->t_tid == this_tid) {
-                int batch_count = 0;
-                struct buffer_head *bhs[NR_BATCH];
-                struct journal_head *jh;
-                int retry = 0;
-
-                while (!retry && transaction->t_checkpoint_list) {
+        spin_lock(&journal->j_list_lock);
+        while (journal->j_checkpoint_transactions) {
+                transaction_t *transaction;
+                struct journal_head *jh, *last_jh, *next_jh;
+                int drop_count = 0;
+                int cleanup_ret, retry = 0;
+                tid_t this_tid;
+
+                transaction = journal->j_checkpoint_transactions;
+                this_tid = transaction->t_tid;
+                jh = transaction->t_checkpoint_list;
+                last_jh = jh->b_cpprev;
+                next_jh = jh;
+                do {
                         struct buffer_head *bh;
 
-                        jh = transaction->t_checkpoint_list;
+                        jh = next_jh;
+                        next_jh = jh->b_cpnext;
                         bh = jh2bh(jh);
                         if (!jbd_trylock_bh_state(bh)) {
                                 jbd_sync_bh(journal, bh);
+                                spin_lock(&journal->j_list_lock);
                                 retry = 1;
                                 break;
                         }
-                        retry = __process_buffer(journal, jh, bhs,
-                                                &batch_count);
-                        if (!retry &&
-                            lock_need_resched(&journal->j_list_lock)) {
-                                spin_unlock(&journal->j_list_lock);
+                        retry = __flush_buffer(journal, jh, bhs, &batch_count, &drop_count);
+                        if (cond_resched_lock(&journal->j_list_lock)) {
                                 retry = 1;
                                 break;
                         }
-                }
+                } while (jh != last_jh && !retry);
 
                 if (batch_count) {
-                        if (!retry) {
-                                spin_unlock(&journal->j_list_lock);
-                                retry = 1;
-                        }
                         __flush_batch(journal, bhs, &batch_count);
+                        retry = 1;
                 }
 
-                if (retry) {
-                        spin_lock(&journal->j_list_lock);
-                        goto restart;
-                }
                 /*
-                 * Now we have cleaned up the first transaction's checkpoint
-                 * list.  Let's clean up the second one.
+                 * If someone cleaned up this transaction while we slept, we're
+                 * done
+                 */
+                if (journal->j_checkpoint_transactions != transaction)
+                        break;
+                if (retry)
+                        continue;
+                /*
+                 * Maybe it's a new transaction, but it fell at the same
+                 * address
                  */
-                __wait_cp_io(journal, transaction);
+                if (transaction->t_tid != this_tid)
+                        continue;
+                /*
+                 * We have walked the whole transaction list without
+                 * finding anything to write to disk.  We had better be
+                 * able to make some progress or we are in trouble.
+                 */
+                cleanup_ret = __cleanup_transaction(journal, transaction);
+                J_ASSERT(drop_count != 0 || cleanup_ret != 0);
+                if (journal->j_checkpoint_transactions != transaction)
+                        break;
         }
-out:
         spin_unlock(&journal->j_list_lock);
         result = cleanup_journal_tail(journal);
         if (result < 0)
                 return result;
+
         return 0;
 }
 
@@ -472,91 +456,52 @@ int cleanup_journal_tail(journal_t *journal)
 /* Checkpoint list management */
 
 /*
- * journal_clean_one_cp_list
- *
- * Find all the written-back checkpoint buffers in the given list and release them.
- *
- * Called with the journal locked.
- * Called with j_list_lock held.
- * Returns number of bufers reaped (for debug)
- */
-
-static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
-{
-        struct journal_head *last_jh;
-        struct journal_head *next_jh = jh;
-        int ret, freed = 0;
-
-        *released = 0;
-        if (!jh)
-                return 0;
-
-        last_jh = jh->b_cpprev;
-        do {
-                jh = next_jh;
-                next_jh = jh->b_cpnext;
-                /* Use trylock because of the ranking */
-                if (jbd_trylock_bh_state(jh2bh(jh))) {
-                        ret = __try_to_free_cp_buf(jh);
-                        if (ret) {
-                                freed++;
-                                if (ret == 2) {
-                                        *released = 1;
-                                        return freed;
-                                }
-                        }
-                }
-                /*
-                 * This function only frees up some memory if possible so we
-                 * dont have an obligation to finish processing. Bail out if
-                 * preemption requested:
-                 */
-                if (need_resched())
-                        return freed;
-        } while (jh != last_jh);
-
-        return freed;
-}
-
-/*
  * journal_clean_checkpoint_list
  *
  * Find all the written-back checkpoint buffers in the journal and release them.
  *
  * Called with the journal locked.
  * Called with j_list_lock held.
- * Returns number of buffers reaped (for debug)
+ * Returns number of bufers reaped (for debug)
  */
 
 int __journal_clean_checkpoint_list(journal_t *journal)
 {
         transaction_t *transaction, *last_transaction, *next_transaction;
-        int ret = 0, released;
+        int ret = 0;
 
         transaction = journal->j_checkpoint_transactions;
-        if (!transaction)
+        if (transaction == 0)
                 goto out;
 
         last_transaction = transaction->t_cpprev;
         next_transaction = transaction;
         do {
+                struct journal_head *jh;
+
                 transaction = next_transaction;
                 next_transaction = transaction->t_cpnext;
-                ret += journal_clean_one_cp_list(transaction->
-                                t_checkpoint_list, &released);
-                if (need_resched())
-                        goto out;
-                if (released)
-                        continue;
-                /*
-                 * It is essential that we are as careful as in the case of
-                 * t_checkpoint_list with removing the buffer from the list as
-                 * we can possibly see not yet submitted buffers on io_list
-                 */
-                ret += journal_clean_one_cp_list(transaction->
-                                t_checkpoint_io_list, &released);
-                if (need_resched())
-                        goto out;
+                jh = transaction->t_checkpoint_list;
+                if (jh) {
+                        struct journal_head *last_jh = jh->b_cpprev;
+                        struct journal_head *next_jh = jh;
+
+                        do {
+                                jh = next_jh;
+                                next_jh = jh->b_cpnext;
+                                /* Use trylock because of the ranknig */
+                                if (jbd_trylock_bh_state(jh2bh(jh)))
+                                        ret += __try_to_free_cp_buf(jh);
+                                /*
+                                 * This function only frees up some memory
+                                 * if possible so we dont have an obligation
+                                 * to finish processing. Bail out if preemption
+                                 * requested:
+                                 */
+                                if (need_resched())
+                                        goto out;
+                        } while (jh != last_jh);
+                }
         } while (transaction != last_transaction);
 out:
         return ret;
@@ -571,22 +516,18 @@ out:
  * buffer updates committed in that transaction have safely been stored
  * elsewhere on disk.  To achieve this, all of the buffers in a
  * transaction need to be maintained on the transaction's checkpoint
- * lists until they have been rewritten, at which point this function is
+ * list until they have been rewritten, at which point this function is
  * called to remove the buffer from the existing transaction's
- * checkpoint lists.
- *
- * The function returns 1 if it frees the transaction, 0 otherwise.
+ * checkpoint list.
  *
  * This function is called with the journal locked.
  * This function is called with j_list_lock held.
- * This function is called with jbd_lock_bh_state(jh2bh(jh))
  */
 
-int __journal_remove_checkpoint(struct journal_head *jh)
+void __journal_remove_checkpoint(struct journal_head *jh)
 {
         transaction_t *transaction;
         journal_t *journal;
-        int ret = 0;
 
         JBUFFER_TRACE(jh, "entry");
 
@@ -597,10 +538,8 @@ int __journal_remove_checkpoint(struct journal_head *jh)
         journal = transaction->t_journal;
 
         __buffer_unlink(jh);
-        jh->b_cp_transaction = NULL;
 
-        if (transaction->t_checkpoint_list != NULL ||
-            transaction->t_checkpoint_io_list != NULL)
+        if (transaction->t_checkpoint_list != NULL)
                 goto out;
         JBUFFER_TRACE(jh, "transaction has no more buffers");
 
@@ -626,10 +565,8 @@ int __journal_remove_checkpoint(struct journal_head *jh)
         /* Just in case anybody was waiting for more transactions to be
            checkpointed... */
         wake_up(&journal->j_wait_logspace);
-        ret = 1;
 out:
         JBUFFER_TRACE(jh, "exit");
-        return ret;
 }
 
 /*
@@ -691,7 +628,6 @@ void __journal_drop_transaction(journal_t *journal, transaction_t *transaction)
         J_ASSERT(transaction->t_shadow_list == NULL);
         J_ASSERT(transaction->t_log_list == NULL);
         J_ASSERT(transaction->t_checkpoint_list == NULL);
-        J_ASSERT(transaction->t_checkpoint_io_list == NULL);
         J_ASSERT(transaction->t_updates == 0);
         J_ASSERT(journal->j_committing_transaction != transaction);
         J_ASSERT(journal->j_running_transaction != transaction);
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 29e62d98bae6..002ad2bbc769 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -829,8 +829,7 @@ restart_loop:
         journal->j_committing_transaction = NULL;
         spin_unlock(&journal->j_state_lock);
 
-        if (commit_transaction->t_checkpoint_list == NULL &&
-            commit_transaction->t_checkpoint_io_list == NULL) {
+        if (commit_transaction->t_checkpoint_list == NULL) {
                 __journal_drop_transaction(journal, commit_transaction);
         } else {
                 if (journal->j_checkpoint_transactions == NULL) {
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 3eaf6e701087..da6354baa0b8 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -111,9 +111,10 @@ long nlmclnt_block(struct nlm_rqst *req, long timeout)
 /*
  * The server lockd has called us back to tell us the lock was granted
  */
-u32
-nlmclnt_grant(struct nlm_lock *lock)
+u32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *lock)
 {
+        const struct file_lock *fl = &lock->fl;
+        const struct nfs_fh *fh = &lock->fh;
         struct nlm_wait *block;
         u32 res = nlm_lck_denied;
 
@@ -122,14 +123,20 @@ nlmclnt_grant(struct nlm_lock *lock)
          * Warning: must not use cookie to match it!
          */
         list_for_each_entry(block, &nlm_blocked, b_list) {
-                if (nlm_compare_locks(block->b_lock, &lock->fl)) {
-                        /* Alright, we found a lock. Set the return status
-                         * and wake up the caller
-                         */
-                        block->b_status = NLM_LCK_GRANTED;
-                        wake_up(&block->b_wait);
-                        res = nlm_granted;
-                }
+                struct file_lock *fl_blocked = block->b_lock;
+
+                if (!nlm_compare_locks(fl_blocked, fl))
+                        continue;
+                if (!nlm_cmp_addr(&block->b_host->h_addr, addr))
+                        continue;
+                if (nfs_compare_fh(NFS_FH(fl_blocked->fl_file->f_dentry->d_inode) ,fh) != 0)
+                        continue;
+                /* Alright, we found a lock. Set the return status
+                 * and wake up the caller
+                 */
+                block->b_status = NLM_LCK_GRANTED;
+                wake_up(&block->b_wait);
+                res = nlm_granted;
         }
         return res;
 }
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 4063095d849e..b10f913aa06a 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -228,7 +228,7 @@ nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
         resp->cookie = argp->cookie;
 
         dprintk("lockd: GRANTED       called\n");
-        resp->status = nlmclnt_grant(&argp->lock);
+        resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
         dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
         return rpc_success;
 }
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 3bc437e0cf5b..35681d9cf1fc 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -256,7 +256,7 @@ nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
         resp->cookie = argp->cookie;
 
         dprintk("lockd: GRANTED       called\n");
-        resp->status = nlmclnt_grant(&argp->lock);
+        resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
         dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
         return rpc_success;
 }
diff --git a/include/asm-alpha/mman.h b/include/asm-alpha/mman.h
index f6439532a262..a21515c16a43 100644
--- a/include/asm-alpha/mman.h
+++ b/include/asm-alpha/mman.h
@@ -43,6 +43,8 @@
 #define MADV_SPACEAVAIL 5               /* ensure resources are available */
 #define MADV_DONTNEED   6               /* don't need these pages */
 #define MADV_REMOVE     7               /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-arm/mman.h b/include/asm-arm/mman.h
index f0bebca2ac21..693ed859e632 100644
--- a/include/asm-arm/mman.h
+++ b/include/asm-arm/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-arm26/mman.h b/include/asm-arm26/mman.h
index 0ed7780541fa..2096c50df888 100644
--- a/include/asm-arm26/mman.h
+++ b/include/asm-arm26/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-cris/mman.h b/include/asm-cris/mman.h
index 5a382b8bf3f7..deddfb239ff5 100644
--- a/include/asm-cris/mman.h
+++ b/include/asm-cris/mman.h
@@ -38,6 +38,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-frv/atomic.h b/include/asm-frv/atomic.h
index a59f684b4f33..5d9f84bfdcad 100644
--- a/include/asm-frv/atomic.h
+++ b/include/asm-frv/atomic.h
@@ -220,9 +220,9 @@ extern unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsig
         switch (sizeof(__xg_orig)) {                                            \
         case 4:                                                                 \
                 asm volatile(                                                   \
-                        "swap%I0 %2,%M0"                                        \
-                        : "+m"(*__xg_ptr), "=&r"(__xg_orig)                     \
-                        : "r"(x)                                                \
+                        "swap%I0 %M0,%1"                                        \
+                        : "+m"(*__xg_ptr), "=r"(__xg_orig)                      \
+                        : "1"(x)                                                \
                         : "memory"                                              \
                         );                                                      \
                 break;                                                          \
diff --git a/include/asm-frv/cacheflush.h b/include/asm-frv/cacheflush.h
index 3007deccb490..eaa5826bc1c8 100644
--- a/include/asm-frv/cacheflush.h
+++ b/include/asm-frv/cacheflush.h
@@ -87,5 +87,17 @@ static inline void flush_icache_page(struct vm_area_struct *vma, struct page *pa
         flush_icache_user_range(vma, page, page_to_phys(page), PAGE_SIZE);
 }
 
+/*
+ * permit ptrace to access another process's address space through the icache
+ * and the dcache
+ */
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)      \
+do {                                                            \
+        memcpy((dst), (src), (len));                            \
+        flush_icache_user_range((vma), (page), (vaddr), (len)); \
+} while(0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len)    \
+        memcpy((dst), (src), (len))
 
 #endif /* _ASM_CACHEFLUSH_H */
diff --git a/include/asm-frv/io.h b/include/asm-frv/io.h
index 075369b1a34b..01247cb2bc39 100644
--- a/include/asm-frv/io.h
+++ b/include/asm-frv/io.h
@@ -251,7 +251,6 @@ static inline void writel(uint32_t datum, volatile void __iomem *addr)
 #define IOMAP_WRITETHROUGH              3
 
 extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
-extern void __iounmap(void __iomem *addr, unsigned long size);
 
 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
 {
diff --git a/include/asm-frv/mman.h b/include/asm-frv/mman.h
index 8af4a41c255e..d3bca306da82 100644
--- a/include/asm-frv/mman.h
+++ b/include/asm-frv/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-frv/spr-regs.h b/include/asm-frv/spr-regs.h
index ef472f058d9c..c2a541ef828d 100644
--- a/include/asm-frv/spr-regs.h
+++ b/include/asm-frv/spr-regs.h
@@ -98,6 +98,7 @@
 #define TBR_TT_TRAP0            (0x80 << 4)
 #define TBR_TT_TRAP1            (0x81 << 4)
 #define TBR_TT_TRAP2            (0x82 << 4)
+#define TBR_TT_TRAP3            (0x83 << 4)
 #define TBR_TT_TRAP126          (0xfe << 4)
 #define TBR_TT_BREAK            (0xff << 4)
 
diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h
index d2aea70a5f64..f72ff0c4dc0b 100644
--- a/include/asm-frv/system.h
+++ b/include/asm-frv/system.h
@@ -40,8 +40,84 @@ do {									\
 
 /*
  * interrupt flag manipulation
+ * - use virtual interrupt management since touching the PSR is slow
+ *   - ICC2.Z: T if interrupts virtually disabled
+ *   - ICC2.C: F if interrupts really disabled
+ * - if Z==1 upon interrupt:
+ *   - C is set to 0
+ *   - interrupts are really disabled
+ *   - entry.S returns immediately
+ * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts
+ *   - if taken, the trap:
+ *     - sets ICC2.C
+ *     - enables interrupts
  */
-#define local_irq_disable()                             \
+#define local_irq_disable()                                     \
+do {                                                            \
+        /* set Z flag, but don't change the C flag */           \
+        asm volatile("  andcc   gr0,gr0,gr0,icc2        \n"     \
+                     :                                          \
+                     :                                          \
+                     : "memory", "icc2"                         \
+                     );                                         \
+} while(0)
+
+#define local_irq_enable()                                      \
+do {                                                            \
+        /* clear Z flag and then test the C flag */             \
+        asm volatile("  oricc   gr0,#1,gr0,icc2         \n"     \
+                     "  tihi    icc2,gr0,#2             \n"     \
+                     :                                          \
+                     :                                          \
+                     : "memory", "icc2"                         \
+                     );                                         \
+} while(0)
+
+#define local_save_flags(flags)                                 \
+do {                                                            \
+        typecheck(unsigned long, flags);                        \
+        asm volatile("movsg ccr,%0"                             \
+                     : "=r"(flags)                              \
+                     :                                          \
+                     : "memory");                               \
+                                                                \
+        /* shift ICC2.Z to bit 0 */                             \
+        flags >>= 26;                                           \
+                                                                \
+        /* make flags 1 if interrupts disabled, 0 otherwise */  \
+        flags &= 1UL;                                           \
+} while(0)
+
+#define irqs_disabled() \
+        ({unsigned long flags; local_save_flags(flags); flags; })
+
+#define local_irq_save(flags)                   \
+do {                                            \
+        typecheck(unsigned long, flags);        \
+        local_save_flags(flags);                \
+        local_irq_disable();                    \
+} while(0)
+
+#define local_irq_restore(flags)                                        \
+do {                                                                    \
+        typecheck(unsigned long, flags);                                \
+                                                                        \
+        /* load the Z flag by turning 1 if disabled into 0 if disabled  \
+         * and thus setting the Z flag but not the C flag */            \
+        asm volatile("  xoricc  %0,#1,gr0,icc2          \n"             \
+                     /* then test Z=0 and C=0 */                        \
+                     "  tihi    icc2,gr0,#2             \n"             \
+                     :                                                  \
+                     : "r"(flags)                                       \
+                     : "memory", "icc2"                                 \
+                     );                                                 \
+                                                                        \
+} while(0)
+
+/*
+ * real interrupt flag manipulation
+ */
+#define __local_irq_disable()                           \
 do {                                                    \
         unsigned long psr;                              \
         asm volatile("  movsg   psr,%0          \n"     \
@@ -53,7 +129,7 @@ do {							\
                      : "memory");                       \
 } while(0)
 
-#define local_irq_enable()                              \
+#define __local_irq_enable()                            \
 do {                                                    \
         unsigned long psr;                              \
         asm volatile("  movsg   psr,%0          \n"     \
@@ -64,7 +140,7 @@ do {							\
                      : "memory");                       \
 } while(0)
 
-#define local_save_flags(flags)                 \
+#define __local_save_flags(flags)               \
 do {                                            \
         typecheck(unsigned long, flags);        \
         asm("movsg psr,%0"                      \
@@ -73,7 +149,7 @@ do {						\
             : "memory");                        \
 } while(0)
 
-#define local_irq_save(flags)                           \
+#define __local_irq_save(flags)                         \
 do {                                                    \
         unsigned long npsr;                             \
         typecheck(unsigned long, flags);                \
@@ -86,7 +162,7 @@ do {							\
                      : "memory");                       \
 } while(0)
 
-#define local_irq_restore(flags)                        \
+#define __local_irq_restore(flags)                      \
 do {                                                    \
         typecheck(unsigned long, flags);                \
         asm volatile("  movgs   %0,psr          \n"     \
@@ -95,7 +171,7 @@ do {							\
                      : "memory");                       \
 } while(0)
 
-#define irqs_disabled() \
+#define __irqs_disabled() \
         ((__get_PSR() & PSR_PIL) >= PSR_PIL_14)
 
 /*
diff --git a/include/asm-frv/uaccess.h b/include/asm-frv/uaccess.h
index b6bcbe01f6ee..a1d140438863 100644
--- a/include/asm-frv/uaccess.h
+++ b/include/asm-frv/uaccess.h
@@ -306,7 +306,4 @@ extern long strnlen_user(const char *src, long count);
 
 extern unsigned long search_exception_table(unsigned long addr);
 
-#define copy_to_user_page(vma, page, vaddr, dst, src, len)      memcpy(dst, src, len)
-#define copy_from_user_page(vma, page, vaddr, dst, src, len)    memcpy(dst, src, len)
-
 #endif /* _ASM_UACCESS_H */
diff --git a/include/asm-frv/unistd.h b/include/asm-frv/unistd.h
index 4d994d2e99e3..322531caa484 100644
--- a/include/asm-frv/unistd.h
+++ b/include/asm-frv/unistd.h
@@ -295,13 +295,29 @@
 #define __NR_add_key            286
 #define __NR_request_key        287
 #define __NR_keyctl             288
-#define __NR_vperfctr_open      289
-#define __NR_vperfctr_control   (__NR_perfctr_info+1)
-#define __NR_vperfctr_unlink    (__NR_perfctr_info+2)
-#define __NR_vperfctr_iresume   (__NR_perfctr_info+3)
-#define __NR_vperfctr_read      (__NR_perfctr_info+4)
+#define __NR_ioprio_set         289
+#define __NR_ioprio_get         290
+#define __NR_inotify_init       291
+#define __NR_inotify_add_watch  292
+#define __NR_inotify_rm_watch   293
+#define __NR_migrate_pages      294
+#define __NR_openat             295
+#define __NR_mkdirat            296
+#define __NR_mknodat            297
+#define __NR_fchownat           298
+#define __NR_futimesat          299
+#define __NR_newfstatat         300
+#define __NR_unlinkat           301
+#define __NR_renameat           302
+#define __NR_linkat             303
+#define __NR_symlinkat          304
+#define __NR_readlinkat         305
+#define __NR_fchmodat           306
+#define __NR_faccessat          307
+#define __NR_pselect6           308
+#define __NR_ppoll              309
 
-#define NR_syscalls 294
+#define NR_syscalls 310
 
 /*
  * process the return value of a syscall, consigning it to one of two possible fates
diff --git a/include/asm-h8300/mman.h b/include/asm-h8300/mman.h
index 744a8fb485c2..ac0346f7d11d 100644
--- a/include/asm-h8300/mman.h
+++ b/include/asm-h8300/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-i386/mman.h b/include/asm-i386/mman.h
index ba4941e6f643..ab2339a1d807 100644
--- a/include/asm-i386/mman.h
+++ b/include/asm-i386/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h
index af503a122b23..aa958c6ee83e 100644
--- a/include/asm-i386/topology.h
+++ b/include/asm-i386/topology.h
@@ -27,7 +27,7 @@
 #ifndef _ASM_I386_TOPOLOGY_H
 #define _ASM_I386_TOPOLOGY_H
 
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
 #define topology_physical_package_id(cpu)                               \
         (phys_proc_id[cpu] == BAD_APICID ? -1 : phys_proc_id[cpu])
 #define topology_core_id(cpu)                                           \
diff --git a/include/asm-ia64/machvec_sn2.h b/include/asm-ia64/machvec_sn2.h
index e1b6cd63f49e..03d00faf03b5 100644
--- a/include/asm-ia64/machvec_sn2.h
+++ b/include/asm-ia64/machvec_sn2.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2002-2003, 2006 Silicon Graphics, Inc.  All Rights Reserved.
  * 
  * This program is free software; you can redistribute it and/or modify it 
  * under the terms of version 2 of the GNU General Public License 
@@ -20,11 +20,6 @@
  * License along with this program; if not, write the Free Software 
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  * 
- * Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 
- * Mountain View, CA  94043, or:
- * 
- * http://www.sgi.com 
- * 
  * For further information regarding this notice, see: 
  * 
  * http://oss.sgi.com/projects/GenInfo/NoticeExplan
diff --git a/include/asm-ia64/mman.h b/include/asm-ia64/mman.h
index 828beb24a20e..357ebb780cc0 100644
--- a/include/asm-ia64/mman.h
+++ b/include/asm-ia64/mman.h
@@ -44,6 +44,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h
index 1a3831c04af6..91c31be87b13 100644
--- a/include/asm-ia64/sn/arch.h
+++ b/include/asm-ia64/sn/arch.h
@@ -70,7 +70,7 @@ DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
  * Compact node ID to nasid mappings kept in the per-cpu data areas of each
  * cpu.
  */
-DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
+DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_COMPACT_NODES]);
 #define sn_cnodeid_to_nasid     (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
 
 
diff --git a/include/asm-ia64/sn/bte.h b/include/asm-ia64/sn/bte.h
index 01e5b4103235..5335d87ca5f8 100644
--- a/include/asm-ia64/sn/bte.h
+++ b/include/asm-ia64/sn/bte.h
@@ -46,7 +46,7 @@
 #define BTES_PER_NODE (is_shub2() ? 4 : 2)
 #define MAX_BTES_PER_NODE 4
 
-#define BTE2OFF_CTRL    (0)
+#define BTE2OFF_CTRL    0
 #define BTE2OFF_SRC     (SH2_BT_ENG_SRC_ADDR_0 - SH2_BT_ENG_CSR_0)
 #define BTE2OFF_DEST    (SH2_BT_ENG_DEST_ADDR_0 - SH2_BT_ENG_CSR_0)
 #define BTE2OFF_NOTIFY  (SH2_BT_ENG_NOTIF_ADDR_0 - SH2_BT_ENG_CSR_0)
@@ -75,11 +75,11 @@
                 : base + (BTEOFF_NOTIFY/8))
 
 /* Define hardware modes */
-#define BTE_NOTIFY (IBCT_NOTIFY)
+#define BTE_NOTIFY IBCT_NOTIFY
 #define BTE_NORMAL BTE_NOTIFY
 #define BTE_ZERO_FILL (BTE_NOTIFY | IBCT_ZFIL_MODE)
 /* Use a reserved bit to let the caller specify a wait for any BTE */
-#define BTE_WACQUIRE (0x4000)
+#define BTE_WACQUIRE 0x4000
 /* Use the BTE on the node with the destination memory */
 #define BTE_USE_DEST (BTE_WACQUIRE << 1)
 /* Use any available BTE interface on any node for the transfer */
diff --git a/include/asm-ia64/sn/pcibr_provider.h b/include/asm-ia64/sn/pcibr_provider.h
index 9334078b089a..a601d3af39b6 100644
--- a/include/asm-ia64/sn/pcibr_provider.h
+++ b/include/asm-ia64/sn/pcibr_provider.h
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1992-1997,2000-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 1992-1997,2000-2006 Silicon Graphics, Inc. All rights reserved.
  */
 #ifndef _ASM_IA64_SN_PCI_PCIBR_PROVIDER_H
 #define _ASM_IA64_SN_PCI_PCIBR_PROVIDER_H
@@ -115,18 +115,6 @@ struct pcibus_info {
         spinlock_t              pbi_lock;
 };
 
-/*
- * pcibus_info structure locking macros
- */
-inline static unsigned long
-pcibr_lock(struct pcibus_info *pcibus_info)
-{
-        unsigned long flag;
-        spin_lock_irqsave(&pcibus_info->pbi_lock, flag);
-        return(flag);
-}
-#define pcibr_unlock(pcibus_info, flag)  spin_unlock_irqrestore(&pcibus_info->pbi_lock, flag)
-
 extern int  pcibr_init_provider(void);
 extern void *pcibr_bus_fixup(struct pcibus_bussoft *, struct pci_controller *);
 extern dma_addr_t pcibr_dma_map(struct pci_dev *, unsigned long, size_t);
diff --git a/include/asm-ia64/sn/sn_feature_sets.h b/include/asm-ia64/sn/sn_feature_sets.h
index 9ca642cad338..ff33e3bd3f8e 100644
--- a/include/asm-ia64/sn/sn_feature_sets.h
+++ b/include/asm-ia64/sn/sn_feature_sets.h
@@ -12,9 +12,6 @@
  */
 
 
-#include <asm/types.h>
-#include <asm/bitops.h>
-
 /* --------------------- PROM Features -----------------------------*/
 extern int sn_prom_feature_available(int id);
 
diff --git a/include/asm-ia64/sn/xpc.h b/include/asm-ia64/sn/xpc.h
index 0c36928ffd8b..df7f5f4f3cde 100644
--- a/include/asm-ia64/sn/xpc.h
+++ b/include/asm-ia64/sn/xpc.h
@@ -508,19 +508,24 @@ struct xpc_channel {
 #define XPC_C_OPENREQUEST       0x00000010 /* local open channel request */
 
 #define XPC_C_SETUP             0x00000020 /* channel's msgqueues are alloc'd */
-#define XPC_C_CONNECTCALLOUT    0x00000040 /* channel connected callout made */
-#define XPC_C_CONNECTED         0x00000080 /* local channel is connected */
-#define XPC_C_CONNECTING        0x00000100 /* channel is being connected */
-
-#define XPC_C_RCLOSEREPLY       0x00000200 /* remote close channel reply */
-#define XPC_C_CLOSEREPLY        0x00000400 /* local close channel reply */
-#define XPC_C_RCLOSEREQUEST     0x00000800 /* remote close channel request */
-#define XPC_C_CLOSEREQUEST      0x00001000 /* local close channel request */
-
-#define XPC_C_DISCONNECTED      0x00002000 /* channel is disconnected */
-#define XPC_C_DISCONNECTING     0x00004000 /* channel is being disconnected */
-#define XPC_C_DISCONNECTCALLOUT 0x00008000 /* chan disconnected callout made */
-#define XPC_C_WDISCONNECT       0x00010000 /* waiting for channel disconnect */
+#define XPC_C_CONNECTEDCALLOUT  0x00000040 /* connected callout initiated */
+#define XPC_C_CONNECTEDCALLOUT_MADE \
+                                0x00000080 /* connected callout completed */
+#define XPC_C_CONNECTED         0x00000100 /* local channel is connected */
+#define XPC_C_CONNECTING        0x00000200 /* channel is being connected */
+
+#define XPC_C_RCLOSEREPLY       0x00000400 /* remote close channel reply */
+#define XPC_C_CLOSEREPLY        0x00000800 /* local close channel reply */
+#define XPC_C_RCLOSEREQUEST     0x00001000 /* remote close channel request */
+#define XPC_C_CLOSEREQUEST      0x00002000 /* local close channel request */
+
+#define XPC_C_DISCONNECTED      0x00004000 /* channel is disconnected */
+#define XPC_C_DISCONNECTING     0x00008000 /* channel is being disconnected */
+#define XPC_C_DISCONNECTINGCALLOUT \
+                                0x00010000 /* disconnecting callout initiated */
+#define XPC_C_DISCONNECTINGCALLOUT_MADE \
+                                0x00020000 /* disconnecting callout completed */
+#define XPC_C_WDISCONNECT       0x00040000 /* waiting for channel disconnect */
 
 
 
diff --git a/include/asm-ia64/timex.h b/include/asm-ia64/timex.h
index 414aae060440..05a6baf8a472 100644
--- a/include/asm-ia64/timex.h
+++ b/include/asm-ia64/timex.h
@@ -15,6 +15,8 @@
 
 typedef unsigned long cycles_t;
 
+extern void (*ia64_udelay)(unsigned long usecs);
+
 /*
  * For performance reasons, we don't want to define CLOCK_TICK_TRATE as
  * local_cpu_data->itc_rate.  Fortunately, we don't have to, either: according to George
diff --git a/include/asm-m32r/mman.h b/include/asm-m32r/mman.h
index 12e29747bc84..6b02fe3fcff2 100644
--- a/include/asm-m32r/mman.h
+++ b/include/asm-m32r/mman.h
@@ -38,6 +38,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-m68k/mman.h b/include/asm-m68k/mman.h
index ea262ab88b3b..efd12bc4ccb7 100644
--- a/include/asm-m68k/mman.h
+++ b/include/asm-m68k/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-mips/cpu.h b/include/asm-mips/cpu.h
index 934e063e79f1..818b9a97e214 100644
--- a/include/asm-mips/cpu.h
+++ b/include/asm-mips/cpu.h
@@ -204,9 +204,9 @@
  */
 #define MIPS_CPU_ISA_I          0x00000001
 #define MIPS_CPU_ISA_II         0x00000002
-#define MIPS_CPU_ISA_III        0x00000003
-#define MIPS_CPU_ISA_IV         0x00000004
-#define MIPS_CPU_ISA_V          0x00000005
+#define MIPS_CPU_ISA_III        0x00000004
+#define MIPS_CPU_ISA_IV         0x00000008
+#define MIPS_CPU_ISA_V          0x00000010
 #define MIPS_CPU_ISA_M32R1      0x00000020
 #define MIPS_CPU_ISA_M32R2      0x00000040
 #define MIPS_CPU_ISA_M64R1      0x00000080
diff --git a/include/asm-mips/gcc/sgidefs.h b/include/asm-mips/gcc/sgidefs.h
deleted file mode 100644
index 05994371a2af..000000000000
--- a/include/asm-mips/gcc/sgidefs.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * include/sgidefs.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1996 by Ralf Baechle
- *
- * This file is here to satisfy GCC's expectations.
- */
-#ifndef __SGIDEFS_H
-#define __SGIDEFS_H
-
-#include <asm/sgidefs.h>
-
-#endif /* __SGIDEFS_H */
diff --git a/include/asm-mips/mach-generic/timex.h b/include/asm-mips/mach-generic/timex.h
index c6a2e5f0574a..48b4cfaa0d50 100644
--- a/include/asm-mips/mach-generic/timex.h
+++ b/include/asm-mips/mach-generic/timex.h
@@ -3,20 +3,11 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2003 by Ralf Baechle
+ * Copyright (C) 2003, 2005 by Ralf Baechle
  */
 #ifndef __ASM_MACH_GENERIC_TIMEX_H
 #define __ASM_MACH_GENERIC_TIMEX_H
 
-#include <linux/config.h>
-
-/*
- * Last remaining user of the i8254 PIC, will be converted, too ...
- */
-#ifdef CONFIG_SNI_RM200_PCI
-#define CLOCK_TICK_RATE         1193182
-#else
 #define CLOCK_TICK_RATE         500000
-#endif
 
 #endif /* __ASM_MACH_GENERIC_TIMEX_H */
diff --git a/include/asm-mips/mach-rm200/timex.h b/include/asm-mips/mach-rm200/timex.h
new file mode 100644
index 000000000000..11ff6cb0f214
--- /dev/null
+++ b/include/asm-mips/mach-rm200/timex.h
@@ -0,0 +1,13 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003, 2005 by Ralf Baechle
+ */
+#ifndef __ASM_MACH_RM200_TIMEX_H
+#define __ASM_MACH_RM200_TIMEX_H
+
+#define CLOCK_TICK_RATE         1193182
+
+#endif /* __ASM_MACH_RM200_TIMEX_H */
diff --git a/include/asm-mips/mman.h b/include/asm-mips/mman.h
index dd17c8bd62a1..6d01e26830fa 100644
--- a/include/asm-mips/mman.h
+++ b/include/asm-mips/mman.h
@@ -66,6 +66,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON       MAP_ANONYMOUS
diff --git a/include/asm-mips/r4kcache.h b/include/asm-mips/r4kcache.h
index cc53196efa40..9632c27dad15 100644
--- a/include/asm-mips/r4kcache.h
+++ b/include/asm-mips/r4kcache.h
@@ -14,6 +14,7 @@
 
 #include <asm/asm.h>
 #include <asm/cacheops.h>
+#include <asm/cpu-features.h>
 
 /*
  * This macro return a properly sign-extended address suitable as base address
@@ -78,22 +79,25 @@ static inline void flush_scache_line(unsigned long addr)
         cache_op(Hit_Writeback_Inv_SD, addr);
 }
 
+#define protected_cache_op(op,addr)                             \
+        __asm__ __volatile__(                                   \
+        "       .set    push                    \n"             \
+        "       .set    noreorder               \n"             \
+        "       .set    mips3                   \n"             \
+        "1:     cache   %0, (%1)                \n"             \
+        "2:     .set    pop                     \n"             \
+        "       .section __ex_table,\"a\"       \n"             \
+        "       "STR(PTR)" 1b, 2b               \n"             \
+        "       .previous"                                      \
+        :                                                       \
+        : "i" (op), "r" (addr))
+
 /*
  * The next two are for badland addresses like signal trampolines.
  */
 static inline void protected_flush_icache_line(unsigned long addr)
 {
-        __asm__ __volatile__(
-                "       .set    push                    \n"
-                "       .set    noreorder               \n"
-                "       .set    mips3                   \n"
-                "1:     cache   %0, (%1)                \n"
-                "2:     .set    pop                     \n"
-                "       .section __ex_table,\"a\"       \n"
-                "       "STR(PTR)" 1b, 2b               \n"
-                "       .previous"
-                :
-                : "i" (Hit_Invalidate_I), "r" (addr));
+        protected_cache_op(Hit_Invalidate_I, addr);
 }
 
 /*
@@ -104,32 +108,12 @@ static inline void protected_flush_icache_line(unsigned long addr)
  */
 static inline void protected_writeback_dcache_line(unsigned long addr)
 {
-        __asm__ __volatile__(
-                "       .set    push                    \n"
-                "       .set    noreorder               \n"
-                "       .set    mips3                   \n"
-                "1:     cache   %0, (%1)                \n"
-                "2:     .set    pop                     \n"
-                "       .section __ex_table,\"a\"       \n"
-                "       "STR(PTR)" 1b, 2b               \n"
-                "       .previous"
-                :
-                : "i" (Hit_Writeback_Inv_D), "r" (addr));
+        protected_cache_op(Hit_Writeback_Inv_D, addr);
 }
 
 static inline void protected_writeback_scache_line(unsigned long addr)
 {
-        __asm__ __volatile__(
-                "       .set    push                    \n"
-                "       .set    noreorder               \n"
-                "       .set    mips3                   \n"
-                "1:     cache   %0, (%1)                \n"
-                "2:     .set    pop                     \n"
-                "       .section __ex_table,\"a\"       \n"
-                "       "STR(PTR)" 1b, 2b               \n"
-                "       .previous"
-                :
-                : "i" (Hit_Writeback_Inv_SD), "r" (addr));
+        protected_cache_op(Hit_Writeback_Inv_SD, addr);
 }
 
 /*
@@ -295,4 +279,28 @@ __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64)
 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128)
 
+/* build blast_xxx_range, protected_blast_xxx_range */
+#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot) \
+static inline void prot##blast_##pfx##cache##_range(unsigned long start, \
+                                                    unsigned long end)  \
+{                                                                       \
+        unsigned long lsize = cpu_##desc##_line_size();                 \
+        unsigned long addr = start & ~(lsize - 1);                      \
+        unsigned long aend = (end - 1) & ~(lsize - 1);                  \
+        while (1) {                                                     \
+                prot##cache_op(hitop, addr);                            \
+                if (addr == aend)                                       \
+                        break;                                          \
+                addr += lsize;                                          \
+        }                                                               \
+}
+
+__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_)
+__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_)
+__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_)
+__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, )
+__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, )
+/* blast_inv_dcache_range */
+__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, )
+
 #endif /* _ASM_R4KCACHE_H */
diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h
index 91d813a37823..7a553e9d44d3 100644
--- a/include/asm-mips/uaccess.h
+++ b/include/asm-mips/uaccess.h
@@ -266,6 +266,8 @@ do {									\
  */
 #define __get_user_asm_ll32(val, addr)                                  \
 {                                                                       \
+        unsigned long long __gu_tmp;                                    \
+                                                                        \
         __asm__ __volatile__(                                           \
         "1:     lw      %1, (%3)                                \n"     \
         "2:     lw      %D1, 4(%3)                              \n"     \
@@ -280,8 +282,9 @@ do {									\
         "       " __UA_ADDR "   1b, 4b                          \n"     \
         "       " __UA_ADDR "   2b, 4b                          \n"     \
         "       .previous                                       \n"     \
-        : "=r" (__gu_err), "=&r" (val)                                  \
+        : "=r" (__gu_err), "=&r" (__gu_tmp)                             \
         : "0" (0), "r" (addr), "i" (-EFAULT));                          \
+        (val) = __gu_tmp;                                               \
 }
 
 /*
diff --git a/include/asm-mips/unistd.h b/include/asm-mips/unistd.h
index e7ff9b187783..769305d20108 100644
--- a/include/asm-mips/unistd.h
+++ b/include/asm-mips/unistd.h
@@ -1184,10 +1184,8 @@ type name (atype a,btype b,ctype c,dtype d,etype e,ftype f) \
 #define __ARCH_WANT_SYS_SIGPENDING
 #define __ARCH_WANT_SYS_SIGPROCMASK
 #define __ARCH_WANT_SYS_RT_SIGACTION
-# ifndef __mips64
-#  define __ARCH_WANT_STAT64
-# endif
 # ifdef CONFIG_32BIT
+#  define __ARCH_WANT_STAT64
 #  define __ARCH_WANT_SYS_TIME
 # endif
 # ifdef CONFIG_MIPS32_O32
diff --git a/include/asm-parisc/mman.h b/include/asm-parisc/mman.h
index 736b0abcac05..a381cf5c8f55 100644
--- a/include/asm-parisc/mman.h
+++ b/include/asm-parisc/mman.h
@@ -49,6 +49,8 @@
 #define MADV_4M_PAGES   22              /* Use 4 Megabyte pages */
 #define MADV_16M_PAGES  24              /* Use 16 Megabyte pages */
 #define MADV_64M_PAGES  26              /* Use 64 Megabyte pages */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-powerpc/mman.h b/include/asm-powerpc/mman.h
index a2e34c21b44f..fcff25d13f13 100644
--- a/include/asm-powerpc/mman.h
+++ b/include/asm-powerpc/mman.h
@@ -45,6 +45,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-s390/mman.h b/include/asm-s390/mman.h
index c8d5409b5d56..d41ca1477010 100644
--- a/include/asm-s390/mman.h
+++ b/include/asm-s390/mman.h
@@ -44,6 +44,8 @@
 #define MADV_WILLNEED  0x3              /* pre-fault pages */
 #define MADV_DONTNEED  0x4              /* discard these pages */
 #define MADV_REMOVE    0x5              /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-sh/mman.h b/include/asm-sh/mman.h
index 693bd55a3710..0e08d0573abc 100644
--- a/include/asm-sh/mman.h
+++ b/include/asm-sh/mman.h
@@ -36,6 +36,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-sparc/mman.h b/include/asm-sparc/mman.h
index 98435ad8619e..4a298b2be859 100644
--- a/include/asm-sparc/mman.h
+++ b/include/asm-sparc/mman.h
@@ -55,6 +55,8 @@
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_FREE       0x5             /* (Solaris) contents can be freed */
 #define MADV_REMOVE     0x6             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-sparc64/mman.h b/include/asm-sparc64/mman.h
index cb4b6156194d..d705ec92da8b 100644
--- a/include/asm-sparc64/mman.h
+++ b/include/asm-sparc64/mman.h
@@ -55,6 +55,8 @@
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_FREE       0x5             /* (Solaris) contents can be freed */
 #define MADV_REMOVE     0x6             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-v850/mman.h b/include/asm-v850/mman.h
index edc79965193a..7b851c310e41 100644
--- a/include/asm-v850/mman.h
+++ b/include/asm-v850/mman.h
@@ -33,6 +33,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-x86_64/mman.h b/include/asm-x86_64/mman.h
index d0e97b74f735..b699a38c1c3c 100644
--- a/include/asm-x86_64/mman.h
+++ b/include/asm-x86_64/mman.h
@@ -37,6 +37,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON        MAP_ANONYMOUS
diff --git a/include/asm-xtensa/mman.h b/include/asm-xtensa/mman.h
index 082a7504925e..e2d7afb679c8 100644
--- a/include/asm-xtensa/mman.h
+++ b/include/asm-xtensa/mman.h
@@ -73,6 +73,8 @@
 #define MADV_WILLNEED   0x3             /* pre-fault pages */
 #define MADV_DONTNEED   0x4             /* discard these pages */
 #define MADV_REMOVE     0x5             /* remove these pages & resources */
+#define MADV_DONTFORK   0x30            /* dont inherit across fork */
+#define MADV_DOFORK     0x31            /* do inherit across fork */
 
 /* compatibility flags */
 #define MAP_ANON       MAP_ANONYMOUS
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 0fe4aa891ddc..41ee79962bb2 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -498,12 +498,6 @@ struct transaction_s
         struct journal_head     *t_checkpoint_list;
 
         /*
-         * Doubly-linked circular list of all buffers submitted for IO while
-         * checkpointing. [j_list_lock]
-         */
-        struct journal_head     *t_checkpoint_io_list;
-
-        /*
          * Doubly-linked circular list of temporary buffers currently undergoing
          * IO in the log [j_list_lock]
          */
@@ -852,7 +846,7 @@ extern void journal_commit_transaction(journal_t *);
 
 /* Checkpoint list management */
 int __journal_clean_checkpoint_list(journal_t *journal);
-int __journal_remove_checkpoint(struct journal_head *);
+void __journal_remove_checkpoint(struct journal_head *);
 void __journal_insert_checkpoint(struct journal_head *, transaction_t *);
 
 /* Buffer IO */
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 920766cea79c..ef21ed296039 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -149,7 +149,7 @@ struct nlm_rqst * nlmclnt_alloc_call(void);
 int               nlmclnt_prepare_block(struct nlm_rqst *req, struct nlm_host *host, struct file_lock *fl);
 void              nlmclnt_finish_block(struct nlm_rqst *req);
 long              nlmclnt_block(struct nlm_rqst *req, long timeout);
-u32               nlmclnt_grant(struct nlm_lock *);
+u32               nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *);
 void              nlmclnt_recovery(struct nlm_host *, u32);
 int               nlmclnt_reclaim(struct nlm_host *, struct file_lock *);
 int               nlmclnt_setgrantargs(struct nlm_rqst *, struct nlm_lock *);
@@ -204,7 +204,7 @@ nlmsvc_file_inode(struct nlm_file *file)
  * Compare two host addresses (needs modifying for ipv6)
  */
 static __inline__ int
-nlm_cmp_addr(struct sockaddr_in *sin1, struct sockaddr_in *sin2)
+nlm_cmp_addr(const struct sockaddr_in *sin1, const struct sockaddr_in *sin2)
 {
         return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
 }
@@ -214,7 +214,7 @@ nlm_cmp_addr(struct sockaddr_in *sin1, struct sockaddr_in *sin2)
  * When the second lock is of type F_UNLCK, this acts like a wildcard.
  */
 static __inline__ int
-nlm_compare_locks(struct file_lock *fl1, struct file_lock *fl2)
+nlm_compare_locks(const struct file_lock *fl1, const struct file_lock *fl2)
 {
         return  fl1->fl_pid   == fl2->fl_pid
              && fl1->fl_start == fl2->fl_start
diff --git a/include/linux/netfilter_ipv4.h b/include/linux/netfilter_ipv4.h
index fdc4a9527343..43c09d790b83 100644
--- a/include/linux/netfilter_ipv4.h
+++ b/include/linux/netfilter_ipv4.h
@@ -79,7 +79,7 @@ enum nf_ip_hook_priorities {
 
 #ifdef __KERNEL__
 extern int ip_route_me_harder(struct sk_buff **pskb);
-
+extern int ip_xfrm_me_harder(struct sk_buff **pskb);
 #endif /*__KERNEL__*/
 
 #endif /*__LINUX_IP_NETFILTER_H*/
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 9d5cd106b344..0d36750fc0f1 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -84,6 +84,7 @@ extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __us
 extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len);
 extern int ptrace_attach(struct task_struct *tsk);
 extern int ptrace_detach(struct task_struct *, unsigned int);
+extern void __ptrace_detach(struct task_struct *, unsigned int);
 extern void ptrace_disable(struct task_struct *);
 extern int ptrace_check_attach(struct task_struct *task, int kill);
 extern int ptrace_request(struct task_struct *child, long request, long addr, long data);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9c1da0269a18..b6f51e3a38ec 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -697,12 +697,9 @@ struct task_struct {
 
         int lock_depth;         /* BKL lock depth */
 
-#if defined(CONFIG_SMP)
-        int last_waker_cpu;     /* CPU that last woke this task up */
-#if defined(__ARCH_WANT_UNLOCKED_CTXSW)
+#if defined(CONFIG_SMP) && defined(__ARCH_WANT_UNLOCKED_CTXSW)
         int oncpu;
 #endif
-#endif
         int prio, static_prio;
         struct list_head run_list;
         prio_array_t *array;
diff --git a/kernel/fork.c b/kernel/fork.c
index 8e88b374cee9..fbea12d7a943 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1123,8 +1123,8 @@ static task_t *copy_process(unsigned long clone_flags,
                 p->real_parent = current;
         p->parent = p->real_parent;
 
+        spin_lock(&current->sighand->siglock);
         if (clone_flags & CLONE_THREAD) {
-                spin_lock(&current->sighand->siglock);
                 /*
                  * Important: if an exit-all has been started then
                  * do not create this new thread - the whole thread
@@ -1162,8 +1162,6 @@ static task_t *copy_process(unsigned long clone_flags,
                          */
                         p->it_prof_expires = jiffies_to_cputime(1);
                 }
-
-                spin_unlock(&current->sighand->siglock);
         }
 
         /*
@@ -1175,8 +1173,6 @@ static task_t *copy_process(unsigned long clone_flags,
         if (unlikely(p->ptrace & PT_PTRACED))
                 __ptrace_link(p, current->parent);
 
-        attach_pid(p, PIDTYPE_PID, p->pid);
-        attach_pid(p, PIDTYPE_TGID, p->tgid);
         if (thread_group_leader(p)) {
                 p->signal->tty = current->signal->tty;
                 p->signal->pgrp = process_group(current);
@@ -1186,9 +1182,12 @@ static task_t *copy_process(unsigned long clone_flags,
                 if (p->pid)
                         __get_cpu_var(process_counts)++;
         }
+        attach_pid(p, PIDTYPE_TGID, p->tgid);
+        attach_pid(p, PIDTYPE_PID, p->pid);
 
         nr_threads++;
         total_forks++;
+        spin_unlock(&current->sighand->siglock);
         write_unlock_irq(&tasklist_lock);
         proc_fork_connector(p);
         return p;
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 2b6e1757aedd..5ae51f1bc7c8 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -418,8 +418,19 @@ hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)
         /* Switch the timer base, if necessary: */
         new_base = switch_hrtimer_base(timer, base);
 
-        if (mode == HRTIMER_REL)
+        if (mode == HRTIMER_REL) {
                 tim = ktime_add(tim, new_base->get_time());
+                /*
+                 * CONFIG_TIME_LOW_RES is a temporary way for architectures
+                 * to signal that they simply return xtime in
+                 * do_gettimeoffset(). In this case we want to round up by
+                 * resolution when starting a relative timer, to avoid short
+                 * timeouts. This will go away with the GTOD framework.
+                 */
+#ifdef CONFIG_TIME_LOW_RES
+                tim = ktime_add(tim, base->resolution);
+#endif
+        }
         timer->expires = tim;
 
         enqueue_hrtimer(timer, new_base);
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 5f33cdb6fff5..d95a72c9279d 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -72,8 +72,8 @@ void ptrace_untrace(task_t *child)
  */
 void __ptrace_unlink(task_t *child)
 {
-        if (!child->ptrace)
-                BUG();
+        BUG_ON(!child->ptrace);
+
         child->ptrace = 0;
         if (!list_empty(&child->ptrace_list)) {
                 list_del_init(&child->ptrace_list);
@@ -184,22 +184,27 @@ bad:
         return retval;
 }
 
+void __ptrace_detach(struct task_struct *child, unsigned int data)
+{
+        child->exit_code = data;
+        /* .. re-parent .. */
+        __ptrace_unlink(child);
+        /* .. and wake it up. */
+        if (child->exit_state != EXIT_ZOMBIE)
+                wake_up_process(child);
+}
+
 int ptrace_detach(struct task_struct *child, unsigned int data)
 {
         if (!valid_signal(data))
-                return  -EIO;
+                return -EIO;
 
         /* Architecture-specific hardware disable .. */
         ptrace_disable(child);
 
-        /* .. re-parent .. */
-        child->exit_code = data;
-
         write_lock_irq(&tasklist_lock);
-        __ptrace_unlink(child);
-        /* .. and wake it up. */
-        if (child->exit_state != EXIT_ZOMBIE)
-                wake_up_process(child);
+        if (child->ptrace)
+                __ptrace_detach(child, data);
         write_unlock_irq(&tasklist_lock);
 
         return 0;
@@ -242,8 +247,7 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
                 if (write) {
                         copy_to_user_page(vma, page, addr,
                                           maddr + offset, buf, bytes);
-                        if (!PageCompound(page))
-                                set_page_dirty_lock(page);
+                        set_page_dirty_lock(page);
                 } else {
                         copy_from_user_page(vma, page, addr,
                                             buf, maddr + offset, bytes);
diff --git a/kernel/sched.c b/kernel/sched.c
index 87d93be336a1..66d957227de9 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1204,9 +1204,6 @@ static int try_to_wake_up(task_t *p, unsigned int state, int sync)
                 }
         }
 
-        if (p->last_waker_cpu != this_cpu)
-                goto out_set_cpu;
-
         if (unlikely(!cpu_isset(this_cpu, p->cpus_allowed)))
                 goto out_set_cpu;
 
@@ -1277,8 +1274,6 @@ out_set_cpu:
                 cpu = task_cpu(p);
         }
 
-        p->last_waker_cpu = this_cpu;
-
 out_activate:
 #endif /* CONFIG_SMP */
         if (old_state == TASK_UNINTERRUPTIBLE) {
@@ -1360,12 +1355,9 @@ void fastcall sched_fork(task_t *p, int clone_flags)
 #ifdef CONFIG_SCHEDSTATS
         memset(&p->sched_info, 0, sizeof(p->sched_info));
 #endif
-#if defined(CONFIG_SMP)
-        p->last_waker_cpu = cpu;
-#if defined(__ARCH_WANT_UNLOCKED_CTXSW)
+#if defined(CONFIG_SMP) && defined(__ARCH_WANT_UNLOCKED_CTXSW)
         p->oncpu = 0;
 #endif
-#endif
 #ifdef CONFIG_PREEMPT
         /* Want to start with kernel preemption disabled. */
         task_thread_info(p)->preempt_count = 1;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 67f29516662a..508707704d2c 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -85,7 +85,7 @@ void free_huge_page(struct page *page)
         BUG_ON(page_count(page));
 
         INIT_LIST_HEAD(&page->lru);
-        page[1].mapping = NULL;
+        page[1].lru.next = NULL;                        /* reset dtor */
 
         spin_lock(&hugetlb_lock);
         enqueue_huge_page(page);
@@ -105,7 +105,7 @@ struct page *alloc_huge_page(struct vm_area_struct *vma, unsigned long addr)
         }
         spin_unlock(&hugetlb_lock);
         set_page_count(page, 1);
-        page[1].mapping = (void *)free_huge_page;
+        page[1].lru.next = (void *)free_huge_page;      /* set dtor */
         for (i = 0; i < (HPAGE_SIZE/PAGE_SIZE); ++i)
                 clear_user_highpage(&page[i], addr);
         return page;
diff --git a/mm/madvise.c b/mm/madvise.c
index ae0ae3ea299a..af3d573b0141 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -22,16 +22,23 @@ static long madvise_behavior(struct vm_area_struct * vma,
         struct mm_struct * mm = vma->vm_mm;
         int error = 0;
         pgoff_t pgoff;
-        int new_flags = vma->vm_flags & ~VM_READHINTMASK;
+        int new_flags = vma->vm_flags;
 
         switch (behavior) {
+        case MADV_NORMAL:
+                new_flags = new_flags & ~VM_RAND_READ & ~VM_SEQ_READ;
+                break;
         case MADV_SEQUENTIAL:
-                new_flags |= VM_SEQ_READ;
+                new_flags = (new_flags & ~VM_RAND_READ) | VM_SEQ_READ;
                 break;
         case MADV_RANDOM:
-                new_flags |= VM_RAND_READ;
+                new_flags = (new_flags & ~VM_SEQ_READ) | VM_RAND_READ;
                 break;
-        default:
+        case MADV_DONTFORK:
+                new_flags |= VM_DONTCOPY;
+                break;
+        case MADV_DOFORK:
+                new_flags &= ~VM_DONTCOPY;
                 break;
         }
 
@@ -177,6 +184,12 @@ madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev,
         long error;
 
         switch (behavior) {
+        case MADV_DOFORK:
+                if (vma->vm_flags & VM_IO) {
+                        error = -EINVAL;
+                        break;
+                }
+        case MADV_DONTFORK:
         case MADV_NORMAL:
         case MADV_SEQUENTIAL:
         case MADV_RANDOM:
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index dde04ff4be31..62c122528587 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -56,6 +56,7 @@ long nr_swap_pages;
 int percpu_pagelist_fraction;
 
 static void fastcall free_hot_cold_page(struct page *page, int cold);
+static void __free_pages_ok(struct page *page, unsigned int order);
 
 /*
  * results with 256, 32 in the lowmem_reserve sysctl:
@@ -169,20 +170,23 @@ static void bad_page(struct page *page)
  * All pages have PG_compound set.  All pages have their ->private pointing at
  * the head page (even the head page has this).
  *
- * The first tail page's ->mapping, if non-zero, holds the address of the
- * compound page's put_page() function.
- *
- * The order of the allocation is stored in the first tail page's ->index
- * This is only for debug at present.  This usage means that zero-order pages
- * may not be compound.
+ * The first tail page's ->lru.next holds the address of the compound page's
+ * put_page() function.  Its ->lru.prev holds the order of allocation.
+ * This usage means that zero-order pages may not be compound.
  */
+
+static void free_compound_page(struct page *page)
+{
+        __free_pages_ok(page, (unsigned long)page[1].lru.prev);
+}
+
 static void prep_compound_page(struct page *page, unsigned long order)
 {
         int i;
         int nr_pages = 1 << order;
 
-        page[1].mapping = NULL;
-        page[1].index = order;
+        page[1].lru.next = (void *)free_compound_page;  /* set dtor */
+        page[1].lru.prev = (void *)order;
         for (i = 0; i < nr_pages; i++) {
                 struct page *p = page + i;
 
@@ -196,7 +200,7 @@ static void destroy_compound_page(struct page *page, unsigned long order)
         int i;
         int nr_pages = 1 << order;
 
-        if (unlikely(page[1].index != order))
+        if (unlikely((unsigned long)page[1].lru.prev != order))
                 bad_page(page);
 
         for (i = 0; i < nr_pages; i++) {
diff --git a/mm/swap.c b/mm/swap.c
index 76247424dea1..cce3dda59c59 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -40,7 +40,7 @@ static void put_compound_page(struct page *page)
         if (put_page_testzero(page)) {
                 void (*dtor)(struct page *page);
 
-                dtor = (void (*)(struct page *))page[1].mapping;
+                dtor = (void (*)(struct page *))page[1].lru.next;
                 (*dtor)(page);
         }
 }
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index cc047f7fb6ef..35cf3a074087 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -67,7 +67,7 @@ void br_stp_disable_bridge(struct net_bridge *br)
 {
         struct net_bridge_port *p;
 
-        spin_lock(&br->lock);
+        spin_lock_bh(&br->lock);
         list_for_each_entry(p, &br->port_list, list) {
                 if (p->state != BR_STATE_DISABLED)
                         br_stp_disable_port(p);
@@ -76,7 +76,7 @@ void br_stp_disable_bridge(struct net_bridge *br)
 
         br->topology_change = 0;
         br->topology_change_detected = 0;
-        spin_unlock(&br->lock);
+        spin_unlock_bh(&br->lock);
 
         del_timer_sync(&br->hello_timer);
         del_timer_sync(&br->topology_change_timer);
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index 52a3d7c57907..ed42cdc57cd9 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -78,6 +78,47 @@ int ip_route_me_harder(struct sk_buff **pskb)
 }
 EXPORT_SYMBOL(ip_route_me_harder);
 
+#ifdef CONFIG_XFRM
+int ip_xfrm_me_harder(struct sk_buff **pskb)
+{
+        struct flowi fl;
+        unsigned int hh_len;
+        struct dst_entry *dst;
+
+        if (IPCB(*pskb)->flags & IPSKB_XFRM_TRANSFORMED)
+                return 0;
+        if (xfrm_decode_session(*pskb, &fl, AF_INET) < 0)
+                return -1;
+
+        dst = (*pskb)->dst;
+        if (dst->xfrm)
+                dst = ((struct xfrm_dst *)dst)->route;
+        dst_hold(dst);
+
+        if (xfrm_lookup(&dst, &fl, (*pskb)->sk, 0) < 0)
+                return -1;
+
+        dst_release((*pskb)->dst);
+        (*pskb)->dst = dst;
+
+        /* Change in oif may mean change in hh_len. */
+        hh_len = (*pskb)->dst->dev->hard_header_len;
+        if (skb_headroom(*pskb) < hh_len) {
+                struct sk_buff *nskb;
+
+                nskb = skb_realloc_headroom(*pskb, hh_len);
+                if (!nskb)
+                        return -1;
+                if ((*pskb)->sk)
+                        skb_set_owner_w(nskb, (*pskb)->sk);
+                kfree_skb(*pskb);
+                *pskb = nskb;
+        }
+        return 0;
+}
+EXPORT_SYMBOL(ip_xfrm_me_harder);
+#endif
+
 void (*ip_nat_decode_session)(struct sk_buff *, struct flowi *);
 EXPORT_SYMBOL(ip_nat_decode_session);
 
diff --git a/net/ipv4/netfilter/ip_nat_standalone.c b/net/ipv4/netfilter/ip_nat_standalone.c
index 92c54999a19d..7c3f7d380240 100644
--- a/net/ipv4/netfilter/ip_nat_standalone.c
+++ b/net/ipv4/netfilter/ip_nat_standalone.c
@@ -235,19 +235,19 @@ ip_nat_out(unsigned int hooknum,
                 return NF_ACCEPT;
 
         ret = ip_nat_fn(hooknum, pskb, in, out, okfn);
+#ifdef CONFIG_XFRM
         if (ret != NF_DROP && ret != NF_STOLEN
             && (ct = ip_conntrack_get(*pskb, &ctinfo)) != NULL) {
                 enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
 
                 if (ct->tuplehash[dir].tuple.src.ip !=
                     ct->tuplehash[!dir].tuple.dst.ip
-#ifdef CONFIG_XFRM
                     || ct->tuplehash[dir].tuple.src.u.all !=
                        ct->tuplehash[!dir].tuple.dst.u.all
-#endif
                     )
-                        return ip_route_me_harder(pskb) == 0 ? ret : NF_DROP;
+                        return ip_xfrm_me_harder(pskb) == 0 ? ret : NF_DROP;
         }
+#endif
         return ret;
 }