Forward to 2.6.33-rc8

Merge branch 'linus' into rt/head with a pile of conflicts.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

17 files changed, 50 insertions, 135 deletions

diff --git a/arch/xtensa/include/asm/asm-offsets.h b/arch/xtensa/include/asm/asm-offsets.h
new file mode 100644
index 000000000000..d370ee36a182
--- /dev/null
+++ b/arch/xtensa/include/asm/asm-offsets.h
@@ -0,0 +1 @@
+#include <generated/asm-offsets.h>
diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
index b7b8fbe47c77..a508f2f73bd7 100644
--- a/arch/xtensa/include/asm/cacheflush.h
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -101,6 +101,7 @@ static inline void __invalidate_icache_page_alias(unsigned long virt,
 #define flush_cache_vmap(start,end)     flush_cache_all()
 #define flush_cache_vunmap(start,end)   flush_cache_all()
 
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
 extern void flush_dcache_page(struct page*);
 extern void flush_cache_range(struct vm_area_struct*, ulong, ulong);
 extern void flush_cache_page(struct vm_area_struct*, unsigned long, unsigned long);
diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h
index c3f53e755ca5..5eb6d695e987 100644
--- a/arch/xtensa/include/asm/elf.h
+++ b/arch/xtensa/include/asm/elf.h
@@ -123,7 +123,6 @@ extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *);
 #define ELF_CLASS       ELFCLASS32
 #define ELF_ARCH        EM_XTENSA
 
-#define USE_ELF_CORE_DUMP
 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 
 /*
diff --git a/arch/xtensa/include/asm/mman.h b/arch/xtensa/include/asm/mman.h
index 9b92620c8a1e..fca4db425f6e 100644
--- a/arch/xtensa/include/asm/mman.h
+++ b/arch/xtensa/include/asm/mman.h
@@ -53,6 +53,8 @@
 #define MAP_LOCKED      0x8000          /* pages are locked */
 #define MAP_POPULATE    0x10000         /* populate (prefault) pagetables */
 #define MAP_NONBLOCK    0x20000         /* do not block on IO */
+#define MAP_STACK       0x40000         /* give out an address that is best suited for process/thread stacks */
+#define MAP_HUGETLB     0x80000         /* create a huge page mapping */
 
 /*
  * Flags for msync
@@ -78,6 +80,9 @@
 #define MADV_DONTFORK   10              /* don't inherit across fork */
 #define MADV_DOFORK     11              /* do inherit across fork */
 
+#define MADV_MERGEABLE   12             /* KSM may merge identical pages */
+#define MADV_UNMERGEABLE 13             /* KSM may not merge identical pages */
+
 /* compatibility flags */
 #define MAP_FILE        0
 
diff --git a/arch/xtensa/include/asm/socket.h b/arch/xtensa/include/asm/socket.h
index dd1a7a4a1cea..cbdf2ffaacff 100644
--- a/arch/xtensa/include/asm/socket.h
+++ b/arch/xtensa/include/asm/socket.h
@@ -68,4 +68,9 @@
 #define SO_TIMESTAMPING         37
 #define SCM_TIMESTAMPING        SO_TIMESTAMPING
 
+#define SO_PROTOCOL             38
+#define SO_DOMAIN               39
+
+#define SO_RXQ_OVFL             40
+
 #endif  /* _XTENSA_SOCKET_H */
diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h
index 05cebf8f62b1..efcf33b92e4c 100644
--- a/arch/xtensa/include/asm/syscall.h
+++ b/arch/xtensa/include/asm/syscall.h
@@ -12,9 +12,6 @@ struct pt_regs;
 struct sigaction;
 asmlinkage long xtensa_execve(char*, char**, char**, struct pt_regs*);
 asmlinkage long xtensa_clone(unsigned long, unsigned long, struct pt_regs*);
-asmlinkage long xtensa_pipe(int __user *);
-asmlinkage long xtensa_mmap2(unsigned long, unsigned long, unsigned long,
-                             unsigned long, unsigned long, unsigned long);
 asmlinkage long xtensa_ptrace(long, long, long, long);
 asmlinkage long xtensa_sigreturn(struct pt_regs*);
 asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index c092c8fbb2cf..528042c2951e 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -94,7 +94,7 @@ __SYSCALL( 35, sys_readlink, 3)
 #define __NR_mknod                               36
 __SYSCALL( 36, sys_mknod, 3)
 #define __NR_pipe                                37
-__SYSCALL( 37, xtensa_pipe, 1)
+__SYSCALL( 37, sys_pipe, 1)
 #define __NR_unlink                              38
 __SYSCALL( 38, sys_unlink, 1)
 #define __NR_rmdir                               39
@@ -189,7 +189,7 @@ __SYSCALL( 79, sys_fremovexattr, 2)
 /* File Map / Shared Memory Operations */
 
 #define __NR_mmap2                               80
-__SYSCALL( 80, xtensa_mmap2, 6)
+__SYSCALL( 80, sys_mmap_pgoff, 6)
 #define __NR_munmap                              81
 __SYSCALL( 81, sys_munmap, 2)
 #define __NR_mprotect                            82
@@ -681,8 +681,10 @@ __SYSCALL(304, sys_signalfd, 3)
 __SYSCALL(305, sys_ni_syscall, 0)
 #define __NR_eventfd                            306
 __SYSCALL(306, sys_eventfd, 1)
+#define __NR_recvmmsg                           307
+__SYSCALL(307, sys_recvmmsg, 5)
 
-#define __NR_syscall_count                      307
+#define __NR_syscall_count                      308
 
 /*
  * sysxtensa syscall handler
diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index fe3186de6a33..6f56d95f2c1e 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -27,7 +27,8 @@ sed-y = -e 's/(\(\.[a-z]*it\|\.ref\|\)\.text)/(\1.literal \1.text)/g'	\
         -e 's/(\(\.text\.[a-z]*\))/(\1.literal \1)/g'
 
 quiet_cmd__cpp_lds_S = LDS     $@
-      cmd__cpp_lds_S = $(CPP) $(cpp_flags) -D__ASSEMBLY__ $< | sed $(sed-y) >$@
+      cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \
+                       | sed $(sed-y) >$@
 
 $(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
         $(call if_changed_dep,_cpp_lds_S)
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index d9ddc1ba761c..d215adcfd4ea 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -235,7 +235,7 @@ should_never_return:
  * BSS section
  */
         
-.section ".bss.page_aligned", "w"
+__PAGE_ALIGNED_BSS
 #ifdef CONFIG_MMU
 ENTRY(swapper_pg_dir)
         .fill   PAGE_SIZE, 1, 0
diff --git a/arch/xtensa/kernel/init_task.c b/arch/xtensa/kernel/init_task.c
index c4302f0e4ba0..cd122fb7e48a 100644
--- a/arch/xtensa/kernel/init_task.c
+++ b/arch/xtensa/kernel/init_task.c
@@ -23,9 +23,8 @@
 
 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-union thread_union init_thread_union
-        __attribute__((__section__(".data.init_task"))) =
-{ INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union __init_task_data =
+        { INIT_THREAD_INFO(init_task) };
 
 struct task_struct init_task = INIT_TASK(init_task);
 
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index bb599c305033..8cd38484e130 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -90,7 +90,7 @@ int show_interrupts(struct seq_file *p, void *v)
         }
 
         if (i < NR_IRQS) {
-                atomic_spin_lock_irqsave(&irq_desc[i].lock, flags);
+                raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
                 action = irq_desc[i].action;
                 if (!action)
                         goto skip;
@@ -109,7 +109,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
                 seq_putc(p, '\n');
 skip:
-                atomic_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+                raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
         } else if (i == NR_IRQS) {
                 seq_printf(p, "NMI: ");
                 for_each_online_cpu(j)
diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c
index ac15ecbdf919..816e6d0d686c 100644
--- a/arch/xtensa/kernel/syscall.c
+++ b/arch/xtensa/kernel/syscall.c
@@ -39,49 +39,6 @@ syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= {
 #include <asm/unistd.h>
 };
 
-/*
- * xtensa_pipe() is the normal C calling standard for creating a pipe. It's not
- * the way unix traditional does this, though.
- */
-
-asmlinkage long xtensa_pipe(int __user *userfds)
-{
-        int fd[2];
-        int error;
-
-        error = do_pipe_flags(fd, 0);
-        if (!error) {
-                if (copy_to_user(userfds, fd, 2 * sizeof(int)))
-                        error = -EFAULT;
-        }
-        return error;
-}
-
-
-asmlinkage long xtensa_mmap2(unsigned long addr, unsigned long len,
-                             unsigned long prot, unsigned long flags,
-                             unsigned long fd, unsigned long pgoff)
-{
-        int error = -EBADF;
-        struct file * file = NULL;
-
-        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-        if (!(flags & MAP_ANONYMOUS)) {
-                file = fget(fd);
-                if (!file)
-                        goto out;
-        }
-
-        down_write(&current->mm->mmap_sem);
-        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-        up_write(&current->mm->mmap_sem);
-
-        if (file)
-                fput(file);
-out:
-        return error;
-}
-
 asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg)
 {
         unsigned long ret;
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index 8848120d291b..e8184d5aeedb 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -13,6 +13,7 @@
  */
 
 #include <linux/errno.h>
+#include <linux/sched.h>
 #include <linux/time.h>
 #include <linux/clocksource.h>
 #include <linux/interrupt.h>
@@ -59,9 +60,8 @@ static struct irqaction timer_irqaction = {
 
 void __init time_init(void)
 {
-        xtime.tv_nsec = 0;
-        xtime.tv_sec = read_persistent_clock();
-
+        /* FIXME: xtime&wall_to_monotonic are set in timekeeping_init. */
+        read_persistent_clock(&xtime);
         set_normalized_timespec(&wall_to_monotonic,
                 -xtime.tv_sec, -xtime.tv_nsec);
 
@@ -101,7 +101,7 @@ again:
                 update_process_times(user_mode(get_irq_regs()));
 #endif
 
-                write_seqlock(&xtime_lock);
+                write_raw_seqlock(&xtime_lock);
 
                 do_timer(1); /* Linux handler in kernel/timer.c */
 
@@ -110,7 +110,7 @@ again:
                 next += CCOUNT_PER_JIFFY;
                 set_linux_timer(next);
 
-                write_sequnlock(&xtime_lock);
+                write_raw_sequnlock(&xtime_lock);
         }
 
         /* Allow platform to do something useful (Wdog). */
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index 41c159cd872f..9b526154c9ba 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -15,6 +15,8 @@
  */
 
 #include <asm-generic/vmlinux.lds.h>
+#include <asm/page.h>
+#include <asm/thread_info.h>
 
 #include <variant/core.h>
 #include <platform/hardware.h>
@@ -107,41 +109,18 @@ SECTIONS
 
   .fixup   : { *(.fixup) }
 
-  . = ALIGN(16);
-
-  __ex_table : {
-    __start___ex_table = .;
-    *(__ex_table)
-    __stop___ex_table = .;
-  }
-
+  EXCEPTION_TABLE(16)
   /* Data section */
 
-  . = ALIGN(XCHAL_ICACHE_LINESIZE);
   _fdata = .;
-  .data :
-  {
-    DATA_DATA
-    CONSTRUCTORS
-    . = ALIGN(XCHAL_ICACHE_LINESIZE);
-    *(.data.cacheline_aligned)
-  }
-
+  RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
   _edata = .;
 
-  /* The initial task */
-  . = ALIGN(8192);
-  .data.init_task : { *(.data.init_task) }
-
   /* Initialization code and data: */
 
-  . = ALIGN(1 << 12);
+  . = ALIGN(PAGE_SIZE);
   __init_begin = .;
-  .init.text : {
-        _sinittext = .;
-        INIT_TEXT
-        _einittext = .;
-  }
+  INIT_TEXT_SECTION(PAGE_SIZE)
 
   .init.data :
   {
@@ -168,36 +147,15 @@ SECTIONS
                    .DebugInterruptVector.text);
   
     __boot_reloc_table_end = ABSOLUTE(.) ;
-  }
 
-  . = ALIGN(XCHAL_ICACHE_LINESIZE);
-
-  __setup_start = .;
-  .init.setup : { *(.init.setup) }
-  __setup_end = .;
-
-  __initcall_start = .;
-  .initcall.init : {
-        INITCALLS
+    INIT_SETUP(XCHAL_ICACHE_LINESIZE)
+    INIT_CALLS
+    CON_INITCALL
+    SECURITY_INITCALL
+    INIT_RAM_FS
   }
-  __initcall_end = .;
-
-  __con_initcall_start = .;
-  .con_initcall.init : { *(.con_initcall.init) }
-  __con_initcall_end = .;
-
-  SECURITY_INIT
-
-
-#ifdef CONFIG_BLK_DEV_INITRD
-  . = ALIGN(4096);
-  __initramfs_start =.;
-  .init.ramfs : { *(.init.ramfs) }
-  __initramfs_end = .;
-#endif
-
-  PERCPU(4096)
 
+  PERCPU(PAGE_SIZE)
 
   /* We need this dummy segment here */
 
@@ -252,16 +210,11 @@ SECTIONS
                   .DoubleExceptionVector.literal)
 
   . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
-  . = ALIGN(1 << 12);
+  . = ALIGN(PAGE_SIZE);
 
   __init_end = .;
 
-  . = ALIGN(8192);
-
-  /* BSS section */
-  _bss_start = .;
-  .bss : { *(.bss.page_aligned) *(.bss) }
-  _bss_end = .;
+  BSS_SECTION(0, 8192, 0)
 
   _end = .;
 
@@ -280,15 +233,6 @@ SECTIONS
     *(.ResetVector.text)
   }
 
-  /* Sections to be discarded */
-  /DISCARD/ :
-  {
-        *(.exit.literal)
-        EXIT_TEXT
-        EXIT_DATA
-        *(.exitcall.exit)
-  }
-
   .xt.lit : { *(.xt.lit) }
   .xt.prop : { *(.xt.prop) }
 
@@ -321,4 +265,8 @@ SECTIONS
     *(.xt.lit)
     *(.gnu.linkonce.p*)
   }
+
+  /* Sections to be discarded */
+  DISCARDS
+  /DISCARD/ : { *(.exit.literal) }
 }
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 427e14fa43c5..cdbc27ca9665 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -203,7 +203,7 @@ void __init mem_init(void)
 
         printk("Memory: %luk/%luk available (%ldk kernel code, %ldk reserved, "
                "%ldk data, %ldk init %ldk highmem)\n",
-               (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+               nr_free_pages() << (PAGE_SHIFT-10),
                ram << (PAGE_SHIFT-10),
                codesize >> 10,
                reservedpages << (PAGE_SHIFT-10),
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 4c559cf7da2d..e60a1f57022f 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -196,7 +196,7 @@ static const struct file_operations rs_proc_fops = {
         .release        = single_release,
 };
 
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
         .open = rs_open,
         .close = rs_close,
         .write = rs_write,
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index edad4156d89a..2f0b86b37cf9 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -545,7 +545,7 @@ static int iss_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
         spin_unlock_irqrestore(&lp->lock, flags);
 
         dev_kfree_skb(skb);
-        return 0;
+        return NETDEV_TX_OK;
 }