10 files changed, 39 insertions, 64 deletions

diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index 13b262f10216..deca68ad644a 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -44,6 +44,10 @@ config SCHED_NO_NO_OMIT_FRAME_POINTER
         bool
         default y
 
+config ARCH_MAY_HAVE_PC_FDC
+        bool
+        default y
+
 # We optimistically allocate largepages from the VM, so make the limit
 # large enough (16MB). This badly named config option is actually
 # max order + 1
diff --git a/arch/ppc64/Makefile b/arch/ppc64/Makefile
index 6350cce82efb..8189953a372c 100644
--- a/arch/ppc64/Makefile
+++ b/arch/ppc64/Makefile
@@ -49,7 +49,7 @@ NM		:= $(NM) --synthetic
 
 endif
 
-CHECKFLAGS      += -m64 -D__powerpc__
+CHECKFLAGS      += -m64 -D__powerpc__ -D__powerpc64__
 
 LDFLAGS         := -m elf64ppc
 LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
diff --git a/arch/ppc64/kernel/kprobes.c b/arch/ppc64/kernel/kprobes.c
index a3d519518fb8..7e80d49c589a 100644
--- a/arch/ppc64/kernel/kprobes.c
+++ b/arch/ppc64/kernel/kprobes.c
@@ -44,7 +44,7 @@ static struct kprobe *kprobe_prev;
 static unsigned long kprobe_status_prev, kprobe_saved_msr_prev;
 static struct pt_regs jprobe_saved_regs;
 
-int arch_prepare_kprobe(struct kprobe *p)
+int __kprobes arch_prepare_kprobe(struct kprobe *p)
 {
         int ret = 0;
         kprobe_opcode_t insn = *p->addr;
@@ -68,27 +68,27 @@ int arch_prepare_kprobe(struct kprobe *p)
         return ret;
 }
 
-void arch_copy_kprobe(struct kprobe *p)
+void __kprobes arch_copy_kprobe(struct kprobe *p)
 {
         memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
         p->opcode = *p->addr;
 }
 
-void arch_arm_kprobe(struct kprobe *p)
+void __kprobes arch_arm_kprobe(struct kprobe *p)
 {
         *p->addr = BREAKPOINT_INSTRUCTION;
         flush_icache_range((unsigned long) p->addr,
                            (unsigned long) p->addr + sizeof(kprobe_opcode_t));
 }
 
-void arch_disarm_kprobe(struct kprobe *p)
+void __kprobes arch_disarm_kprobe(struct kprobe *p)
 {
         *p->addr = p->opcode;
         flush_icache_range((unsigned long) p->addr,
                            (unsigned long) p->addr + sizeof(kprobe_opcode_t));
 }
 
-void arch_remove_kprobe(struct kprobe *p)
+void __kprobes arch_remove_kprobe(struct kprobe *p)
 {
         up(&kprobe_mutex);
         free_insn_slot(p->ainsn.insn);
@@ -102,7 +102,7 @@ static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
         regs->msr |= MSR_SE;
 
         /* single step inline if it is a trap variant */
-        if (IS_TW(insn) || IS_TD(insn) || IS_TWI(insn) || IS_TDI(insn))
+        if (is_trap(insn))
                 regs->nip = (unsigned long)p->addr;
         else
                 regs->nip = (unsigned long)p->ainsn.insn;
@@ -122,7 +122,8 @@ static inline void restore_previous_kprobe(void)
         kprobe_saved_msr = kprobe_saved_msr_prev;
 }
 
-void arch_prepare_kretprobe(struct kretprobe *rp, struct pt_regs *regs)
+void __kprobes arch_prepare_kretprobe(struct kretprobe *rp,
+                                      struct pt_regs *regs)
 {
         struct kretprobe_instance *ri;
 
@@ -151,7 +152,9 @@ static inline int kprobe_handler(struct pt_regs *regs)
                    Disarm the probe we just hit, and ignore it. */
                 p = get_kprobe(addr);
                 if (p) {
-                        if (kprobe_status == KPROBE_HIT_SS) {
+                        kprobe_opcode_t insn = *p->ainsn.insn;
+                        if (kprobe_status == KPROBE_HIT_SS &&
+                                        is_trap(insn)) {
                                 regs->msr &= ~MSR_SE;
                                 regs->msr |= kprobe_saved_msr;
                                 unlock_kprobes();
@@ -191,8 +194,7 @@ static inline int kprobe_handler(struct pt_regs *regs)
                          * trap variant, it could belong to someone else
                          */
                         kprobe_opcode_t cur_insn = *addr;
-                        if (IS_TW(cur_insn) || IS_TD(cur_insn) ||
-                                        IS_TWI(cur_insn) || IS_TDI(cur_insn))
+                        if (is_trap(cur_insn))
                                 goto no_kprobe;
                         /*
                          * The breakpoint instruction was removed right
@@ -244,7 +246,7 @@ void kretprobe_trampoline_holder(void)
 /*
  * Called when the probe at kretprobe trampoline is hit
  */
-int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
+int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
 {
         struct kretprobe_instance *ri = NULL;
         struct hlist_head *head;
@@ -308,7 +310,7 @@ int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
  * single-stepped a copy of the instruction.  The address of this
  * copy is p->ainsn.insn.
  */
-static void resume_execution(struct kprobe *p, struct pt_regs *regs)
+static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
 {
         int ret;
         unsigned int insn = *p->ainsn.insn;
@@ -373,8 +375,8 @@ static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 /*
  * Wrapper routine to for handling exceptions.
  */
-int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val,
-                             void *data)
+int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
+                                       unsigned long val, void *data)
 {
         struct die_args *args = (struct die_args *)data;
         int ret = NOTIFY_DONE;
@@ -402,11 +404,11 @@ int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val,
         default:
                 break;
         }
-        preempt_enable();
+        preempt_enable_no_resched();
         return ret;
 }
 
-int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
 {
         struct jprobe *jp = container_of(p, struct jprobe, kp);
 
@@ -419,16 +421,16 @@ int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
         return 1;
 }
 
-void jprobe_return(void)
+void __kprobes jprobe_return(void)
 {
         asm volatile("trap" ::: "memory");
 }
 
-void jprobe_return_end(void)
+void __kprobes jprobe_return_end(void)
 {
 };
 
-int longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
 {
         /*
          * FIXME - we should ideally be validating that we got here 'cos
diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S
index 474df0a862bf..6d860c1d9fa0 100644
--- a/arch/ppc64/kernel/misc.S
+++ b/arch/ppc64/kernel/misc.S
@@ -183,7 +183,7 @@ PPC64_CACHES:
  *   flush all bytes from start through stop-1 inclusive
  */
 
-_GLOBAL(__flush_icache_range)
+_KPROBE(__flush_icache_range)
 
 /*
  * Flush the data cache to memory 
@@ -223,7 +223,7 @@ _GLOBAL(__flush_icache_range)
         bdnz    2b
         isync
         blr
-        
+        .previous .text
 /*
  * Like above, but only do the D-cache.
  *
@@ -957,7 +957,7 @@ _GLOBAL(sys_call_table32)
         .llong .ppc_fork
         .llong .sys_read
         .llong .sys_write
-        .llong .sys32_open              /* 5 */
+        .llong .compat_sys_open         /* 5 */
         .llong .sys_close
         .llong .sys32_waitpid
         .llong .sys32_creat
diff --git a/arch/ppc64/kernel/pSeries_reconfig.c b/arch/ppc64/kernel/pSeries_reconfig.c
index dc2a69d412a2..58c61219d08e 100644
--- a/arch/ppc64/kernel/pSeries_reconfig.c
+++ b/arch/ppc64/kernel/pSeries_reconfig.c
@@ -111,7 +111,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
         struct device_node *np;
         int err = -ENOMEM;
 
-        np = kcalloc(1, sizeof(*np), GFP_KERNEL);
+        np = kzalloc(sizeof(*np), GFP_KERNEL);
         if (!np)
                 goto out_err;
 
diff --git a/arch/ppc64/kernel/sys_ppc32.c b/arch/ppc64/kernel/sys_ppc32.c
index 206619080e66..214914a95a50 100644
--- a/arch/ppc64/kernel/sys_ppc32.c
+++ b/arch/ppc64/kernel/sys_ppc32.c
@@ -867,37 +867,6 @@ off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
         return sys_lseek(fd, (int)offset, origin);
 }
 
-/*
- * This is just a version for 32-bit applications which does
- * not force O_LARGEFILE on.
- */
-asmlinkage long sys32_open(const char __user * filename, int flags, int mode)
-{
-        char * tmp;
-        int fd, error;
-
-        tmp = getname(filename);
-        fd = PTR_ERR(tmp);
-        if (!IS_ERR(tmp)) {
-                fd = get_unused_fd();
-                if (fd >= 0) {
-                        struct file * f = filp_open(tmp, flags, mode);
-                        error = PTR_ERR(f);
-                        if (IS_ERR(f))
-                                goto out_error;
-                        fd_install(fd, f);
-                }
-out:
-                putname(tmp);
-        }
-        return fd;
-
-out_error:
-        put_unused_fd(fd);
-        fd = error;
-        goto out;
-}
-
 /* Note: it is necessary to treat bufsiz as an unsigned int,
  * with the corresponding cast to a signed int to insure that the 
  * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
diff --git a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c
index 91ef95ccda4f..9939c206afa4 100644
--- a/arch/ppc64/kernel/time.c
+++ b/arch/ppc64/kernel/time.c
@@ -128,7 +128,7 @@ static __inline__ void timer_check_rtc(void)
          * We should have an rtc call that only sets the minutes and
          * seconds like on Intel to avoid problems with non UTC clocks.
          */
-        if ( (time_status & STA_UNSYNC) == 0 &&
+        if (ntp_synced() &&
              xtime.tv_sec - last_rtc_update >= 659 &&
              abs((xtime.tv_nsec/1000) - (1000000-1000000/HZ)) < 500000/HZ &&
              jiffies - wall_jiffies == 1) {
@@ -435,10 +435,7 @@ int do_settimeofday(struct timespec *tv)
          */
         last_rtc_update = new_sec - 658;
 
-        time_adjust = 0;                /* stop active adjtime() */
-        time_status |= STA_UNSYNC;
-        time_maxerror = NTP_PHASE_LIMIT;
-        time_esterror = NTP_PHASE_LIMIT;
+        ntp_clear();
 
         delta_xsec = mulhdu( (tb_last_stamp-do_gtod.varp->tb_orig_stamp),
                              do_gtod.varp->tb_to_xs );
diff --git a/arch/ppc64/kernel/traps.c b/arch/ppc64/kernel/traps.c
index a8d5e83ee89f..7467ae508e6e 100644
--- a/arch/ppc64/kernel/traps.c
+++ b/arch/ppc64/kernel/traps.c
@@ -30,6 +30,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/delay.h>
+#include <linux/kprobes.h>
 #include <asm/kdebug.h>
 
 #include <asm/pgtable.h>
@@ -220,7 +221,7 @@ void instruction_breakpoint_exception(struct pt_regs *regs)
         _exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip);
 }
 
-void single_step_exception(struct pt_regs *regs)
+void __kprobes single_step_exception(struct pt_regs *regs)
 {
         regs->msr &= ~MSR_SE;  /* Turn off 'trace' bit */
 
@@ -398,7 +399,7 @@ check_bug_trap(struct pt_regs *regs)
         return 0;
 }
 
-void program_check_exception(struct pt_regs *regs)
+void __kprobes program_check_exception(struct pt_regs *regs)
 {
         if (debugger_fault_handler(regs))
                 return;
diff --git a/arch/ppc64/kernel/vmlinux.lds.S b/arch/ppc64/kernel/vmlinux.lds.S
index 4103cc13f8d6..0306510bc4ff 100644
--- a/arch/ppc64/kernel/vmlinux.lds.S
+++ b/arch/ppc64/kernel/vmlinux.lds.S
@@ -15,6 +15,7 @@ SECTIONS
         *(.text .text.*)
         SCHED_TEXT
         LOCK_TEXT
+        KPROBES_TEXT
         *(.fixup)
         . = ALIGN(4096);
         _etext = .;
diff --git a/arch/ppc64/mm/fault.c b/arch/ppc64/mm/fault.c
index 20b0f37e8bf8..772f0714a5b7 100644
--- a/arch/ppc64/mm/fault.c
+++ b/arch/ppc64/mm/fault.c
@@ -29,6 +29,7 @@
 #include <linux/interrupt.h>
 #include <linux/smp_lock.h>
 #include <linux/module.h>
+#include <linux/kprobes.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -84,8 +85,8 @@ static int store_updates_sp(struct pt_regs *regs)
  * The return value is 0 if the fault was handled, or the signal
  * number if this is a kernel fault that can't be handled here.
  */
-int do_page_fault(struct pt_regs *regs, unsigned long address,
-                  unsigned long error_code)
+int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
+                            unsigned long error_code)
 {
         struct vm_area_struct * vma;
         struct mm_struct *mm = current->mm;