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Diffstat (limited to 'arch/ppc64/kernel/kprobes.c')
-rw-r--r--arch/ppc64/kernel/kprobes.c40
1 files changed, 21 insertions, 19 deletions
diff --git a/arch/ppc64/kernel/kprobes.c b/arch/ppc64/kernel/kprobes.c
index a3d519518fb..7e80d49c589 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