kprobes: check CONFIG_FREEZER instead of CONFIG_PM

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / kprobes.c

diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
index 6c27679ec6aa1753be87e05b6c72a10553f69574..e948b28a5a9ab47a1f0d91d78ec7039f315830bd 100644 (file)
--- a/arch/x86/kernel/kprobes.c
+++ b/arch/x86/kernel/kprobes.c
@@ -376,9 +376,10 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
 
 void __kprobes arch_remove_kprobe(struct kprobe *p)
 {
-       mutex_lock(&kprobe_mutex);
-       free_insn_slot(p->ainsn.insn, (p->ainsn.boostable == 1));
-       mutex_unlock(&kprobe_mutex);
+       if (p->ainsn.insn) {
+               free_insn_slot(p->ainsn.insn, (p->ainsn.boostable == 1));
+               p->ainsn.insn = NULL;
+       }
 }
 
 static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
@@ -445,7 +446,7 @@ void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
 static void __kprobes setup_singlestep(struct kprobe *p, struct pt_regs *regs,
                                       struct kprobe_ctlblk *kcb)
 {
-#if !defined(CONFIG_PREEMPT) || defined(CONFIG_PM)
+#if !defined(CONFIG_PREEMPT) || defined(CONFIG_FREEZER)
        if (p->ainsn.boostable == 1 && !p->post_handler) {
                /* Boost up -- we can execute copied instructions directly */
                reset_current_kprobe();
@@ -694,7 +695,7 @@ static __used __kprobes void *trampoline_handler(struct pt_regs *regs)
        /*
         * It is possible to have multiple instances associated with a given
         * task either because multiple functions in the call path have
-        * return probes installed on them, and/or more then one
+        * return probes installed on them, and/or more than one
         * return probe was registered for a target function.
         *
         * We can handle this because: