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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-06-15 18:08:07 -0700 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-06-15 18:08:07 -0700 |
| commit | 7eef4091a653c243a87e5375c54504cc03bec4d8 (patch) | |
| tree | f65b77f830b2c8f7d014512badfef5df0d591ee9 /kernel/kprobes.c | |
| parent | 0a93a47f042c459f0f46942c3a920e3c81878031 (diff) | |
| parent | 07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff) | |
Merge commit 'v2.6.30' into for-2.6.31
Diffstat (limited to 'kernel/kprobes.c')
| -rw-r--r-- | kernel/kprobes.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index a5e74ddee0e2..c0fa54b276d9 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -319,6 +319,22 @@ struct kprobe __kprobes *get_kprobe(void *addr) return NULL; } +/* Arm a kprobe with text_mutex */ +static void __kprobes arm_kprobe(struct kprobe *kp) +{ + mutex_lock(&text_mutex); + arch_arm_kprobe(kp); + mutex_unlock(&text_mutex); +} + +/* Disarm a kprobe with text_mutex */ +static void __kprobes disarm_kprobe(struct kprobe *kp) +{ + mutex_lock(&text_mutex); + arch_disarm_kprobe(kp); + mutex_unlock(&text_mutex); +} + /* * Aggregate handlers for multiple kprobes support - these handlers * take care of invoking the individual kprobe handlers on p->list @@ -538,7 +554,7 @@ static int __kprobes add_new_kprobe(struct kprobe *ap, struct kprobe *p) ap->flags &= ~KPROBE_FLAG_DISABLED; if (!kprobes_all_disarmed) /* Arm the breakpoint again. */ - arch_arm_kprobe(ap); + arm_kprobe(ap); } return 0; } @@ -789,11 +805,8 @@ static int __kprobes __unregister_kprobe_top(struct kprobe *p) * enabled and not gone - otherwise, the breakpoint would * already have been removed. We save on flushing icache. */ - if (!kprobes_all_disarmed && !kprobe_disabled(old_p)) { - mutex_lock(&text_mutex); - arch_disarm_kprobe(p); - mutex_unlock(&text_mutex); - } + if (!kprobes_all_disarmed && !kprobe_disabled(old_p)) + disarm_kprobe(p); hlist_del_rcu(&old_p->hlist); } else { if (p->break_handler && !kprobe_gone(p)) @@ -810,7 +823,7 @@ noclean: if (!kprobe_disabled(old_p)) { try_to_disable_aggr_kprobe(old_p); if (!kprobes_all_disarmed && kprobe_disabled(old_p)) - arch_disarm_kprobe(old_p); + disarm_kprobe(old_p); } } return 0; @@ -1364,7 +1377,7 @@ int __kprobes disable_kprobe(struct kprobe *kp) try_to_disable_aggr_kprobe(p); if (!kprobes_all_disarmed && kprobe_disabled(p)) - arch_disarm_kprobe(p); + disarm_kprobe(p); out: mutex_unlock(&kprobe_mutex); return ret; @@ -1393,7 +1406,7 @@ int __kprobes enable_kprobe(struct kprobe *kp) } if (!kprobes_all_disarmed && kprobe_disabled(p)) - arch_arm_kprobe(p); + arm_kprobe(p); p->flags &= ~KPROBE_FLAG_DISABLED; if (p != kp) |