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Diffstat (limited to 'kernel')
-rw-r--r--kernel/kprobes.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index fef1af8a73ce..1fb9f753ef60 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -48,7 +48,7 @@
48static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE]; 48static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE];
49static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE]; 49static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE];
50 50
51DECLARE_MUTEX(kprobe_mutex); /* Protects kprobe_table */ 51DEFINE_MUTEX(kprobe_mutex); /* Protects kprobe_table */
52DEFINE_SPINLOCK(kretprobe_lock); /* Protects kretprobe_inst_table */ 52DEFINE_SPINLOCK(kretprobe_lock); /* Protects kretprobe_inst_table */
53static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL; 53static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL;
54 54
@@ -460,7 +460,7 @@ static int __kprobes __register_kprobe(struct kprobe *p,
460 } 460 }
461 461
462 p->nmissed = 0; 462 p->nmissed = 0;
463 down(&kprobe_mutex); 463 mutex_lock(&kprobe_mutex);
464 old_p = get_kprobe(p->addr); 464 old_p = get_kprobe(p->addr);
465 if (old_p) { 465 if (old_p) {
466 ret = register_aggr_kprobe(old_p, p); 466 ret = register_aggr_kprobe(old_p, p);
@@ -477,7 +477,7 @@ static int __kprobes __register_kprobe(struct kprobe *p,
477 arch_arm_kprobe(p); 477 arch_arm_kprobe(p);
478 478
479out: 479out:
480 up(&kprobe_mutex); 480 mutex_unlock(&kprobe_mutex);
481 481
482 if (ret && probed_mod) 482 if (ret && probed_mod)
483 module_put(probed_mod); 483 module_put(probed_mod);
@@ -496,10 +496,10 @@ void __kprobes unregister_kprobe(struct kprobe *p)
496 struct kprobe *old_p, *list_p; 496 struct kprobe *old_p, *list_p;
497 int cleanup_p; 497 int cleanup_p;
498 498
499 down(&kprobe_mutex); 499 mutex_lock(&kprobe_mutex);
500 old_p = get_kprobe(p->addr); 500 old_p = get_kprobe(p->addr);
501 if (unlikely(!old_p)) { 501 if (unlikely(!old_p)) {
502 up(&kprobe_mutex); 502 mutex_unlock(&kprobe_mutex);
503 return; 503 return;
504 } 504 }
505 if (p != old_p) { 505 if (p != old_p) {
@@ -507,7 +507,7 @@ void __kprobes unregister_kprobe(struct kprobe *p)
507 if (list_p == p) 507 if (list_p == p)
508 /* kprobe p is a valid probe */ 508 /* kprobe p is a valid probe */
509 goto valid_p; 509 goto valid_p;
510 up(&kprobe_mutex); 510 mutex_unlock(&kprobe_mutex);
511 return; 511 return;
512 } 512 }
513valid_p: 513valid_p:
@@ -523,7 +523,7 @@ valid_p:
523 cleanup_p = 0; 523 cleanup_p = 0;
524 } 524 }
525 525
526 up(&kprobe_mutex); 526 mutex_unlock(&kprobe_mutex);
527 527
528 synchronize_sched(); 528 synchronize_sched();
529 if (p->mod_refcounted && 529 if (p->mod_refcounted &&