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authorNamhyung Kim <namhyung@gmail.com>2010-09-15 10:04:30 +0900
committerIngo Molnar <mingo@elte.hu>2010-09-15 10:44:02 +0200
commit635c17c2b2b4e5cd34f5dcba19d751b4e58533c2 (patch)
tree8d24215b1eb84157679c212e40541fcdb9fe9d8c /kernel/kprobes.c
parent6abded71d730322df96c5b7f4ab952ffd5a0080d (diff)
kprobes: Add sparse context annotations
This removes following warnings when build with C=1 warning: context imbalance in 'kretprobe_hash_lock' - wrong count at exit warning: context imbalance in 'kretprobe_table_lock' - wrong count at exit warning: context imbalance in 'kretprobe_hash_unlock' - unexpected unlock warning: context imbalance in 'kretprobe_table_unlock' - unexpected unlock Signed-off-by: Namhyung Kim <namhyung@gmail.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1284512670-2369-6-git-send-email-namhyung@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/kprobes.c')
-rw-r--r--kernel/kprobes.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index c53aad5d7e5e..6dd5359e1f0e 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -831,6 +831,7 @@ void __kprobes recycle_rp_inst(struct kretprobe_instance *ri,
void __kprobes kretprobe_hash_lock(struct task_struct *tsk,
struct hlist_head **head, unsigned long *flags)
+__acquires(hlist_lock)
{
unsigned long hash = hash_ptr(tsk, KPROBE_HASH_BITS);
spinlock_t *hlist_lock;
@@ -842,6 +843,7 @@ void __kprobes kretprobe_hash_lock(struct task_struct *tsk,
static void __kprobes kretprobe_table_lock(unsigned long hash,
unsigned long *flags)
+__acquires(hlist_lock)
{
spinlock_t *hlist_lock = kretprobe_table_lock_ptr(hash);
spin_lock_irqsave(hlist_lock, *flags);
@@ -849,6 +851,7 @@ static void __kprobes kretprobe_table_lock(unsigned long hash,
void __kprobes kretprobe_hash_unlock(struct task_struct *tsk,
unsigned long *flags)
+__releases(hlist_lock)
{
unsigned long hash = hash_ptr(tsk, KPROBE_HASH_BITS);
spinlock_t *hlist_lock;
@@ -859,6 +862,7 @@ void __kprobes kretprobe_hash_unlock(struct task_struct *tsk,
static void __kprobes kretprobe_table_unlock(unsigned long hash,
unsigned long *flags)
+__releases(hlist_lock)
{
spinlock_t *hlist_lock = kretprobe_table_lock_ptr(hash);
spin_unlock_irqrestore(hlist_lock, *flags);

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