From: Namhyung Kim <namhyung@gmail.com>
Date: Wed, 27 Oct 2010 22:34:07 +0000 (-0700)
Subject: signals: annotate lock context change on ptrace_stop()
X-Git-Tag: upstream/snapshot3+hdmi~12627^2~62
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b84011508360d6885a9d95a235ec77d56f133377;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

signals: annotate lock context change on ptrace_stop()

ptrace_stop() releases and regrabs current->sighand->siglock but was
missing proper annotation.  Add it.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/signal.c b/kernel/signal.c
index e921409..4e3cff1 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1618,6 +1618,8 @@ static int sigkill_pending(struct task_struct *tsk)
  * is gone, we keep current->exit_code unless clear_code.
  */
 static void ptrace_stop(int exit_code, int clear_code, siginfo_t *info)
+	__releases(&current->sighand->siglock)
+	__acquires(&current->sighand->siglock)
 {
 	if (arch_ptrace_stop_needed(exit_code, info)) {
 		/*