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authorMasami Hiramatsu <mhiramat@redhat.com>2009-11-24 16:56:51 -0500
committerIngo Molnar <mingo@elte.hu>2009-11-26 10:55:38 +0100
commitf9d4257e01d266e67420cc99d456b6d4c8464f54 (patch)
tree6661efc95e3002b9b1bf8d9c94deb9ec736a04de /kernel/signal.c
parentd1eb650ff4130972fa21462fa49cd35a2865403b (diff)
downloadlinux-f9d4257e01d266e67420cc99d456b6d4c8464f54.tar.bz2
tracepoint: Add signal deliver event
Add a tracepoint where a process gets a signal. This tracepoint shows signal-number, sa-handler and sa-flag. Changes in v3: - Add docbook style comments Changes in v2: - Add siginfo argument - Fix comment Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Reviewed-by: Jason Baron <jbaron@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Oleg Nesterov <oleg@redhat.com> LKML-Reference: <20091124215651.30449.20926.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index a1e0cc6b32c3..349d44937406 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1840,6 +1840,9 @@ relock:
ka = &sighand->action[signr-1];
}
+ /* Trace actually delivered signals. */
+ trace_signal_deliver(signr, info, ka);
+
if (ka->sa.sa_handler == SIG_IGN) /* Do nothing. */
continue;
if (ka->sa.sa_handler != SIG_DFL) {