* [PATCH] ftrace: fix check for return value of register_module_notifier in event_trace_init
@ 2009-05-20 17:26 Frederic Weisbecker
2009-05-20 18:15 ` Ingo Molnar
0 siblings, 1 reply; 2+ messages in thread
From: Frederic Weisbecker @ 2009-05-20 17:26 UTC (permalink / raw)
To: Ingo Molnar; +Cc: Ming Lei, Steven Rostedt, Li Zefan, LKML
Hi Ingo,
Here is a fixlet from Ming Lei which fixes a spurious warning.
Thanks.
The following changes since commit fd51d251e4cdb21f68e9dbc4336514d64a105a79:
Stefan Raspl (1):
blktrace: remove debugfs entries on bad path
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
tracing/core
Ming Lei (1):
ftrace: fix check for return value of register_module_notifier in event_trace_init
kernel/trace/trace_events.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
---
>From 5537937696c55530447c20aa27daccb8d0d29b33 Mon Sep 17 00:00:00 2001
From: Ming Lei <tom.leiming@gmail.com>
Date: Mon, 18 May 2009 23:04:46 +0800
Subject: [PATCH] ftrace: fix check for return value of register_module_notifier in event_trace_init
register_module_notifier() returns zero in the success case.
So fix the inverted fail case check in trace events modules
handler.
[ Impact: fix spurious warning on ftrace initialization]
Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---
kernel/trace/trace_events.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 0eec0c5..9e91c4a 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1174,7 +1174,7 @@ static __init int event_trace_init(void)
}
ret = register_module_notifier(&trace_module_nb);
- if (!ret)
+ if (ret)
pr_warning("Failed to register trace events module notifier\n");
return 0;
--
1.6.2.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ftrace: fix check for return value of register_module_notifier in event_trace_init
2009-05-20 17:26 [PATCH] ftrace: fix check for return value of register_module_notifier in event_trace_init Frederic Weisbecker
@ 2009-05-20 18:15 ` Ingo Molnar
0 siblings, 0 replies; 2+ messages in thread
From: Ingo Molnar @ 2009-05-20 18:15 UTC (permalink / raw)
To: Frederic Weisbecker; +Cc: Ming Lei, Steven Rostedt, Li Zefan, LKML
* Frederic Weisbecker <fweisbec@gmail.com> wrote:
> Hi Ingo,
>
> Here is a fixlet from Ming Lei which fixes a spurious warning.
>
> Thanks.
>
>
> The following changes since commit fd51d251e4cdb21f68e9dbc4336514d64a105a79:
> Stefan Raspl (1):
> blktrace: remove debugfs entries on bad path
>
> are available in the git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
> tracing/core
>
> Ming Lei (1):
> ftrace: fix check for return value of register_module_notifier in event_trace_init
>
> kernel/trace/trace_events.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
Pulled, thanks!
Ingo
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2009-05-20 17:26 [PATCH] ftrace: fix check for return value of register_module_notifier in event_trace_init Frederic Weisbecker
2009-05-20 18:15 ` Ingo Molnar
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