linux-kernel - [PATCH][GIT PULL] tracing: Fix return of trace_dump

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Date:	Mon, 14 Dec 2009 16:44:34 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH][GIT PULL] tracing: Fix return of trace_dump_stack()


Ingo,

Please pull the latest tip/tracing/urgent tree, which can be found at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
tip/tracing/urgent


Steven Rostedt (1):
      tracing: Fix return of trace_dump_stack()

----
 include/linux/kernel.h |    1 +
 kernel/trace/trace.c   |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---------------------------
commit aa43d935e677296088fb9b9c2060abbad0ccf648
Author: Steven Rostedt <srostedt@...hat.com>
Date:   Mon Dec 14 15:58:33 2009 -0500

    tracing: Fix return of trace_dump_stack()
    
    The trace_dump_stack() returned a value for a void function.
    
    Also, added the missing stub for trace_dump_stack() when tracing is
    not configured.
    
    Reported-by: Ingo Molnar <mingo@...e.hu>
    LKML-Reference: <20091214162713.GA31060@...e.hu>
    Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 5ad4199..f1dc752 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -527,6 +527,7 @@ trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 static inline void tracing_start(void) { }
 static inline void tracing_stop(void) { }
 static inline void ftrace_off_permanent(void) { }
+static inline void trace_dump_stack(void) { }
 static inline int
 trace_printk(const char *fmt, ...)
 {
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index f531301..1cf8734 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1159,7 +1159,7 @@ void trace_dump_stack(void)
 	unsigned long flags;
 
 	if (tracing_disabled || tracing_selftest_running)
-		return 0;
+		return;
 
 	local_save_flags(flags);
 


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