linux-kernel - [PATCH v3 5/6] perf tools: fix no return in non-void function

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Message-Id: <1347315303-29906-6-git-send-email-irina.tirdea@intel.com>
Date:	Tue, 11 Sep 2012 01:15:02 +0300
From:	Irina Tirdea <irina.tirdea@...il.com>
To:	mingo@...hat.com, acme@...stprotocols.net, a.p.zijlstra@...llo.nl,
	rostedt@...dmis.org
Cc:	paulus@...ba.org, dsahern@...il.com, namhyung.kim@....com,
	linux-kernel@...r.kernel.org, Irina Tirdea <irina.tirdea@...el.com>
Subject: [PATCH v3 5/6] perf tools: fix no return in non-void function

thread_func in builtin-sched.c has an internal loop and never returns.
The only return from this thread are BUG_ON calls in case return values
are not 0.

The compiler on Android complains that the function needs to return a
non-void value. Adding the noreturn function attribute to fix this error.

Error in Android:
target C: perf <= builtin-sched.c
hardware/intel/linu/tools/perf/builtin-sched.c: In function 'thread_func':
hardware/intel/linux/tools/perf/builtin-sched.c:476: error: no return
statement in function returning non-void

Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
Acked-by: Pekka Enberg <penberg@...nel.org>
---
 tools/perf/builtin-sched.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index a25a023..1fecc95 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -439,7 +439,7 @@ static u64 get_cpu_usage_nsec_self(int fd)
 	return runtime;
 }
 
-static void *thread_func(void *ctx)
+static __attribute__ ((noreturn)) void *thread_func(void *ctx)
 {
 	struct task_desc *this_task = ctx;
 	u64 cpu_usage_0, cpu_usage_1;
-- 
1.7.9.5

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