linux-kernel - Re: [PATCH Not-for-merge 40/40] perf tools: Disable thread refcount due to bug

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Message-ID: <20150518012336.GB15972@kernel.org>
Date:	Sun, 17 May 2015 22:23:36 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH Not-for-merge 40/40] perf tools: Disable thread refcount
 due to bug

Em Mon, May 18, 2015 at 09:30:55AM +0900, Namhyung Kim escreveu:
> This makes thread mg sharing test failed due to not decrement
> thread->refcnt on thread__put().

I fixed this one already:

https://git.kernel.org/cgit/linux/kernel/git/acme/linux.git/commit/?h=perf/core&id=8b00f46951bed1edd9c5cb9d9adb62d28bbe7623

No?

- Arnaldo

 
> Not-signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/util/thread.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
> index 702f12dc5a90..dc5ec9a5cca1 100644
> --- a/tools/perf/util/thread.c
> +++ b/tools/perf/util/thread.c
> @@ -163,7 +163,7 @@ struct thread *thread__get(struct thread *thread)
>  
>  void thread__put(struct thread *thread)
>  {
> -	if (thread && atomic_dec_and_test(&thread->refcnt)) {
> +	if (thread && atomic_dec_and_test(&thread->refcnt) && 0) {
>  		if (!RB_EMPTY_NODE(&thread->rb_node)) {
>  			struct machine *machine = thread->mg->machine;
>  
> -- 
> 2.4.0
--
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