linux-kernel - Re: [PATCH 15/15] perf tools: fix ppid in thread_

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Message-ID: <51C9BEA1.5000205@gmail.com>
Date:	Tue, 25 Jun 2013 10:00:33 -0600
From:	David Ahern <dsahern@...il.com>
To:	Adrian Hunter <adrian.hunter@...el.com>
CC:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 15/15] perf tools: fix ppid in thread__fork()

On 6/24/13 7:16 AM, Adrian Hunter wrote:
> ppid should be assigned to the parents pid.  Note
> 'thread__fork()'s only caller 'machine__process_fork_event()'
> ensures that the parents pid is set.
>
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>   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 e3d4a55..93f3eab 100644
> --- a/tools/perf/util/thread.c
> +++ b/tools/perf/util/thread.c
> @@ -85,7 +85,7 @@ int thread__fork(struct thread *self, struct thread *parent)
>   		if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
>   			return -ENOMEM;
>
> -	self->ppid = parent->tid;
> +	self->ppid = parent->pid_;

Confused. My patch uses parent->pid and that it what I see in acme's 
perf/core branch. When did this become parent->tid?

David

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