linux-kernel - Re: [PATCH v0 14/71] perf tools: Add cpu to struct thread

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Message-ID: <52A8BD60.80300@gmail.com>
Date:	Wed, 11 Dec 2013 12:30:40 -0700
From:	David Ahern <dsahern@...il.com>
To:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
CC:	Ingo Molnar <mingo@...hat.com>, 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>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Adrian Hunter <adrian.hunter@...el.com>
Subject: Re: [PATCH v0 14/71] perf tools: Add cpu to struct thread

On 12/11/13, 5:36 AM, Alexander Shishkin wrote:

> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index 55f3608..52fbfb6 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -1412,3 +1412,29 @@ pid_t machine__get_thread_pid(struct machine *machine, pid_t tid)
>
>   	return thread->pid_;
>   }
> +
> +int machine__get_thread_cpu(struct machine *machine, pid_t tid, pid_t *pid)
> +{
> +	struct thread *thread = machine__find_thread(machine, tid);
> +
> +	if (!thread)
> +		return -1;
> +
> +	if (pid)
> +		*pid = thread->pid_;

Why is a 'get' function modifying the thread data?

David
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