linux-kernel - Re: [PATCH] perf: add /proc/perf_events file for dump perf events info

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Message-ID: <50524A31.1080403@gmail.com>
Date:	Thu, 13 Sep 2012 15:03:45 -0600
From:	David Ahern <dsahern@...il.com>
To:	Jovi Zhang <bookjovi@...il.com>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf: add /proc/perf_events file for dump perf events
 info

On 7/5/12 7:02 AM, Jovi Zhang wrote:
>   From 91fbcca37a2c9979083f4b9a6fa9c1875fc2886f Mon Sep 17 00:00:00 2001
> From: Jovi Zhang <bookjovi@...il.com>
> Date: Fri, 6 Jul 2012 00:05:40 +0800
> Subject: [PATCH] perf: add /proc/perf_events file for dump perf events info
>
> This new /proc/perf_events file is used for real time dump all
> perf events info in whole system wide machine, this patch also add
> a new field perf_entry in struct perf_event, for connect to
> global list perf_events_list.

Applied your patch to see if sheds light on a problem. Saw this 
compiling the kernel:

kernel/events/proc_perf_events.c: In function ‘perf_events_proc_show’:
kernel/events/proc_perf_events.c:175:5: warning: format ‘%llu’ expects 
argument of type ‘long long unsigned int’, but argument 3 has type ‘long 
int’ [-Wformat]

David
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