linux-kernel - Re: [tree] Performance Counters for Linux, v7

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Message-ID: <20090323220630.GA12992@elte.hu>
Date:	Mon, 23 Mar 2009 23:06:30 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Wu Fengguang <fengguang.wu@...el.com>
Subject: Re: [tree] Performance Counters for Linux, v7


* Jaswinder Singh Rajput <jaswinder@...nel.org> wrote:

> On Sat, 2009-03-21 at 17:10 +0100, Ingo Molnar wrote:
> 
> > There's also been lots of updates to the userspace tools (kerneltop 
> > and perfstat):
> > 
> >    http://redhat.com/~mingo/perfcounters/kerneltop.c
> >    http://redhat.com/~mingo/perfcounters/perfstat.c
> > 
> 
> If possible, can we also prepare git tree for these userspace 
> tools by this way we can also look on logs and check incremental 
> changes otherwise we leads to:
> 
> [jaswinder@...v5 20090321]$ cc -O2 -g -lrt -Wall -W -o perfstat perfstat.c
> perfstat.c:57:40: error: include/linux/perf_counter.h: No such file or directory

to get the latest perfcounter tools, do this on latest -tip:

   cd Documentation/perf_counter/
   make

which will build the sample tools. kerneltop and perfstat has been 
unified into a single .c file by Wu Fengguang, with updates by Peter 
Zijstra.

	Ingo
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