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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>, Ingo Molnar <mingo@kernel.org>,
	David Ahern <dsahern@gmail.com>, Jiri Olsa <jolsa@redhat.com>,
	Namhyung Kim <namhyung@gmail.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Question about barriers for ARM on tools/perf/
Date: Fri, 8 May 2015 11:52:55 -0300	[thread overview]
Message-ID: <20150508145255.GK7862@kernel.org> (raw)
In-Reply-To: <20150508143729.GJ7862@kernel.org>

Em Fri, May 08, 2015 at 11:37:29AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Fri, May 08, 2015 at 04:25:13PM +0200, Peter Zijlstra escreveu:
> > He wants to do smp refcounting, which needs atomic_inc() /
> > atomic_inc_non_zero() / atomic_dec_return() etc..
 
> Right, Will concentrated on what we use those barriers for right now in
> tools/perf.

So, for reference, and this just moves what was already in
tools/perf/perf-sys.h to a place that is named as the kernel is and when
what was used in perf-sys.h is the same as in the kernel, uses the same
kernel source excerpts:

https://git.kernel.org/cgit/linux/kernel/git/acme/linux.git/log/?h=tmp.perf/barrier

- Arnaldo

      parent reply	other threads:[~2015-05-08 14:53 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-08 14:04 Question about barriers for ARM on tools/perf/ Arnaldo Carvalho de Melo
2015-05-08 14:16 ` Peter Zijlstra
2015-05-08 14:21   ` Will Deacon
2015-05-08 14:23     ` Peter Zijlstra
2015-05-08 14:21 ` Will Deacon
2015-05-08 14:25   ` Peter Zijlstra
2015-05-08 14:27     ` Will Deacon
2015-05-08 14:36       ` David Ahern
2015-05-08 14:37     ` Arnaldo Carvalho de Melo
2015-05-08 14:48       ` Will Deacon
2015-05-08 14:57         ` Arnaldo Carvalho de Melo
2015-05-08 15:27           ` Peter Zijlstra
2015-05-08 16:45             ` Will Deacon
2015-05-08 18:18               ` Arnaldo Carvalho de Melo
2015-05-08 14:52       ` Arnaldo Carvalho de Melo [this message]

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