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From: Ingo Molnar <mingo@elte.hu>
To: Mike Frysinger <vapier.adi@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Mackerras <paulus@samba.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] scripts/checksyscalls.sh: only whine perf_counter_open when supported
Date: Sat, 13 Jun 2009 23:00:18 +0200	[thread overview]
Message-ID: <20090613210018.GA1962@elte.hu> (raw)
In-Reply-To: <8bd0f97a0906120829p628751e9gb557f6a14e98fae2@mail.gmail.com>


* Mike Frysinger <vapier.adi@gmail.com> wrote:

> On Fri, Jun 12, 2009 at 11:21, Ingo Molnar wrote:
> > * Mike Frysinger <vapier.adi@gmail.com> wrote:
> >> the perf counter code explicitly requires:
> >> ...
> >>  - support for atomic64 types (unless i missed something, x86 is the
> >> only 32bit system that supports these)
> >
> > A wrapper suffices - should probably be librarized into lib/.
> 
> wonder if we can trick Arnd into doing that ...

FYI, Paul has posted the patches for generic atomic64_t today.

So the barrier of entry to perfcounters enablement is really low 
now, even for 32-bit architectures without 64-bit atomic ops.

	Ingo

  parent reply	other threads:[~2009-06-13 21:06 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-12 11:29 [PATCH] scripts/checksyscalls.sh: only whine perf_counter_open when supported Mike Frysinger
2009-06-12 12:05 ` Ingo Molnar
2009-06-12 12:13   ` Mike Frysinger
2009-06-12 12:17     ` Ingo Molnar
2009-06-12 12:22       ` Mike Frysinger
2009-06-12 12:31         ` Ingo Molnar
2009-06-12 12:41           ` Mike Frysinger
2009-06-12 12:59             ` Ingo Molnar
2009-06-12 13:04               ` Mike Frysinger
2009-06-12 13:09                 ` Ingo Molnar
2009-06-12 13:21                   ` Mike Frysinger
2009-06-12 13:56                     ` Ingo Molnar
2009-06-12 15:25                       ` Alan Cox
2009-06-12 15:56                         ` Ingo Molnar
2009-06-12 16:57                       ` Ingo Molnar
2009-06-12 17:11                         ` Mike Frysinger
2009-06-12 13:34           ` Mike Frysinger
2009-06-12 15:16   ` Mike Frysinger
2009-06-12 15:21     ` Ingo Molnar
2009-06-12 15:29       ` Mike Frysinger
2009-06-12 15:50         ` Ingo Molnar
2009-06-13 21:00         ` Ingo Molnar [this message]
2009-06-13  4:37   ` Paul Mackerras
2009-06-13 10:48 ` Mike Frysinger
2009-06-14  9:37   ` Paul Mundt
2009-06-14  9:55     ` Mike Frysinger
2009-06-14 10:11       ` Paul Mundt
2009-06-14 10:55         ` Mike Frysinger
2009-06-14 11:20           ` Paul Mundt
2009-06-14 11:47             ` Mike Frysinger
2009-06-14 11:20           ` Sam Ravnborg
  -- strict thread matches above, loose matches on Subject: below --
2009-06-13 11:11 Mike Frysinger

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