linux-kernel - Re: perf error codes

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Message-ID: <CAMsRxfKPQ8gBp3TdDUS9MmB5KB1yhtJw5CqJw+coFRXGcwMDWQ@mail.gmail.com>
Date:	Tue, 12 Jul 2011 13:09:31 +0000
From:	stephane eranian <eranian@...glemail.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Vince Weaver <vweaver1@...s.utk.edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, paulus <paulus@...ba.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: perf error codes

Hi,

On Tue, Jul 12, 2011 at 8:41 AM, Peter Zijlstra <peterz@...radead.org> wrote:
> Hi Stephane, Vince,
>
> Linus recently expressed dislike of our -ENOSPC usage for indicating the
> pmu is 'full'. Do either of your projects (libpfm, libpapi resp.) rely
> on this particular error code for this condition?
>
libpfm does not make perf syscalls. It would not be impacted
by a change in the error code.

I wonder what other meaningful code you might be able to use, though.

Thanks for asking.


>
>
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