From: Peter Zijlstra <peterz@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
mingo@elte.hu, Paul Mackerras <paulus@samba.org>,
Robert Richter <robert.richter@amd.com>,
Andi Kleen <andi@firstfloor.org>
Subject: Re: [BUG] perf_event: sampling buffer format cannot handle multi-event sampling
Date: Tue, 19 Apr 2011 23:20:56 +0200 [thread overview]
Message-ID: <1303248056.2035.66.camel@laptop> (raw)
In-Reply-To: <BANLkTi=GX3JGw-Dq+ejsCguV0A+9w2eCjQ@mail.gmail.com>
On Tue, 2011-04-19 at 21:16 +0000, Stephane Eranian wrote:
> > Or simply don't mix different sample_types in the same buffer?
> >
> Does the kernel disallow this when you merge the output via that
> ioctl()?
No, it will happily comply and provide you with hard to parse output.
Just don't do that if you're not willing to untangle it ;-)
next prev parent reply other threads:[~2011-04-19 21:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-19 19:10 [BUG] perf_event: sampling buffer format cannot handle multi-event sampling Stephane Eranian
2011-04-19 19:22 ` Peter Zijlstra
2011-04-19 21:16 ` Stephane Eranian
2011-04-19 21:20 ` Peter Zijlstra [this message]
2011-04-19 21:19 ` Stephane Eranian
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