From: David Ahern <dsahern@gmail.com>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, mingo@elte.hu,
peterz@infradead.org, acme@redhat.com, ak@linux.intel.com,
jolsa@redhat.com, hughd@google.com, keescook@chromium.org,
akpm@linux-foundation.org
Subject: Re: [PATCH] perf: disable mmap2 support
Date: Wed, 09 Oct 2013 10:21:12 -0600 [thread overview]
Message-ID: <52558278.6080206@gmail.com> (raw)
In-Reply-To: <20131009161743.GA3022@quad>
On 10/9/13 10:17 AM, Stephane Eranian wrote:
>
> This patch disables the mmap2 record format support
> for now. The support needs a bit more work to cover
> VM_CLONE cases.
>
> The patch leaves attr->mmap2 defined, but returns
> an error if it is set. That ensures no PERF_RECORD_MMAP2
> record can be generated. Yet it minimizes the reverts in
> the perf tool.
The userspace code generates MMAP2 events for synthesized mmap events.
That should be reverted to MMAP until the format of MMAP2 events is
finalized.
David
next prev parent reply other threads:[~2013-10-09 16:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-09 16:17 [PATCH] perf: disable mmap2 support Stephane Eranian
2013-10-09 16:21 ` David Ahern [this message]
2013-10-09 16:24 ` Stephane Eranian
2013-10-09 16:39 ` Stephane Eranian
2013-10-09 17:19 ` David Ahern
2013-10-09 17:40 ` Stephane Eranian
2013-10-09 18:03 ` David Ahern
2013-10-10 14:26 ` Arnaldo Carvalho de Melo
2013-10-11 18:40 ` David Ahern
2013-10-15 12:25 ` Stephane Eranian
2013-10-15 13:12 ` Ingo Molnar
2013-10-15 13:27 ` Stephane Eranian
2013-10-15 13:34 ` Ingo Molnar
2013-10-15 14:32 ` Stephane Eranian
2013-10-15 16:04 ` Ingo Molnar
2013-10-09 19:33 ` Arnaldo Carvalho de Melo
2013-10-10 4:56 ` Ingo Molnar
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