Messages in this thread | | | Date | Wed, 09 Oct 2013 10:21:12 -0600 | From | David Ahern <> | Subject | Re: [PATCH] perf: disable mmap2 support |
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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
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