Re: [PATCH] perf: disable mmap2 support

[David Ahern]

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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