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.
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