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hbt/bpf: Extend BPerfEventsGroupPerThreadTest to test time values #310

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liu-song-6
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Summary: Test monoTime and runTime against clock_gettime()

Differential Revision: D63996322

Summary:
Two major fixes here:
1. Make a copy of bperf_thread_data in seqlock'ed region and use the copy
   later. This makes sure the data in a sample is consistent.
2. Fix schedin_time and runtime_since_schedin, so that the runtime is
   accounted correctly. Before this fix, there was double accounting in
   some corner cases.

Also add a commont to enable() to explain the check for mapping the same
tid twice. I got confused myself when reading the code.

Differential Revision: D63996323
Summary: Test monoTime and runTime against clock_gettime()

Differential Revision: D63996322
@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Oct 7, 2024
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This pull request was exported from Phabricator. Differential Revision: D63996322

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This pull request has been merged in 58218bc.

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2 participants