Messages in this thread | | | From | Vince Weaver <> | Date | Mon, 23 Dec 2019 12:35:47 -0500 (EST) | Subject | Re: [PATCHSET 0/9] perf: Improve cgroup profiling (v3) |
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On Mon, 23 Dec 2019, Namhyung Kim wrote:
> This work is to improve cgroup profiling in perf. Currently it only > supports profiling tasks in a specific cgroup and there's no way to > identify which cgroup the current sample belongs to. So I added > PERF_SAMPLE_CGROUP to add cgroup id into each sample. It's a 64-bit > integer having file handle of the cgroup. And kernel also generates > PERF_RECORD_CGROUP event for new groups to correlate the cgroup id and > cgroup name (path in the cgroup filesystem). The cgroup id can be > read from userspace by name_to_handle_at() system call so it can > synthesize the CGROUP event for existing groups.
so is there a patch to the manpage that describes this new behavior in perf_event_open()?
Vince
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