Messages in this thread | | | Date | Fri, 30 Sep 2022 19:00:42 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf stat: Support old kernels for bperf cgroup counting |
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On September 30, 2022 6:56:40 PM GMT-03:00, Namhyung Kim <namhyung@kernel.org> wrote: >Hi Jiri, > >On Fri, Sep 30, 2022 at 2:44 PM Jiri Olsa <olsajiri@gmail.com> wrote: >> >> On Wed, Sep 21, 2022 at 09:14:35PM -0700, Namhyung Kim wrote: >> > The recent change in the cgroup will break the backward compatiblity in >> > the BPF program. It should support both old and new kernels using BPF >> > CO-RE technique. >> > >> > Like the task_struct->__state handling in the offcpu analysis, we can >> > check the field name in the cgroup struct. >> > >> > Signed-off-by: Namhyung Kim <namhyung@kernel.org> >> > --- >> > Arnaldo, I think this should go through the cgroup tree since it depends >> > on the earlier change there. I don't think it'd conflict with other >> > perf changes but please let me know if you see any trouble, thanks! >> >> could you please paste the cgroup tree link? > >Do you mean this? > > https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git >
Which branch and cset in that tree does you perf skel depends on?
- Arnaldo >Thanks,. >Namhyung
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