From: Jiri Olsa <olsajiri@gmail.com> To: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <olsajiri@gmail.com>, Tejun Heo <tj@kernel.org>, Zefan Li <lizefan.x@bytedance.com>, Johannes Weiner <hannes@cmpxchg.org>, cgroups <cgroups@vger.kernel.org>, Arnaldo Carvalho de Melo <acme@kernel.org>, LKML <linux-kernel@vger.kernel.org>, linux-perf-users <linux-perf-users@vger.kernel.org>, Song Liu <songliubraving@fb.com>, bpf <bpf@vger.kernel.org> Subject: Re: [PATCH] perf stat: Support old kernels for bperf cgroup counting Date: Sat, 1 Oct 2022 15:57:54 +0200 [thread overview] Message-ID: <YzhHYiTZf45dEWn0@krava> (raw) In-Reply-To: <CAM9d7cjKaZvWQUwGwoTLNzAgHS7ndL_V_5+O+WqMUvuHJ7cWNg@mail.gmail.com> On Fri, Sep 30, 2022 at 02:56:40PM -0700, Namhyung Kim 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 yea, wanted to try that.. I cherry-picked the 7f203bc89eb6 ;-) thanks, jirka > > Thanks,. > Namhyung
WARNING: multiple messages have this Message-ID (diff)
From: Jiri Olsa <olsajiri-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> To: Namhyung Kim <namhyung-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> Cc: Jiri Olsa <olsajiri-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Zefan Li <lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Arnaldo Carvalho de Melo <acme-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, linux-perf-users <linux-perf-users-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Song Liu <songliubraving-b10kYP2dOMg@public.gmane.org>, bpf <bpf-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> Subject: Re: [PATCH] perf stat: Support old kernels for bperf cgroup counting Date: Sat, 1 Oct 2022 15:57:54 +0200 [thread overview] Message-ID: <YzhHYiTZf45dEWn0@krava> (raw) In-Reply-To: <CAM9d7cjKaZvWQUwGwoTLNzAgHS7ndL_V_5+O+WqMUvuHJ7cWNg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> On Fri, Sep 30, 2022 at 02:56:40PM -0700, Namhyung Kim wrote: > Hi Jiri, > > On Fri, Sep 30, 2022 at 2:44 PM Jiri Olsa <olsajiri-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 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-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.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 yea, wanted to try that.. I cherry-picked the 7f203bc89eb6 ;-) thanks, jirka > > Thanks,. > Namhyung
next prev parent reply other threads:[~2022-10-01 13:58 UTC|newest] Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-07-29 19:05 [PATCH cgroup/for-5.20] cgroup: Replace cgroup->ancestor_ids[] with ->ancestors[] Tejun Heo 2022-07-29 19:05 ` Tejun Heo 2022-07-29 20:30 ` Namhyung Kim 2022-07-29 20:30 ` Namhyung Kim 2022-07-29 20:58 ` [PATCH v2 " Tejun Heo 2022-07-29 20:58 ` Tejun Heo 2022-07-29 22:42 ` Michal Koutný 2022-07-29 22:42 ` Michal Koutný 2022-07-29 23:02 ` Tejun Heo 2022-07-29 23:02 ` Tejun Heo 2022-07-29 23:10 ` [PATCH v3 " Tejun Heo 2022-08-15 21:17 ` Tejun Heo 2022-09-22 4:05 ` Namhyung Kim 2022-09-22 4:05 ` Namhyung Kim 2022-09-22 4:14 ` [PATCH] perf stat: Support old kernels for bperf cgroup counting Namhyung Kim 2022-09-22 4:14 ` Namhyung Kim 2022-09-24 3:22 ` Tejun Heo 2022-09-30 20:30 ` Namhyung Kim 2022-09-30 20:30 ` Namhyung Kim 2022-09-30 21:43 ` Jiri Olsa 2022-09-30 21:56 ` Namhyung Kim 2022-09-30 21:56 ` Namhyung Kim 2022-09-30 22:00 ` Arnaldo Carvalho de Melo 2022-09-30 22:00 ` Arnaldo Carvalho de Melo 2022-09-30 22:11 ` Namhyung Kim 2022-09-30 22:11 ` Namhyung Kim 2022-10-01 13:57 ` Jiri Olsa [this message] 2022-10-01 13:57 ` Jiri Olsa 2022-09-30 22:48 ` Andrii Nakryiko 2022-10-01 2:31 ` Namhyung Kim 2022-10-05 22:36 ` Andrii Nakryiko 2022-10-05 22:36 ` Andrii Nakryiko 2022-10-01 13:58 ` Jiri Olsa 2022-10-01 13:58 ` Jiri Olsa 2022-10-10 23:59 ` Tejun Heo 2022-10-11 5:24 ` Namhyung Kim 2022-10-11 5:24 ` Namhyung Kim 2022-10-11 5:28 ` [PATCH v2] " Namhyung Kim 2022-10-11 5:28 ` Namhyung Kim 2022-10-11 16:53 ` Tejun Heo 2022-10-14 13:27 ` Arnaldo Carvalho de Melo 2022-10-14 13:30 ` Arnaldo Carvalho de Melo 2022-10-14 13:30 ` Arnaldo Carvalho de Melo 2022-10-14 16:40 ` Tejun Heo 2022-10-14 16:40 ` Tejun Heo 2022-10-14 17:10 ` Arnaldo Carvalho de Melo 2022-10-14 17:10 ` Arnaldo Carvalho de Melo
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