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Sender: Tejun Heo <htejun@gmail.com>
Date:   Mon, 10 Oct 2022 13:59:20 -1000
From:   Tejun Heo <tj@kernel.org>
To:     Namhyung Kim <namhyung@kernel.org>
Cc:     Zefan Li <lizefan.x@bytedance.com>,
        Johannes Weiner <hannes@cmpxchg.org>, cgroups@vger.kernel.org,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Jiri Olsa <jolsa@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        linux-perf-users@vger.kernel.org, Song Liu <songliubraving@fb.com>,
        bpf@vger.kernel.org
Subject: Re: [PATCH] perf stat: Support old kernels for bperf cgroup counting
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 <20220922041435.709119-1-namhyung@kernel.org>
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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>

Looks like it's acked enough but the patch doesn't apply anymore. Namhyung,
can you please refresh the patch? I'll route this through
cgroup/for-6.1-fixes unless somebody objects.

Thanks.

-- 
tejun