Namhyung Kim f21cb52036 perf stat: Support old kernels for bperf cgroup counting ... 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> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Song Liu <songliubraving@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: bpf@vger.kernel.org Cc: cgroups@vger.kernel.org Cc: zefan li <lizefan.x@bytedance.com> Link: http://lore.kernel.org/lkml/20221011052808.282394-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2022-10-14 10:29:05 -03:00
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.gitignore
bperf_cgroup.bpf.c	perf stat: Support old kernels for bperf cgroup counting	2022-10-14 10:29:05 -03:00
bperf_follower.bpf.c	perf bpf_skel: Do not use typedef to avoid error on old clang	2021-12-06 21:57:53 -03:00
bperf_leader.bpf.c	perf bpf_skel: Do not use typedef to avoid error on old clang	2021-12-06 21:57:53 -03:00
bperf_u.h	perf stat: Introduce 'bperf' to share hardware PMCs with BPF	2021-03-23 17:46:44 -03:00
bpf_prog_profiler.bpf.c	perf bpf: Fix building perf with BUILD_BPF_SKEL=1 by default in more distros	2021-12-06 21:57:53 -03:00
func_latency.bpf.c	perf ftrace latency: Add -n/--use-nsec option	2022-03-22 17:43:46 -03:00
kwork_trace.bpf.c	perf kwork: Add workqueue trace BPF support	2022-07-26 16:31:54 -03:00
lock_contention.bpf.c	perf lock contention: Fix a build error on 32-bit	2022-10-06 08:03:51 -03:00
off_cpu.bpf.c	perf tools: Get a perf cgroup more portably in BPF	2022-09-26 10:05:50 -03:00