Namhyung Kim d6838ec44b perf offcpu: Fix build failure on old kernels ... Old kernels have a 'struct task_struct' which contains a "state" field and newer kernels have "__state" instead. While the get_task_state() in the BPF code handles that in some way, it assumed the current kernel has the new definition and it caused a build error on old kernels. We should not assume anything and access them carefully. Do not use 'task struct' directly access it instead using new and old definitions in a row. Fixes: edc41a1099 ("perf record: Enable off-cpu analysis with BPF") Reported-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Blake Jones <blakejones@google.com> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: bpf@vger.kernel.org Link: http://lore.kernel.org/lkml/20220624231313.367909-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2022-06-28 11:41:26 -03:00
..
.gitignore
bperf_cgroup.bpf.c	perf stat: Enable BPF counter with --for-each-cgroup	2021-07-05 14:16:57 -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
off_cpu.bpf.c	perf offcpu: Fix build failure on old kernels	2022-06-28 11:41:26 -03:00