bpf: Count missed stats in trace_call_bpf
authorJiri Olsa <jolsa@kernel.org>
Wed, 20 Sep 2023 21:31:40 +0000 (23:31 +0200)
committerAndrii Nakryiko <andrii@kernel.org>
Mon, 25 Sep 2023 23:37:44 +0000 (16:37 -0700)
commitdd8657894c11b03c6eb0fd53fe9d7fec2072d18b
treec6c5d419041eae87c27d6c164c237a08589a8994
parent3acf8ace68230e9558cf916847f1cc9f208abdf1
bpf: Count missed stats in trace_call_bpf

Increase misses stats in case bpf array execution is skipped
because of recursion check in trace_call_bpf.

Adding bpf_prog_inc_misses_counters that increase misses
counts for all bpf programs in bpf_prog_array.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Song Liu <song@kernel.org>
Reviewed-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/bpf/20230920213145.1941596-5-jolsa@kernel.org
include/linux/bpf.h
kernel/trace/bpf_trace.c