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perf bpf filter: Fix a broken perf sample data naming for BPF CO-RE

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BPF CO-RE requires 3 underscores for the ignored suffix rule but it
mistakenly used only 2.  Let's fix it.

Fixes: 3a8b8fc317 ("perf bpf filter: Support pre-5.16 kernels where 'mem_hops' isn't in 'union perf_mem_data_src'")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230525000307.3202449-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2023-05-24 17:03:07 -07:00 committed by Arnaldo Carvalho de Melo
parent 8d73259ef2
commit 690917c647
1 changed files with 2 additions and 2 deletions
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4
tools/perf/util/bpf_skel/sample_filter.bpf.c
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@ -25,7 +25,7 @@ struct perf_sample_data___new {
} __attribute__((preserve_access_index));
/* new kernel perf_mem_data_src definition */
union perf_mem_data_src__new {
union perf_mem_data_src___new {
__u64 val;
struct {
__u64 mem_op:5, /* type of opcode */
@ -108,7 +108,7 @@ static inline __u64 perf_get_sample(struct bpf_perf_event_data_kern *kctx,
if (entry->part == 7)
return kctx->data->data_src.mem_blk;
if (entry->part == 8) {
union perf_mem_data_src__new *data = (void *)&kctx->data->data_src;
union perf_mem_data_src___new *data = (void *)&kctx->data->data_src;
if (bpf_core_field_exists(data->mem_hops))
return data->mem_hops;