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libbpf: Remove sample_period init in perf_buffer

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[ Upstream commit 64821d25f05ac468d435e61669ae745ce5a633ea ]

It seems that sample_period is not used in perf buffer. Actually, only
wakeup_events are meaningful to enable events aggregation for wakeup notification.
Remove sample_period setting code to avoid confusion.

Fixes: fb84b82246 ("libbpf: add perf buffer API")
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/bpf/20250423163901.2983689-1-chen.dylane@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tao Chen
2025-04-24 00:39:01 +08:00
committed by Greg Kroah-Hartman
parent 624b4cf6c4
commit 79669facfe
1 changed files with 0 additions and 1 deletions
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tools/lib/bpf/libbpf.c
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@@ -12453,7 +12453,6 @@ struct perf_buffer *perf_buffer__new(int map_fd, size_t page_cnt,
attr.config = PERF_COUNT_SW_BPF_OUTPUT; attr.config = PERF_COUNT_SW_BPF_OUTPUT;
attr.type = PERF_TYPE_SOFTWARE; attr.type = PERF_TYPE_SOFTWARE;
attr.sample_type = PERF_SAMPLE_RAW; attr.sample_type = PERF_SAMPLE_RAW;
attr.sample_period = sample_period;
attr.wakeup_events = sample_period; attr.wakeup_events = sample_period;
p.attr = &attr; p.attr = &attr;