linux-kernel - [PATCH bpf-next] libbpf: remove sample_period init in perf

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Message-Id: <20250423163901.2983689-1-chen.dylane@linux.dev>
Date: Thu, 24 Apr 2025 00:39:01 +0800
From: Tao Chen <chen.dylane@...ux.dev>
To: andrii@...nel.org,
	eddyz87@...il.com,
	ast@...nel.org,
	daniel@...earbox.net,
	martin.lau@...ux.dev,
	song@...nel.org,
	yonghong.song@...ux.dev,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org
Cc: bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Tao Chen <chen.dylane@...ux.dev>,
	Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH bpf-next] libbpf: remove sample_period init in perf_buffer

It seems that sample_period no used in perf buffer, actually only
wakeup_events valid about events aggregation for wakeup. So remove
it to avoid causing confusion.

Fixes: fb84b8224655 ("libbpf: add perf buffer API")
Acked-by: Jiri Olsa <jolsa@...nel.org>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Tao Chen <chen.dylane@...ux.dev>
---
 tools/lib/bpf/libbpf.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 194809da5172..1830e3c011a5 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -13306,7 +13306,6 @@ struct perf_buffer *perf_buffer__new(int map_fd, size_t page_cnt,
 	attr.config = PERF_COUNT_SW_BPF_OUTPUT;
 	attr.type = PERF_TYPE_SOFTWARE;
 	attr.sample_type = PERF_SAMPLE_RAW;
-	attr.sample_period = sample_period;
 	attr.wakeup_events = sample_period;
 
 	p.attr = &attr;
-- 
2.43.0