6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tao Chen chen.dylane@linux.dev
[ 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: fb84b8224655 ("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 --- 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 ca764ed3aaa91..18e96375dc319 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -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.type = PERF_TYPE_SOFTWARE; attr.sample_type = PERF_SAMPLE_RAW; - attr.sample_period = sample_period; attr.wakeup_events = sample_period;
p.attr = &attr;