linux-kernel - [PATCH v1 3/7] bpf: Sync bpf_perf_event_aux

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Message-Id: <20241215193436.275278-4-leo.yan@arm.com>
Date: Sun, 15 Dec 2024 19:34:32 +0000
From: Leo Yan <leo.yan@....com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	James Clark <james.clark@...aro.org>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Eduard Zingerman <eddyz87@...il.com>,
	Song Liu <song@...nel.org>,
	Yonghong Song <yonghong.song@...ux.dev>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Hao Luo <haoluo@...gle.com>,
	Matt Bobrowski <mattbobrowski@...gle.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	bpf@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Mike Leach <mike.leach@...aro.org>
Cc: Leo Yan <leo.yan@....com>
Subject: [PATCH v1 3/7] bpf: Sync bpf_perf_event_aux_pause in tools UAPI bpf.h

As the new API bpf_perf_event_aux_pause has been added in the kernel
UAPI bpf.h.  Sync with tools UAPI bpf.h.

Signed-off-by: Leo Yan <leo.yan@....com>
---
 tools/include/uapi/linux/bpf.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 4162afc6b5d0..678278c91ce2 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -5795,6 +5795,26 @@ union bpf_attr {
  *		0 on success.
  *
  *		**-ENOENT** if the bpf_local_storage cannot be found.
+ *
+ * long bpf_perf_event_aux_pause(struct bpf_map *map, u64 flags, u32 pause)
+ *	Description
+ *		Pause or resume an AUX area trace associated to the perf event.
+ *
+ *		The *flags* argument is specified as the key value for
+ *		retrieving event pointer from the passed *map*.
+ *
+ *		The *pause* argument controls AUX trace pause or resume.
+ *		Non-zero values (true) are to pause the AUX trace and the zero
+ *		value (false) is for re-enabling the AUX trace.
+ *	Return
+ *		0 on success.
+ *
+ *		**-ENOENT** if not found event in the events map.
+ *
+ *		**-E2BIG** if the event index passed in the *flags* parameter
+ *		is out-of-range of the map.
+ *
+ *		**-EINVAL** if the flags passed is an invalid value.
  */
 #define ___BPF_FUNC_MAPPER(FN, ctx...)			\
 	FN(unspec, 0, ##ctx)				\
@@ -6009,6 +6029,7 @@ union bpf_attr {
 	FN(user_ringbuf_drain, 209, ##ctx)		\
 	FN(cgrp_storage_get, 210, ##ctx)		\
 	FN(cgrp_storage_delete, 211, ##ctx)		\
+	FN(perf_event_aux_pause, 212, ##ctx)		\
 	/* */
 
 /* backwards-compatibility macros for users of __BPF_FUNC_MAPPER that don't
-- 
2.34.1