linux-kernel - [PATCH 3/4] perf tools: Move common bpf functions to bpf

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Message-Id: <20210625071826.608504-4-namhyung@kernel.org>
Date:   Fri, 25 Jun 2021 00:18:25 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Song Liu <songliubraving@...com>
Subject: [PATCH 3/4] perf tools: Move common bpf functions to bpf_counter.h

Some helper functions will be used for cgroup counting too.
Move them to a header file for sharing.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/bpf_counter.c | 52 -----------------------------------
 tools/perf/util/bpf_counter.h | 52 +++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 52 deletions(-)

diff --git a/tools/perf/util/bpf_counter.c b/tools/perf/util/bpf_counter.c
index 974f10e356f0..1af81e882eb6 100644
--- a/tools/perf/util/bpf_counter.c
+++ b/tools/perf/util/bpf_counter.c
@@ -7,12 +7,8 @@
 #include <unistd.h>
 #include <sys/file.h>
 #include <sys/time.h>
-#include <sys/resource.h>
 #include <linux/err.h>
 #include <linux/zalloc.h>
-#include <bpf/bpf.h>
-#include <bpf/btf.h>
-#include <bpf/libbpf.h>
 #include <api/fs/fs.h>
 #include <perf/bpf_perf.h>
 
@@ -37,13 +33,6 @@ static inline void *u64_to_ptr(__u64 ptr)
 	return (void *)(unsigned long)ptr;
 }
 
-static void set_max_rlimit(void)
-{
-	struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
-
-	setrlimit(RLIMIT_MEMLOCK, &rinf);
-}
-
 static struct bpf_counter *bpf_counter_alloc(void)
 {
 	struct bpf_counter *counter;
@@ -297,33 +286,6 @@ struct bpf_counter_ops bpf_program_profiler_ops = {
 	.install_pe = bpf_program_profiler__install_pe,
 };
 
-static __u32 bpf_link_get_id(int fd)
-{
-	struct bpf_link_info link_info = {0};
-	__u32 link_info_len = sizeof(link_info);
-
-	bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
-	return link_info.id;
-}
-
-static __u32 bpf_link_get_prog_id(int fd)
-{
-	struct bpf_link_info link_info = {0};
-	__u32 link_info_len = sizeof(link_info);
-
-	bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
-	return link_info.prog_id;
-}
-
-static __u32 bpf_map_get_id(int fd)
-{
-	struct bpf_map_info map_info = {0};
-	__u32 map_info_len = sizeof(map_info);
-
-	bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
-	return map_info.id;
-}
-
 static bool bperf_attr_map_compatible(int attr_map_fd)
 {
 	struct bpf_map_info map_info = {0};
@@ -385,20 +347,6 @@ static int bperf_lock_attr_map(struct target *target)
 	return map_fd;
 }
 
-/* trigger the leader program on a cpu */
-static int bperf_trigger_reading(int prog_fd, int cpu)
-{
-	DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
-			    .ctx_in = NULL,
-			    .ctx_size_in = 0,
-			    .flags = BPF_F_TEST_RUN_ON_CPU,
-			    .cpu = cpu,
-			    .retval = 0,
-		);
-
-	return bpf_prog_test_run_opts(prog_fd, &opts);
-}
-
 static int bperf_check_target(struct evsel *evsel,
 			      struct target *target,
 			      enum bperf_filter_type *filter_type,
diff --git a/tools/perf/util/bpf_counter.h b/tools/perf/util/bpf_counter.h
index d6d907c3dcf9..185555a9c1db 100644
--- a/tools/perf/util/bpf_counter.h
+++ b/tools/perf/util/bpf_counter.h
@@ -3,6 +3,10 @@
 #define __PERF_BPF_COUNTER_H 1
 
 #include <linux/list.h>
+#include <sys/resource.h>
+#include <bpf/bpf.h>
+#include <bpf/btf.h>
+#include <bpf/libbpf.h>
 
 struct evsel;
 struct target;
@@ -76,4 +80,52 @@ static inline int bpf_counter__install_pe(struct evsel *evsel __maybe_unused,
 
 #endif /* HAVE_BPF_SKEL */
 
+static inline void set_max_rlimit(void)
+{
+	struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
+
+	setrlimit(RLIMIT_MEMLOCK, &rinf);
+}
+
+static inline __u32 bpf_link_get_id(int fd)
+{
+	struct bpf_link_info link_info = {0};
+	__u32 link_info_len = sizeof(link_info);
+
+	bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
+	return link_info.id;
+}
+
+static inline __u32 bpf_link_get_prog_id(int fd)
+{
+	struct bpf_link_info link_info = {0};
+	__u32 link_info_len = sizeof(link_info);
+
+	bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
+	return link_info.prog_id;
+}
+
+static inline __u32 bpf_map_get_id(int fd)
+{
+	struct bpf_map_info map_info = {0};
+	__u32 map_info_len = sizeof(map_info);
+
+	bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
+	return map_info.id;
+}
+
+/* trigger the leader program on a cpu */
+static inline int bperf_trigger_reading(int prog_fd, int cpu)
+{
+	DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
+			    .ctx_in = NULL,
+			    .ctx_size_in = 0,
+			    .flags = BPF_F_TEST_RUN_ON_CPU,
+			    .cpu = cpu,
+			    .retval = 0,
+		);
+
+	return bpf_prog_test_run_opts(prog_fd, &opts);
+}
+
 #endif /* __PERF_BPF_COUNTER_H */
-- 
2.32.0.93.g670b81a890-goog