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authorWang Nan <wangnan0@huawei.com>2016-02-22 10:10:36 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-02-22 17:02:44 +0100
commit95088a591e197610bd03f4059f5fdbe9e376425b (patch)
treeb48f2529838b72d00d2caba00bb0cfbf0bddd790 /tools/perf/util/parse-events.h
parentperf tools: Enable indices setting syntax for BPF map (diff)
downloadlinux-95088a591e197610bd03f4059f5fdbe9e376425b.tar.xz
linux-95088a591e197610bd03f4059f5fdbe9e376425b.zip
perf tools: Apply tracepoint event definition options to BPF script
Users can pass options to tracepoints defined in the BPF script. For example: # perf record -e ./test.c/no-inherit/ bash # dd if=/dev/zero of=/dev/null count=10000 # exit [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.022 MB perf.data (139 samples) ] (no-inherit works, only the sys_read issued by bash are captured, at least 10000 sys_read issued by dd are skipped.) test.c: #define SEC(NAME) __attribute__((section(NAME), used)) SEC("func=sys_read") int bpf_func__sys_read(void *ctx) { return 1; } char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; no-inherit is applied to the kprobe event defined in test.c. Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Cody P Schafer <dev@codyps.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kirill Smelkov <kirr@nexedi.com> Cc: Li Zefan <lizefan@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1456132275-98875-10-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-events.h')
-rw-r--r--tools/perf/util/parse-events.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index e4456221f52d..67e493088e81 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -146,7 +146,8 @@ int parse_events_load_bpf(struct parse_events_evlist *data,
struct bpf_object;
int parse_events_load_bpf_obj(struct parse_events_evlist *data,
struct list_head *list,
- struct bpf_object *obj);
+ struct bpf_object *obj,
+ struct list_head *head_config);
int parse_events_add_numeric(struct parse_events_evlist *data,
struct list_head *list,
u32 type, u64 config,