Commit-ID: 2cc990ba3af4f9511f0d016c73b8163591f890e7
Gitweb: http://git.kernel.org/tip/2cc990ba3af4f9511f0d016c73b8163591f890e7
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Thu, 22 Jan 2015 11:13:43 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 22 Jan 2015 17:02:20 -0300
tools lib fs debugfs: Introduce debugfs__strerror_open_tp
There will be other cases where not just a tracepoint event is being
opened below the debugfs mountpoint, but it is rather common, so provide
one helper for that.
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-q6e6zct49ql6nbcw8kkg0lbj@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/api/fs/debugfs.c | 9 +++++++++
tools/lib/api/fs/debugfs.h | 1 +
tools/perf/builtin-trace.c | 13 ++++++++-----
3 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c
index 5e8f391..bf9e216 100644
--- a/tools/lib/api/fs/debugfs.c
+++ b/tools/lib/api/fs/debugfs.c
@@ -125,3 +125,12 @@ int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename
return 0;
}
+
+int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name)
+{
+ char path[PATH_MAX];
+
+ snprintf(path, PATH_MAX, "tracing/events/%s/%s", sys, name ?: "*");
+
+ return debugfs__strerror_open(err, buf, size, path);
+}
diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h
index a1799ae..0739881 100644
--- a/tools/lib/api/fs/debugfs.h
+++ b/tools/lib/api/fs/debugfs.h
@@ -27,5 +27,6 @@ char *debugfs_mount(const char *mountpoint);
extern char debugfs_mountpoint[];
int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename);
+int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name);
#endif /* __API_DEBUGFS_H__ */
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index eaaa540..7e935f1 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2071,9 +2071,9 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
goto out_error_mem;
if (trace->sched &&
- perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
- trace__sched_stat_runtime))
- goto out_error_tp;
+ perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
+ trace__sched_stat_runtime))
+ goto out_error_sched_stat_runtime;
err = perf_evlist__create_maps(evlist, &trace->opts.target);
if (err < 0) {
@@ -2203,9 +2203,12 @@ out:
{
char errbuf[BUFSIZ];
-out_error_tp:
+out_error_sched_stat_runtime:
+ debugfs__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
+ goto out_error;
+
out_error_raw_syscalls:
- debugfs__strerror_open(errno, errbuf, sizeof(errbuf), "tracing/events/raw_syscalls");
+ debugfs__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
goto out_error;
out_error_mmap:
--
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