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@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-q6e6zct49ql6nbcw8kkg0lbj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 8 insertions, 5 deletions

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index eaaa540bf1f3..7e935f1083ec 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: