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authorArnaldo Carvalho de Melo <acme@redhat.com>2013-10-17 12:07:58 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-10-17 14:35:20 -0300
commit6ef068cb8e77784431b6c80adc49d0b0a6a5df66 (patch)
tree8fa200b1faf042d580cd290c36a8d2e179043acf /tools/perf/builtin-trace.c
parentba209f856380891a6ea6cdb07b2b068faccbff73 (diff)
downloadop-kernel-dev-6ef068cb8e77784431b6c80adc49d0b0a6a5df66.zip
op-kernel-dev-6ef068cb8e77784431b6c80adc49d0b0a6a5df66.tar.gz
perf evlist: Introduce perf_evlist__strerror_tp method
Out of 'perf trace', should be used by other tools that uses tracepoints. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ramkumar Ramachandra <artagnon@gmail.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-lyvtxhchz4ga8fwht15x8wou@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c26
1 files changed, 5 insertions, 21 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index ec82895..78b0d6a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1814,27 +1814,11 @@ out:
trace->live = false;
return err;
out_error_tp:
- switch(errno) {
- case ENOENT:
- fputs("Error:\tUnable to find debugfs\n"
- "Hint:\tWas your kernel was compiled with debugfs support?\n"
- "Hint:\tIs the debugfs filesystem mounted?\n"
- "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'\n",
- trace->output);
- break;
- case EACCES:
- fprintf(trace->output,
- "Error:\tNo permissions to read %s/tracing/events/raw_syscalls\n"
- "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n",
- debugfs_mountpoint, debugfs_mountpoint);
- break;
- default: {
- char bf[256];
- fprintf(trace->output, "Can't trace: %s\n",
- strerror_r(errno, bf, sizeof(bf)));
- }
- break;
- }
+{
+ char errbuf[BUFSIZ];
+ perf_evlist__strerror_tp(evlist, errno, errbuf, sizeof(errbuf));
+ fprintf(trace->output, "%s\n", errbuf);
+}
goto out_delete_evlist;
}
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