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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-10-17 12:07:58 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-10-17 14:35:20 -0300 |
commit | 6ef068cb8e77784431b6c80adc49d0b0a6a5df66 (patch) | |
tree | 8fa200b1faf042d580cd290c36a8d2e179043acf /tools/perf | |
parent | ba209f856380891a6ea6cdb07b2b068faccbff73 (diff) | |
download | op-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')
-rw-r--r-- | tools/perf/builtin-trace.c | 26 | ||||
-rw-r--r-- | tools/perf/util/evlist.c | 27 | ||||
-rw-r--r-- | tools/perf/util/evlist.h | 2 |
3 files changed, 34 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; } diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index cb9523f..6737420 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1126,3 +1126,30 @@ size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp) return printed + fprintf(fp, "\n");; } + +int perf_evlist__strerror_tp(struct perf_evlist *evlist __maybe_unused, + int err, char *buf, size_t size) +{ + char sbuf[128]; + + switch (err) { + case ENOENT: + scnprintf(buf, size, "%s", + "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'"); + break; + case EACCES: + scnprintf(buf, size, + "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: + scnprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf))); + break; + } + + return 0; +} diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 722618f..386de10 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -168,6 +168,8 @@ static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist) size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp); +int perf_evlist__strerror_tp(struct perf_evlist *evlist, int err, char *buf, size_t size); + static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm) { struct perf_event_mmap_page *pc = mm->base; |