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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
| commit | 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch) | |
| tree | e9891aa6c295060d065adffd610c4f49ecf884f3 /tools/perf/util/trace-event-info.c | |
| parent | a71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff) | |
Linux-libre 4.3.2-gnu
Diffstat (limited to 'tools/perf/util/trace-event-info.c')
| -rw-r--r-- | tools/perf/util/trace-event-info.c | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c index eb7271601..22245986e 100644 --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -341,20 +341,14 @@ out: static int record_proc_kallsyms(void) { - unsigned int size; - const char *path = "/proc/kallsyms"; - struct stat st; - int ret, err = 0; - - ret = stat(path, &st); - if (ret < 0) { - /* not found */ - size = 0; - if (write(output_fd, &size, 4) != 4) - err = -EIO; - return err; - } - return record_file(path, 4); + unsigned long long size = 0; + /* + * Just to keep older perf.data file parsers happy, record a zero + * sized kallsyms file, i.e. do the same thing that was done when + * /proc/kallsyms (or something specified via --kallsyms, in a + * different path) couldn't be read. + */ + return write(output_fd, &size, 4) != 4 ? -EIO : 0; } static int record_ftrace_printk(void) |