diff options
Diffstat (limited to 'kernel/tools/perf/util/trace-event-info.c')
| -rw-r--r-- | kernel/tools/perf/util/trace-event-info.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/kernel/tools/perf/util/trace-event-info.c b/kernel/tools/perf/util/trace-event-info.c index eb7271601..d995743cb 100644 --- a/kernel/tools/perf/util/trace-event-info.c +++ b/kernel/tools/perf/util/trace-event-info.c @@ -38,7 +38,7 @@ #include "../perf.h" #include "trace-event.h" -#include <api/fs/debugfs.h> +#include <api/fs/tracing_path.h> #include "evsel.h" #include "debug.h" @@ -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) |