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-rw-r--r--tools/perf/perf.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index d3fc809041..921bee0a64 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -39,6 +39,7 @@
#include <linux/zalloc.h>
static int use_pager = -1;
+static FILE *debug_fp = NULL;
struct cmd_struct {
const char *cmd;
@@ -162,6 +163,19 @@ static void commit_pager_choice(void)
}
}
+static int set_debug_file(const char *path)
+{
+ debug_fp = fopen(path, "w");
+ if (!debug_fp) {
+ fprintf(stderr, "Open debug file '%s' failed: %s\n",
+ path, strerror(errno));
+ return -1;
+ }
+
+ debug_set_file(debug_fp);
+ return 0;
+}
+
struct option options[] = {
OPT_ARGUMENT("help", "help"),
OPT_ARGUMENT("version", "version"),
@@ -174,6 +188,7 @@ struct option options[] = {
OPT_ARGUMENT("list-cmds", "list-cmds"),
OPT_ARGUMENT("list-opts", "list-opts"),
OPT_ARGUMENT("debug", "debug"),
+ OPT_ARGUMENT("debug-file", "debug-file"),
OPT_END()
};
@@ -287,6 +302,18 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
(*argv)++;
(*argc)--;
+ } else if (!strcmp(cmd, "--debug-file")) {
+ if (*argc < 2) {
+ fprintf(stderr, "No path given for --debug-file.\n");
+ usage(perf_usage_string);
+ }
+
+ if (set_debug_file((*argv)[1]))
+ usage(perf_usage_string);
+
+ (*argv)++;
+ (*argc)--;
+
} else {
fprintf(stderr, "Unknown option: %s\n", cmd);
usage(perf_usage_string);
@@ -547,5 +574,8 @@ int main(int argc, const char **argv)
fprintf(stderr, "Failed to run command '%s': %s\n",
cmd, str_error_r(errno, sbuf, sizeof(sbuf)));
out:
+ if (debug_fp)
+ fclose(debug_fp);
+
return 1;
}