diff options
Diffstat (limited to 'tools/perf/perf.c')
| -rw-r--r-- | tools/perf/perf.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index d3fc8090413c..921bee0a6437 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; } |