diff options
Diffstat (limited to 'tools/perf/builtin-ftrace.c')
| -rw-r--r-- | tools/perf/builtin-ftrace.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index d7fe00f66b831..f9906f52e4fa7 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -623,7 +623,7 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace) /* display column headers */ read_tracing_file_to_stdout("trace"); - if (!ftrace->initial_delay) { + if (!ftrace->target.initial_delay) { if (write_tracing_file("tracing_on", "1") < 0) { pr_err("can't enable tracing\n"); goto out_close_fd; @@ -632,8 +632,8 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace) evlist__start_workload(ftrace->evlist); - if (ftrace->initial_delay) { - usleep(ftrace->initial_delay * 1000); + if (ftrace->target.initial_delay > 0) { + usleep(ftrace->target.initial_delay * 1000); if (write_tracing_file("tracing_on", "1") < 0) { pr_err("can't enable tracing\n"); goto out_close_fd; @@ -1164,8 +1164,8 @@ int cmd_ftrace(int argc, const char **argv) "Size of per cpu buffer, needs to use a B, K, M or G suffix.", parse_buffer_size), OPT_BOOLEAN(0, "inherit", &ftrace.inherit, "Trace children processes"), - OPT_UINTEGER('D', "delay", &ftrace.initial_delay, - "Number of milliseconds to wait before starting tracing after program start"), + OPT_INTEGER('D', "delay", &ftrace.target.initial_delay, + "Number of milliseconds to wait before starting tracing after program start"), OPT_PARENT(common_options), }; const struct option latency_options[] = { @@ -1175,7 +1175,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_BOOLEAN('b', "use-bpf", &ftrace.target.use_bpf, "Use BPF to measure function latency"), #endif - OPT_BOOLEAN('n', "--use-nsec", &ftrace.use_nsec, + OPT_BOOLEAN('n', "use-nsec", &ftrace.use_nsec, "Use nano-second histogram"), OPT_PARENT(common_options), }; @@ -1228,10 +1228,12 @@ int cmd_ftrace(int argc, const char **argv) goto out_delete_filters; } + /* Make system wide (-a) the default target. */ + if (!argc && target__none(&ftrace.target)) + ftrace.target.system_wide = true; + switch (subcmd) { case PERF_FTRACE_TRACE: - if (!argc && target__none(&ftrace.target)) - ftrace.target.system_wide = true; cmd_func = __cmd_ftrace; break; case PERF_FTRACE_LATENCY: |