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| author | Robert Richter <robert.richter@amd.com> | 2011-11-25 15:05:25 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-12-12 08:44:00 -0200 |
| commit | 317df650c588bb9091b1fa0b5d726fe485aad88e (patch) | |
| tree | 64de022f7bce1c948e316c88fc67b8b543d56616 /tools | |
| parent | 38efb539c13f8f173e381435cdd40463ab5d38de (diff) | |
| download | linux-3.10-317df650c588bb9091b1fa0b5d726fe485aad88e.tar.gz linux-3.10-317df650c588bb9091b1fa0b5d726fe485aad88e.tar.bz2 linux-3.10-317df650c588bb9091b1fa0b5d726fe485aad88e.zip | |
perf script: Implement option for system-wide profiling
The option is documented in man perf-script but was not yet implemented:
-a
Force system-wide collection. Scripts run without a
<command> normally use -a by default, while scripts run
with a <command> normally don't - this option allows the
latter to be run in system-wide mode.
As with perf record you now can profile in system-wide mode for the
runtime of a given command, e.g.:
# perf script -a syscall-counts sleep 2
Cc: Ingo Molnar <mingo@elte.hu>
Link: http://lkml.kernel.org/r/1322229925-10075-1-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-script.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index ccbfd56d754..ea71c5e1a94 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -24,6 +24,7 @@ static u64 nr_unordered; extern const struct option record_options[]; static bool no_callchain; static bool show_full_info; +static bool system_wide; static const char *cpu_list; static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); @@ -1105,6 +1106,8 @@ static const struct option options[] = { OPT_CALLBACK('f', "fields", NULL, "str", "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr", parse_output_fields), + OPT_BOOLEAN('a', "all-cpus", &system_wide, + "system-wide collection from all CPUs"), OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", "only display events for these comms"), @@ -1134,7 +1137,6 @@ int cmd_script(int argc, const char **argv, const char *prefix __used) struct perf_session *session; char *script_path = NULL; const char **__argv; - bool system_wide; int i, j, err; setup_scripting(); @@ -1202,15 +1204,17 @@ int cmd_script(int argc, const char **argv, const char *prefix __used) } if (!pid) { - system_wide = true; j = 0; dup2(live_pipe[1], 1); close(live_pipe[0]); - if (!is_top_script(argv[0])) + if (is_top_script(argv[0])) { + system_wide = true; + } else if (!system_wide) { system_wide = !have_cmd(argc - rep_args, &argv[rep_args]); + } __argv = malloc((argc + 6) * sizeof(const char *)); if (!__argv) @@ -1258,10 +1262,11 @@ int cmd_script(int argc, const char **argv, const char *prefix __used) script_path = rep_script_path; if (script_path) { - system_wide = false; j = 0; - if (rec_script_path) + if (!rec_script_path) + system_wide = false; + else if (!system_wide) system_wide = !have_cmd(argc - 1, &argv[1]); __argv = malloc((argc + 2) * sizeof(const char *)); |