linux.git (original) (raw)

The record option is a convience alias to include the -e raw_syscalls:* argument to perf-record. All other options are passed to perf-record's handler. Resulting data file can be analyzed by perf-trace -i. Signed-off-by: David Ahern dsahern@gmail.com Cc: Frederic Weisbecker fweisbec@gmail.com Cc: Ingo Molnar mingo@kernel.org Cc: Jiri Olsa jolsa@redhat.com Cc: Namhyung Kim namhyung.kim@lge.com Cc: Peter Zijlstra a.p.zijlstra@chello.nl Cc: Stephane Eranian eranian@google.com Link: http://lkml.kernel.org/r/1380395584-9025-5-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo acme@redhat.com

@@ -9,6 +9,7 @@ SYNOPSIS

--------

[verse]

'perf trace'

+'perf trace record'

DESCRIPTION

-----------

@@ -16,9 +17,14 @@ This command will show the events associated with the target, initially

syscalls, but other system events like pagefaults, task lifetime events,

scheduling events, etc.

-Initially this is a live mode only tool, but eventually will work with

-perf.data files like the other tools, allowing a detached 'record' from

-analysis phases.

+This is a live mode tool in addition to working with perf.data files like

+the other perf tools. Files can be generated using the 'perf record' command

+but the session needs to include the raw_syscalls events (-e 'raw_syscalls:*').

+Alernatively, the 'perf trace record' can be used as a shortcut to

+automatically include the raw_syscalls events when writing events to a file.

+The following options apply to perf trace; options to perf trace record are

+found in the perf record man page.

OPTIONS

-------

@@ -1501,6 +1501,33 @@ static int parse_target_str(struct trace *trace)

return 0;

}

+static int trace__record(int argc, const char **argv)

+ unsigned int rec_argc, i, j;

+ const char **rec_argv;

+ const char * const record_args[] = {

+ "record",

+ "-R",

+ "-m", "1024",

+ "-c", "1",

+ "-e", "raw_syscalls:sys_enter,raw_syscalls:sys_exit",

+ };

+ rec_argc = ARRAY_SIZE(record_args) + argc;

+ rec_argv = calloc(rec_argc + 1, sizeof(char *));

+ if (rec_argv == NULL)

+ return -ENOMEM;

+ for (i = 0; i < ARRAY_SIZE(record_args); i++)

+ rec_argv[i] = record_args[i];

+ for (j = 0; j < (unsigned int)argc; j++, i++)

+ rec_argv[i] = argv[j];

+ return cmd_record(i, rec_argv, NULL);

static int trace__run(struct trace *trace, int argc, const char **argv)

{

struct perf_evlist *evlist = perf_evlist__new();

@@ -1788,6 +1815,8 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)

const char * const trace_usage[] = {

"perf trace [] []",

"perf trace [] -- []",

+ "perf trace record [] []",

+ "perf trace record [] -- []",

NULL

};

struct trace trace = {

@@ -1844,6 +1873,9 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)

int err;

char bf[BUFSIZ];

+ if ((argc > 1) && (strcmp(argv[1], "record") == 0))

+ return trace__record(argc-2, &argv[2]);

argc = parse_options(argc, argv, trace_options, trace_usage, 0);

if (output_name != NULL) {