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Message-ID: <20120213183232.GD15955@infradead.org>
Date: Mon, 13 Feb 2012 16:32:32 -0200
From: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To: Namhyung Kim <namhyung.kim@....com>
Cc: Namhyung Kim <namhyung@...il.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/11] perf tools: Introduce struct perf_maps_opts
Em Mon, Feb 13, 2012 at 04:27:33PM +0900, Namhyung Kim escreveu:
> The perf_maps_opts struct will be used for taking care of cpu/thread
> maps based on user's input. Since it is used on various subcommands
> it'd be better factoring it out.
I think 'struct perf_target' is a better name than 'struct
perf_maps_opts'.
Then you can remove the 'target_' prefix from pid and tid:
struct perf_target {
pid_t pid;
pid_t tid;
uid_t uid;
const char *cpu_list;
const char *uid_str;
bool system_wide;
};
Also bear in mind that this patch will clash with David Ahern's patch
for supporting pid and tid lists, I'll try to integrate it today and
then you can work on top of it in my perf/core branch, ok?
Now to the other patches...
- Arnaldo
> Signed-off-by: Namhyung Kim <namhyung.kim@....com>
> ---
> tools/perf/builtin-record.c | 46 +++++++++++++++++++++++-------------------
> tools/perf/builtin-test.c | 11 ++++++---
> tools/perf/perf.h | 11 +++++++--
> tools/perf/util/evlist.c | 3 +-
> tools/perf/util/evsel.c | 9 ++++---
> 5 files changed, 47 insertions(+), 33 deletions(-)
>
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index f8d9a545dd6e..7b50316136bf 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -44,7 +44,6 @@ struct perf_record {
> struct perf_evlist *evlist;
> struct perf_session *session;
> const char *progname;
> - const char *uid_str;
> int output;
> unsigned int page_size;
> int realtime_prio;
> @@ -215,7 +214,7 @@ try_again:
> if (err == EPERM || err == EACCES) {
> ui__error_paranoid();
> exit(EXIT_FAILURE);
> - } else if (err == ENODEV && opts->cpu_list) {
> + } else if (err == ENODEV && opts->maps.cpu_list) {
> die("No such device - did you specify"
> " an out-of-range profile CPU?\n");
> } else if (err == EINVAL && opts->sample_id_all_avail) {
> @@ -564,7 +563,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
> perf_session__process_machines(session, tool,
> perf_event__synthesize_guest_os);
>
> - if (!opts->system_wide)
> + if (!opts->maps.system_wide)
> perf_event__synthesize_thread_map(tool, evsel_list->threads,
> process_synthesized_event,
> machine);
> @@ -645,8 +644,10 @@ static const char * const record_usage[] = {
> */
> static struct perf_record record = {
> .opts = {
> - .target_pid = -1,
> - .target_tid = -1,
> + .maps = {
> + .target_pid = -1,
> + .target_tid = -1,
> + },
> .mmap_pages = UINT_MAX,
> .user_freq = UINT_MAX,
> .user_interval = ULLONG_MAX,
> @@ -670,9 +671,9 @@ const struct option record_options[] = {
> parse_events_option),
> OPT_CALLBACK(0, "filter", &record.evlist, "filter",
> "event filter", parse_filter),
> - OPT_INTEGER('p', "pid", &record.opts.target_pid,
> + OPT_INTEGER('p', "pid", &record.opts.maps.target_pid,
> "record events on existing process id"),
> - OPT_INTEGER('t', "tid", &record.opts.target_tid,
> + OPT_INTEGER('t', "tid", &record.opts.maps.target_tid,
> "record events on existing thread id"),
> OPT_INTEGER('r', "realtime", &record.realtime_prio,
> "collect data with this RT SCHED_FIFO priority"),
> @@ -680,11 +681,11 @@ const struct option record_options[] = {
> "collect data without buffering"),
> OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples,
> "collect raw sample records from all opened counters"),
> - OPT_BOOLEAN('a', "all-cpus", &record.opts.system_wide,
> + OPT_BOOLEAN('a', "all-cpus", &record.opts.maps.system_wide,
> "system-wide collection from all CPUs"),
> OPT_BOOLEAN('A', "append", &record.append_file,
> "append to the output file to do incremental profiling"),
> - OPT_STRING('C', "cpu", &record.opts.cpu_list, "cpu",
> + OPT_STRING('C', "cpu", &record.opts.maps.cpu_list, "cpu",
> "list of cpus to monitor"),
> OPT_BOOLEAN('f', "force", &record.force,
> "overwrite existing data file (deprecated)"),
> @@ -718,7 +719,7 @@ const struct option record_options[] = {
> OPT_CALLBACK('G', "cgroup", &record.evlist, "name",
> "monitor event in cgroup name only",
> parse_cgroups),
> - OPT_STRING('u', "uid", &record.uid_str, "user", "user to profile"),
> + OPT_STRING('u', "uid", &record.opts.maps.uid_str, "user", "user to profile"),
> OPT_END()
> };
>
> @@ -739,8 +740,10 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
>
> argc = parse_options(argc, argv, record_options, record_usage,
> PARSE_OPT_STOP_AT_NON_OPTION);
> - if (!argc && rec->opts.target_pid == -1 && rec->opts.target_tid == -1 &&
> - !rec->opts.system_wide && !rec->opts.cpu_list && !rec->uid_str)
> + if (!argc && rec->opts.maps.target_pid == -1 &&
> + rec->opts.maps.target_tid == -1 &&
> + !rec->opts.maps.system_wide && !rec->opts.maps.cpu_list &&
> + !rec->opts.maps.uid_str)
> usage_with_options(record_usage, record_options);
>
> if (rec->force && rec->append_file) {
> @@ -753,7 +756,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
> rec->write_mode = WRITE_FORCE;
> }
>
> - if (nr_cgroups && !rec->opts.system_wide) {
> + if (nr_cgroups && !rec->opts.maps.system_wide) {
> fprintf(stderr, "cgroup monitoring only available in"
> " system-wide mode\n");
> usage_with_options(record_usage, record_options);
> @@ -780,17 +783,18 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
> goto out_symbol_exit;
> }
>
> - rec->opts.uid = parse_target_uid(rec->uid_str, rec->opts.target_tid,
> - rec->opts.target_pid);
> - if (rec->uid_str != NULL && rec->opts.uid == UINT_MAX - 1)
> + rec->opts.maps.uid = parse_target_uid(rec->opts.maps.uid_str,
> + rec->opts.maps.target_tid,
> + rec->opts.maps.target_pid);
> + if (rec->opts.maps.uid_str && rec->opts.maps.uid == UINT_MAX - 1)
> goto out_free_fd;
>
> - if (rec->opts.target_pid != -1)
> - rec->opts.target_tid = rec->opts.target_pid;
> + if (rec->opts.maps.target_pid != -1)
> + rec->opts.maps.target_tid = rec->opts.maps.target_pid;
>
> - if (perf_evlist__create_maps(evsel_list, rec->opts.target_pid,
> - rec->opts.target_tid, rec->opts.uid,
> - rec->opts.cpu_list) < 0)
> + if (perf_evlist__create_maps(evsel_list, rec->opts.maps.target_pid,
> + rec->opts.maps.target_tid, rec->opts.maps.uid,
> + rec->opts.maps.cpu_list) < 0)
> usage_with_options(record_usage, record_options);
>
> list_for_each_entry(pos, &evsel_list->entries, node) {
> diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
> index 70c4eb2bdf72..da3c1c3f8524 100644
> --- a/tools/perf/builtin-test.c
> +++ b/tools/perf/builtin-test.c
> @@ -1010,8 +1010,10 @@ realloc:
> static int test__PERF_RECORD(void)
> {
> struct perf_record_opts opts = {
> - .target_pid = -1,
> - .target_tid = -1,
> + .maps = {
> + .target_pid = -1,
> + .target_tid = -1,
> + },
> .no_delay = true,
> .freq = 10,
> .mmap_pages = 256,
> @@ -1055,8 +1057,9 @@ static int test__PERF_RECORD(void)
> * perf_evlist__prepare_workload we'll fill in the only thread
> * we're monitoring, the one forked there.
> */
> - err = perf_evlist__create_maps(evlist, opts.target_pid,
> - opts.target_tid, UINT_MAX, opts.cpu_list);
> + err = perf_evlist__create_maps(evlist, opts.maps.target_pid,
> + opts.maps.target_tid, UINT_MAX,
> + opts.maps.cpu_list);
> if (err < 0) {
> pr_debug("Not enough memory to create thread/cpu maps\n");
> goto out_delete_evlist;
> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> index 92af1688bae4..972cd99fb509 100644
> --- a/tools/perf/perf.h
> +++ b/tools/perf/perf.h
> @@ -185,10 +185,17 @@ extern const char perf_version_string[];
>
> void pthread__unblock_sigwinch(void);
>
> -struct perf_record_opts {
> +struct perf_maps_opts {
> pid_t target_pid;
> pid_t target_tid;
> uid_t uid;
> + bool system_wide;
> + const char *cpu_list;
> + const char *uid_str;
> +};
> +
> +struct perf_record_opts {
> + struct perf_maps_opts maps;
> bool call_graph;
> bool group;
> bool inherit_stat;
> @@ -200,14 +207,12 @@ struct perf_record_opts {
> bool sample_address;
> bool sample_time;
> bool sample_id_all_avail;
> - bool system_wide;
> bool period;
> unsigned int freq;
> unsigned int mmap_pages;
> unsigned int user_freq;
> u64 default_interval;
> u64 user_interval;
> - const char *cpu_list;
> };
>
> #endif
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index a57a8cfc5d90..d7c3a2d5771c 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -820,7 +820,8 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
> exit(-1);
> }
>
> - if (!opts->system_wide && opts->target_tid == -1 && opts->target_pid == -1)
> + if (!opts->maps.system_wide && opts->maps.target_tid == -1 &&
> + opts->maps.target_pid == -1)
> evlist->threads->map[0] = evlist->workload.pid;
>
> close(child_ready_pipe[1]);
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index 9a11f9edac12..6a4e97d5f6d5 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -105,15 +105,15 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts)
> if (opts->call_graph)
> attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
>
> - if (opts->system_wide)
> + if (opts->maps.system_wide)
> attr->sample_type |= PERF_SAMPLE_CPU;
>
> if (opts->period)
> attr->sample_type |= PERF_SAMPLE_PERIOD;
>
> if (opts->sample_id_all_avail &&
> - (opts->sample_time || opts->system_wide ||
> - !opts->no_inherit || opts->cpu_list))
> + (opts->sample_time || opts->maps.system_wide ||
> + !opts->no_inherit || opts->maps.cpu_list))
> attr->sample_type |= PERF_SAMPLE_TIME;
>
> if (opts->raw_samples) {
> @@ -130,7 +130,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts)
> attr->mmap = track;
> attr->comm = track;
>
> - if (opts->target_pid == -1 && opts->target_tid == -1 && !opts->system_wide) {
> + if (opts->maps.target_pid == -1 && opts->maps.target_tid == -1 &&
> + !opts->maps.system_wide) {
> attr->disabled = 1;
> attr->enable_on_exec = 1;
> }
> --
> 1.7.9
--
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