perf evsel: Introduce config attr method

Out of the code in 'perf record', so that we can share option parsing,
etc. Eventually will be used by 'perf top', but first 'trace' will use
it.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-hzjqsgnte1esk90ytq0ap98v@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 6ab58cc99d53effeced21668df5605e634913e6b..c3ac5415c097ca3009af0393ea355dc7f36aa6d9 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -35,32 +35,24 @@ enum write_mode_t {
        WRITE_APPEND
 };
 
-static u64                     user_interval                   = ULLONG_MAX;
-static u64                     default_interval                =      0;
+static struct perf_record_opts record_opts = {
+       .target_pid          = -1,
+       .target_tid          = -1,
+       .user_freq           = UINT_MAX,
+       .user_interval       = ULLONG_MAX,
+       .freq                = 1000,
+       .sample_id_all_avail = true,
+};
 
 static unsigned int            page_size;
 static unsigned int            mmap_pages                      = UINT_MAX;
-static unsigned int            user_freq                       = UINT_MAX;
-static int                     freq                            =   1000;
 static int                     output;
 static int                     pipe_output                     =      0;
 static const char              *output_name                    = NULL;
 static bool                    group                           =  false;
 static int                     realtime_prio                   =      0;
-static bool                    nodelay                         =  false;
-static bool                    raw_samples                     =  false;
-static bool                    sample_id_all_avail             =   true;
-static bool                    system_wide                     =  false;
-static pid_t                   target_pid                      =     -1;
-static pid_t                   target_tid                      =     -1;
 static pid_t                   child_pid                       =     -1;
-static bool                    no_inherit                      =  false;
 static enum write_mode_t       write_mode                      = WRITE_FORCE;
-static bool                    call_graph                      =  false;
-static bool                    inherit_stat                    =  false;
-static bool                    no_samples                      =  false;
-static bool                    sample_address                  =  false;
-static bool                    sample_time                     =  false;
 static bool                    no_buildid                      =  false;
 static bool                    no_buildid_cache                =  false;
 static struct perf_evlist      *evsel_list;
@@ -72,7 +64,6 @@ static int                    file_new                        =      1;
 static off_t                   post_processing_offset;
 
 static struct perf_session     *session;
-static const char              *cpu_list;
 static const char               *progname;
 
 static void advance_output(size_t size)
@@ -169,78 +160,6 @@ static void sig_atexit(void)
        kill(getpid(), signr);
 }
 
-static void config_attr(struct perf_evsel *evsel, struct perf_evlist *evlist)
-{
-       struct perf_event_attr *attr = &evsel->attr;
-       int track = !evsel->idx; /* only the first counter needs these */
-
-       attr->disabled          = 1;
-       attr->inherit           = !no_inherit;
-       attr->read_format       = PERF_FORMAT_TOTAL_TIME_ENABLED |
-                                 PERF_FORMAT_TOTAL_TIME_RUNNING |
-                                 PERF_FORMAT_ID;
-
-       attr->sample_type       |= PERF_SAMPLE_IP | PERF_SAMPLE_TID;
-
-       if (evlist->nr_entries > 1)
-               attr->sample_type |= PERF_SAMPLE_ID;
-
-       /*
-        * We default some events to a 1 default interval. But keep
-        * it a weak assumption overridable by the user.
-        */
-       if (!attr->sample_period || (user_freq != UINT_MAX &&
-                                    user_interval != ULLONG_MAX)) {
-               if (freq) {
-                       attr->sample_type       |= PERF_SAMPLE_PERIOD;
-                       attr->freq              = 1;
-                       attr->sample_freq       = freq;
-               } else {
-                       attr->sample_period = default_interval;
-               }
-       }
-
-       if (no_samples)
-               attr->sample_freq = 0;
-
-       if (inherit_stat)
-               attr->inherit_stat = 1;
-
-       if (sample_address) {
-               attr->sample_type       |= PERF_SAMPLE_ADDR;
-               attr->mmap_data = track;
-       }
-
-       if (call_graph)
-               attr->sample_type       |= PERF_SAMPLE_CALLCHAIN;
-
-       if (system_wide)
-               attr->sample_type       |= PERF_SAMPLE_CPU;
-
-       if (sample_id_all_avail &&
-           (sample_time || system_wide || !no_inherit || cpu_list))
-               attr->sample_type       |= PERF_SAMPLE_TIME;
-
-       if (raw_samples) {
-               attr->sample_type       |= PERF_SAMPLE_TIME;
-               attr->sample_type       |= PERF_SAMPLE_RAW;
-               attr->sample_type       |= PERF_SAMPLE_CPU;
-       }
-
-       if (nodelay) {
-               attr->watermark = 0;
-               attr->wakeup_events = 1;
-       }
-
-       attr->mmap              = track;
-       attr->comm              = track;
-
-       if (target_pid == -1 && target_tid == -1 && !system_wide) {
-               attr->disabled = 1;
-               attr->enable_on_exec = 1;
-       }
-}
-
 static bool perf_evlist__equal(struct perf_evlist *evlist,
                               struct perf_evlist *other)
 {
@@ -264,11 +183,10 @@ static void open_counters(struct perf_evlist *evlist)
 {
        struct perf_evsel *pos, *first;
 
-       if (evlist->cpus->map[0] < 0)
-               no_inherit = true;
-
        first = list_entry(evlist->entries.next, struct perf_evsel, node);
 
+       perf_evlist__config_attrs(evlist, &record_opts);
+
        list_for_each_entry(pos, &evlist->entries, node) {
                struct perf_event_attr *attr = &pos->attr;
                struct xyarray *group_fd = NULL;
@@ -288,10 +206,8 @@ static void open_counters(struct perf_evlist *evlist)
 
                if (group && pos != first)
                        group_fd = first->fd;
-
-               config_attr(pos, evlist);
 retry_sample_id:
-               attr->sample_id_all = sample_id_all_avail ? 1 : 0;
+               attr->sample_id_all = record_opts.sample_id_all_avail ? 1 : 0;
 try_again:
                if (perf_evsel__open(pos, evlist->cpus, evlist->threads, group,
                                     group_fd) < 0) {
@@ -300,15 +216,15 @@ try_again:
                        if (err == EPERM || err == EACCES) {
                                ui__error_paranoid();
                                exit(EXIT_FAILURE);
-                       } else if (err ==  ENODEV && cpu_list) {
+                       } else if (err ==  ENODEV && record_opts.cpu_list) {
                                die("No such device - did you specify"
                                        " an out-of-range profile CPU?\n");
-                       } else if (err == EINVAL && sample_id_all_avail) {
+                       } else if (err == EINVAL && record_opts.sample_id_all_avail) {
                                /*
                                 * Old kernel, no attr->sample_id_type_all field
                                 */
-                               sample_id_all_avail = false;
-                               if (!sample_time && !raw_samples && !time_needed)
+                               record_opts.sample_id_all_avail = false;
+                               if (!record_opts.sample_time && !record_opts.raw_samples && !time_needed)
                                        attr->sample_type &= ~PERF_SAMPLE_TIME;
 
                                goto retry_sample_id;
@@ -482,13 +398,13 @@ static int __cmd_record(int argc, const char **argv)
 
        if (!output_name) {
                if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode))
-                       pipe_output = 1;
+                       pipe_output = true;
                else
                        output_name = "perf.data";
        }
        if (output_name) {
                if (!strcmp(output_name, "-"))
-                       pipe_output = 1;
+                       pipe_output = true;
                else if (!stat(output_name, &st) && st.st_size) {
                        if (write_mode == WRITE_FORCE) {
                                char oldname[PATH_MAX];
@@ -592,7 +508,7 @@ static int __cmd_record(int argc, const char **argv)
                        exit(-1);
                }
 
-               if (!system_wide && target_tid == -1 && target_pid == -1)
+               if (!record_opts.system_wide && record_opts.target_tid == -1 && record_opts.target_pid == -1)
                        evsel_list->threads->map[0] = child_pid;
 
                close(child_ready_pipe[1]);
@@ -689,7 +605,7 @@ static int __cmd_record(int argc, const char **argv)
                perf_session__process_machines(session,
                                               perf_event__synthesize_guest_os);
 
-       if (!system_wide)
+       if (!record_opts.system_wide)
                perf_event__synthesize_thread_map(evsel_list->threads,
                                                  process_synthesized_event,
                                                  session);
@@ -766,44 +682,44 @@ const struct option record_options[] = {
                     parse_events_option),
        OPT_CALLBACK(0, "filter", &evsel_list, "filter",
                     "event filter", parse_filter),
-       OPT_INTEGER('p', "pid", &target_pid,
+       OPT_INTEGER('p', "pid", &record_opts.target_pid,
                    "record events on existing process id"),
-       OPT_INTEGER('t', "tid", &target_tid,
+       OPT_INTEGER('t', "tid", &record_opts.target_tid,
                    "record events on existing thread id"),
        OPT_INTEGER('r', "realtime", &realtime_prio,
                    "collect data with this RT SCHED_FIFO priority"),
-       OPT_BOOLEAN('D', "no-delay", &nodelay,
+       OPT_BOOLEAN('D', "no-delay", &record_opts.no_delay,
                    "collect data without buffering"),
-       OPT_BOOLEAN('R', "raw-samples", &raw_samples,
+       OPT_BOOLEAN('R', "raw-samples", &record_opts.raw_samples,
                    "collect raw sample records from all opened counters"),
-       OPT_BOOLEAN('a', "all-cpus", &system_wide,
+       OPT_BOOLEAN('a', "all-cpus", &record_opts.system_wide,
                            "system-wide collection from all CPUs"),
        OPT_BOOLEAN('A', "append", &append_file,
                            "append to the output file to do incremental profiling"),
-       OPT_STRING('C', "cpu", &cpu_list, "cpu",
+       OPT_STRING('C', "cpu", &record_opts.cpu_list, "cpu",
                    "list of cpus to monitor"),
        OPT_BOOLEAN('f', "force", &force,
                        "overwrite existing data file (deprecated)"),
-       OPT_U64('c', "count", &user_interval, "event period to sample"),
+       OPT_U64('c', "count", &record_opts.user_interval, "event period to sample"),
        OPT_STRING('o', "output", &output_name, "file",
                    "output file name"),
-       OPT_BOOLEAN('i', "no-inherit", &no_inherit,
+       OPT_BOOLEAN('i', "no-inherit", &record_opts.no_inherit,
                    "child tasks do not inherit counters"),
-       OPT_UINTEGER('F', "freq", &user_freq, "profile at this frequency"),
+       OPT_UINTEGER('F', "freq", &record_opts.user_freq, "profile at this frequency"),
        OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
        OPT_BOOLEAN(0, "group", &group,
                    "put the counters into a counter group"),
-       OPT_BOOLEAN('g', "call-graph", &call_graph,
+       OPT_BOOLEAN('g', "call-graph", &record_opts.call_graph,
                    "do call-graph (stack chain/backtrace) recording"),
        OPT_INCR('v', "verbose", &verbose,
                    "be more verbose (show counter open errors, etc)"),
        OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"),
-       OPT_BOOLEAN('s', "stat", &inherit_stat,
+       OPT_BOOLEAN('s', "stat", &record_opts.inherit_stat,
                    "per thread counts"),
-       OPT_BOOLEAN('d', "data", &sample_address,
+       OPT_BOOLEAN('d', "data", &record_opts.sample_address,
                    "Sample addresses"),
-       OPT_BOOLEAN('T', "timestamp", &sample_time, "Sample timestamps"),
-       OPT_BOOLEAN('n', "no-samples", &no_samples,
+       OPT_BOOLEAN('T', "timestamp", &record_opts.sample_time, "Sample timestamps"),
+       OPT_BOOLEAN('n', "no-samples", &record_opts.no_samples,
                    "don't sample"),
        OPT_BOOLEAN('N', "no-buildid-cache", &no_buildid_cache,
                    "do not update the buildid cache"),
@@ -828,8 +744,8 @@ 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 && target_pid == -1 && target_tid == -1 &&
-               !system_wide && !cpu_list)
+       if (!argc && record_opts.target_pid == -1 && record_opts.target_tid == -1 &&
+               !record_opts.system_wide && !record_opts.cpu_list)
                usage_with_options(record_usage, record_options);
 
        if (force && append_file) {
@@ -842,7 +758,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
                write_mode = WRITE_FORCE;
        }
 
-       if (nr_cgroups && !system_wide) {
+       if (nr_cgroups && !record_opts.system_wide) {
                fprintf(stderr, "cgroup monitoring only available in"
                        " system-wide mode\n");
                usage_with_options(record_usage, record_options);
@@ -869,11 +785,11 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
                goto out_symbol_exit;
        }
 
-       if (target_pid != -1)
-               target_tid = target_pid;
+       if (record_opts.target_pid != -1)
+               record_opts.target_tid = record_opts.target_pid;
 
-       if (perf_evlist__create_maps(evsel_list, target_pid,
-                                    target_tid, cpu_list) < 0)
+       if (perf_evlist__create_maps(evsel_list, record_opts.target_pid,
+                                    record_opts.target_tid, record_opts.cpu_list) < 0)
                usage_with_options(record_usage, record_options);
 
        list_for_each_entry(pos, &evsel_list->entries, node) {
@@ -887,18 +803,18 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
        if (perf_evlist__alloc_pollfd(evsel_list) < 0)
                goto out_free_fd;
 
-       if (user_interval != ULLONG_MAX)
-               default_interval = user_interval;
-       if (user_freq != UINT_MAX)
-               freq = user_freq;
+       if (record_opts.user_interval != ULLONG_MAX)
+               record_opts.default_interval = record_opts.user_interval;
+       if (record_opts.user_freq != UINT_MAX)
+               record_opts.freq = record_opts.user_freq;
 
        /*
         * User specified count overrides default frequency.
         */
-       if (default_interval)
-               freq = 0;
-       else if (freq) {
-               default_interval = freq;
+       if (record_opts.default_interval)
+               record_opts.freq = 0;
+       else if (record_opts.freq) {
+               record_opts.default_interval = record_opts.freq;
        } else {
                fprintf(stderr, "frequency and count are zero, aborting\n");
                err = -EINVAL;

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 914c895510f76d1b40c106b3b2744733fa8ba498..eb6a13881887818ba24731d85cc906aa42b6aecb 100644 (file)
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -185,4 +185,24 @@ extern const char perf_version_string[];
 
 void pthread__unblock_sigwinch(void);
 
+struct perf_record_opts {
+       pid_t        target_pid;
+       pid_t        target_tid;
+       bool         call_graph;
+       bool         inherit_stat;
+       bool         no_delay;
+       bool         no_inherit;
+       bool         no_samples;
+       bool         raw_samples;
+       bool         sample_address;
+       bool         sample_time;
+       bool         sample_id_all_avail;
+       bool         system_wide;
+       unsigned int freq;
+       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 3bc5a287a9f92a2cf8121c504b059282a19000cd..b774341e797fffbbf39f125ea94e1dee74aa2fe6 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -46,6 +46,22 @@ struct perf_evlist *perf_evlist__new(struct cpu_map *cpus,
        return evlist;
 }
 
+void perf_evlist__config_attrs(struct perf_evlist *evlist,
+                              struct perf_record_opts *opts)
+{
+       struct perf_evsel *evsel;
+
+       if (evlist->cpus->map[0] < 0)
+               opts->no_inherit = true;
+
+       list_for_each_entry(evsel, &evlist->entries, node) {
+               perf_evsel__config(evsel, opts);
+
+               if (evlist->nr_entries > 1)
+                       evsel->attr.sample_type |= PERF_SAMPLE_ID;
+       }
+}
+
 static void perf_evlist__purge(struct perf_evlist *evlist)
 {
        struct perf_evsel *pos, *n;

diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index ec71c82935bd9bbf9f7bad1bcae6eac49836692a..231c06f8286b4cc9b157311e9d2e7a52b4c635f1 100644 (file)
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -10,6 +10,7 @@
 struct pollfd;
 struct thread_map;
 struct cpu_map;
+struct perf_record_opts;
 
 #define PERF_EVLIST__HLIST_BITS 8
 #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
@@ -64,6 +65,9 @@ union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
 
 int perf_evlist__open(struct perf_evlist *evlist, bool group);
 
+void perf_evlist__config_attrs(struct perf_evlist *evlist,
+                              struct perf_record_opts *opts);
+
 int perf_evlist__alloc_mmap(struct perf_evlist *evlist);
 int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite);
 void perf_evlist__munmap(struct perf_evlist *evlist);

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index e42626422587851b9c1b6e755dfdb09858640124..b38eaa34b28e2fe8b9ffef125f6bab915b35ce3e 100644 (file)
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -53,6 +53,76 @@ struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)
        return evsel;
 }
 
+void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts)
+{
+       struct perf_event_attr *attr = &evsel->attr;
+       int track = !evsel->idx; /* only the first counter needs these */
+
+       attr->sample_id_all = opts->sample_id_all_avail ? 1 : 0;
+       attr->inherit       = !opts->no_inherit;
+       attr->read_format   = PERF_FORMAT_TOTAL_TIME_ENABLED |
+                             PERF_FORMAT_TOTAL_TIME_RUNNING |
+                             PERF_FORMAT_ID;
+
+       attr->sample_type  |= PERF_SAMPLE_IP | PERF_SAMPLE_TID;
+
+       /*
+        * We default some events to a 1 default interval. But keep
+        * it a weak assumption overridable by the user.
+        */
+       if (!attr->sample_period || (opts->user_freq != UINT_MAX &&
+                                    opts->user_interval != ULLONG_MAX)) {
+               if (opts->freq) {
+                       attr->sample_type       |= PERF_SAMPLE_PERIOD;
+                       attr->freq              = 1;
+                       attr->sample_freq       = opts->freq;
+               } else {
+                       attr->sample_period = opts->default_interval;
+               }
+       }
+
+       if (opts->no_samples)
+               attr->sample_freq = 0;
+
+       if (opts->inherit_stat)
+               attr->inherit_stat = 1;
+
+       if (opts->sample_address) {
+               attr->sample_type       |= PERF_SAMPLE_ADDR;
+               attr->mmap_data = track;
+       }
+
+       if (opts->call_graph)
+               attr->sample_type       |= PERF_SAMPLE_CALLCHAIN;
+
+       if (opts->system_wide)
+               attr->sample_type       |= PERF_SAMPLE_CPU;
+
+       if (opts->sample_id_all_avail &&
+           (opts->sample_time || opts->system_wide ||
+            !opts->no_inherit || opts->cpu_list))
+               attr->sample_type       |= PERF_SAMPLE_TIME;
+
+       if (opts->raw_samples) {
+               attr->sample_type       |= PERF_SAMPLE_TIME;
+               attr->sample_type       |= PERF_SAMPLE_RAW;
+               attr->sample_type       |= PERF_SAMPLE_CPU;
+       }
+
+       if (opts->no_delay) {
+               attr->watermark = 0;
+               attr->wakeup_events = 1;
+       }
+
+       attr->mmap = track;
+       attr->comm = track;
+
+       if (opts->target_pid == -1 && opts->target_tid == -1 && !opts->system_wide) {
+               attr->disabled = 1;
+               attr->enable_on_exec = 1;
+       }
+}
+
 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
 {
        int cpu, thread;

diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index b1d15e6f7ae32a4efc173ebd7779cd06bc02f41f..6421c07f50154ed7faa570536b92898bfb8e83ed 100644 (file)
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -67,6 +67,7 @@ struct perf_evsel {
 struct cpu_map;
 struct thread_map;
 struct perf_evlist;
+struct perf_record_opts;
 
 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx);
 void perf_evsel__init(struct perf_evsel *evsel,
@@ -74,6 +75,9 @@ void perf_evsel__init(struct perf_evsel *evsel,
 void perf_evsel__exit(struct perf_evsel *evsel);
 void perf_evsel__delete(struct perf_evsel *evsel);
 
+void perf_evsel__config(struct perf_evsel *evsel,
+                       struct perf_record_opts *opts);
+
 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
 int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);