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perf script: Process cpu/threads maps
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Adding processing of cpu/threads maps. Configuring session's evlist with
these maps.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1452028152-26762-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Jiri Olsa authored and Arnaldo Carvalho de Melo committed Jan 6, 2016
1 parent 6db1a5c commit cfc8874
Showing 1 changed file with 67 additions and 0 deletions.
67 changes: 67 additions & 0 deletions tools/perf/builtin-script.c
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,11 @@
#include "util/sort.h"
#include "util/data.h"
#include "util/auxtrace.h"
#include "util/cpumap.h"
#include "util/thread_map.h"
#include "util/stat.h"
#include <linux/bitmap.h>
#include "asm/bug.h"

static char const *script_name;
static char const *generate_script_lang;
Expand Down Expand Up @@ -606,6 +610,9 @@ struct perf_script {
bool show_task_events;
bool show_mmap_events;
bool show_switch_events;
bool allocated;
struct cpu_map *cpus;
struct thread_map *threads;
};

static void process_event(struct perf_script *script __maybe_unused, union perf_event *event,
Expand Down Expand Up @@ -1682,6 +1689,63 @@ static void script__setup_sample_type(struct perf_script *script)
}
}

static int set_maps(struct perf_script *script)
{
struct perf_evlist *evlist = script->session->evlist;

if (!script->cpus || !script->threads)
return 0;

if (WARN_ONCE(script->allocated, "stats double allocation\n"))
return -EINVAL;

perf_evlist__set_maps(evlist, script->cpus, script->threads);

if (perf_evlist__alloc_stats(evlist, true))
return -ENOMEM;

script->allocated = true;
return 0;
}

static
int process_thread_map_event(struct perf_tool *tool,
union perf_event *event,
struct perf_session *session __maybe_unused)
{
struct perf_script *script = container_of(tool, struct perf_script, tool);

if (script->threads) {
pr_warning("Extra thread map event, ignoring.\n");
return 0;
}

script->threads = thread_map__new_event(&event->thread_map);
if (!script->threads)
return -ENOMEM;

return set_maps(script);
}

static
int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_session *session __maybe_unused)
{
struct perf_script *script = container_of(tool, struct perf_script, tool);

if (script->cpus) {
pr_warning("Extra cpu map event, ignoring.\n");
return 0;
}

script->cpus = cpu_map__new_data(&event->cpu_map.data);
if (!script->cpus)
return -ENOMEM;

return set_maps(script);
}

int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
{
bool show_full_info = false;
Expand Down Expand Up @@ -1710,6 +1774,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
.auxtrace_info = perf_event__process_auxtrace_info,
.auxtrace = perf_event__process_auxtrace,
.auxtrace_error = perf_event__process_auxtrace_error,
.thread_map = process_thread_map_event,
.cpu_map = process_cpu_map_event,
.ordered_events = true,
.ordering_requires_timestamps = true,
},
Expand Down Expand Up @@ -2063,6 +2129,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
flush_scripting();

out_delete:
perf_evlist__free_stats(session->evlist);
perf_session__delete(session);

if (script_started)
Expand Down

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