[PATCH 19/25] perf script: Process cpu/threads maps

Jiri Olsa
2015-11-05T14:42:00Z

Adding processing of cpu/threads maps. Configuring session's
evlist with these maps.

Tested-by: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/n/tip-s3txa1u2qv3bi8uspp4hi7al@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/builtin-script.c | 67 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 72b5deb4bd79..cc3d8e141df6 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -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;
@@ -739,6 +743,9 @@ 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 int process_attr(struct perf_tool *tool, union perf_event *event,
@@ -1695,6 +1702,63 @@ 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;
@@ -1723,6 +1787,8 @@ 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,
},
@@ -2076,6 +2142,7 @@ 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)
--
2.4.3