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Groups > linux.kernel > #1594633
| From | Hari Bathini <hbathini@linux.vnet.ibm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v8 5/6] perf script: Add script print support for namespace events |
| Date | 2017-03-07 21:50 +0100 |
| Message-ID | <tiuds-4ru-21@gated-at.bofh.it> (permalink) |
| References | <tiuds-4ru-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Introduce a new option to display events of type PERF_RECORD_NAMESPACES
and update perf-script documentation accordingly. Shown below is output
(trimmed) of perf script command with the newly introduced option, on
perf.data generated with perf record command using --namespaces option.
$ perf script --show-namespace-events
swapper 0 [000] 0.000000: PERF_RECORD_NAMESPACES 1/1 - nr_namespaces: 7
[0/net: 3/0xf000001c, 1/uts: 3/0xeffffffe, 2/ipc: 3/0xefffffff, 3/pid: 3/0xeffffffc,
4/user: 3/0xeffffffd, 5/mnt: 3/0xf0000000, 6/cgroup: 3/0xeffffffb]
swapper 0 [000] 0.000000: PERF_RECORD_NAMESPACES 2/2 - nr_namespaces: 7
[0/net: 3/0xf000001c, 1/uts: 3/0xeffffffe, 2/ipc: 3/0xefffffff, 3/pid: 3/0xeffffffc,
4/user: 3/0xeffffffd, 5/mnt: 3/0xf0000000, 6/cgroup: 3/0xeffffffb]
Acked-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
---
tools/perf/Documentation/perf-script.txt | 3 ++
tools/perf/builtin-script.c | 40 ++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 4ed5f23..62c9b0c 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -248,6 +248,9 @@ OPTIONS
--show-mmap-events
Display mmap related events (e.g. MMAP, MMAP2).
+--show-namespace-events
+ Display namespace events i.e. events of type PERF_RECORD_NAMESPACES.
+
--show-switch-events
Display context switch events i.e. events of type PERF_RECORD_SWITCH or
PERF_RECORD_SWITCH_CPU_WIDE.
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index f1ce806..66d62c9 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -830,6 +830,7 @@ struct perf_script {
bool show_task_events;
bool show_mmap_events;
bool show_switch_events;
+ bool show_namespace_events;
bool allocated;
struct cpu_map *cpus;
struct thread_map *threads;
@@ -1118,6 +1119,41 @@ static int process_comm_event(struct perf_tool *tool,
return ret;
}
+static int process_namespaces_event(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct machine *machine)
+{
+ struct thread *thread;
+ struct perf_script *script = container_of(tool, struct perf_script, tool);
+ struct perf_session *session = script->session;
+ struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
+ int ret = -1;
+
+ thread = machine__findnew_thread(machine, event->namespaces.pid,
+ event->namespaces.tid);
+ if (thread == NULL) {
+ pr_debug("problem processing NAMESPACES event, skipping it.\n");
+ return -1;
+ }
+
+ if (perf_event__process_namespaces(tool, event, sample, machine) < 0)
+ goto out;
+
+ if (!evsel->attr.sample_id_all) {
+ sample->cpu = 0;
+ sample->time = 0;
+ sample->tid = event->namespaces.tid;
+ sample->pid = event->namespaces.pid;
+ }
+ print_sample_start(sample, thread, evsel);
+ perf_event__fprintf(event, stdout);
+ ret = 0;
+out:
+ thread__put(thread);
+ return ret;
+}
+
static int process_fork_event(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
@@ -1293,6 +1329,8 @@ static int __cmd_script(struct perf_script *script)
}
if (script->show_switch_events)
script->tool.context_switch = process_switch_event;
+ if (script->show_namespace_events)
+ script->tool.namespaces = process_namespaces_event;
ret = perf_session__process_events(script->session);
@@ -2181,6 +2219,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
"Show the mmap events"),
OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
"Show context switch events (if recorded)"),
+ OPT_BOOLEAN('\0', "show-namespace-events", &script.show_namespace_events,
+ "Show namespace events (if recorded)"),
OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
OPT_BOOLEAN(0, "ns", &nanosecs,
"Use 9 decimal places when displaying time"),
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[PATCH v8 0/6] perf: Add support for analyzing events for containers Hari Bathini <hbathini@linux.vnet.ibm.com> - 2017-03-07 21:50 +0100
[PATCH v8 5/6] perf script: Add script print support for namespace events Hari Bathini <hbathini@linux.vnet.ibm.com> - 2017-03-07 21:50 +0100
[PATCH v8 3/6] perf record: Synthesize namespace events for current processes Hari Bathini <hbathini@linux.vnet.ibm.com> - 2017-03-07 21:50 +0100
[PATCH v8 6/6] perf tools: Add cgroup identifier sort order keyword Hari Bathini <hbathini@linux.vnet.ibm.com> - 2017-03-07 23:50 +0100
[PATCH v8 1/6] perf: Add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2017-03-08 02:30 +0100
Re: [PATCH v8 1/6] perf: Add PERF_RECORD_NAMESPACES to include namespaces related info Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-13 21:00 +0100
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