Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932454AbbGUMd4 (ORCPT ); Tue, 21 Jul 2015 08:33:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53844 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932358AbbGUMde (ORCPT ); Tue, 21 Jul 2015 08:33:34 -0400 From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , David Ahern , Ingo Molnar , Namhyung Kim , Peter Zijlstra Subject: [PATCH 46/47] perf script: Add python support for stat events Date: Tue, 21 Jul 2015 14:32:06 +0200 Message-Id: <1437481927-29538-47-git-send-email-jolsa@kernel.org> In-Reply-To: <1437481927-29538-1-git-send-email-jolsa@kernel.org> References: <1437481927-29538-1-git-send-email-jolsa@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4332 Lines: 152 Add support to get stat events data in perf python scripts. Link: http://lkml.kernel.org/n/tip-jojiaelyckrw6040wqc06q1j@git.kernel.org Signed-off-by: Jiri Olsa --- .../util/scripting-engines/trace-event-python.c | 113 +++++++++++++++++++-- 1 file changed, 107 insertions(+), 6 deletions(-) diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index ace2484985cb..2e771ede9428 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -41,6 +41,8 @@ #include "../thread-stack.h" #include "../trace-event.h" #include "../machine.h" +#include "thread_map.h" +#include "cpumap.h" PyMODINIT_FUNC initperf_trace_context(void); @@ -858,6 +860,103 @@ static void python_process_event(union perf_event *event, } } +static void get_handler_name(char *str, size_t size, + struct perf_evsel *evsel) +{ + char *p = str; + + scnprintf(str, size, "stat__%s", perf_evsel__name(evsel)); + + while ((p = strchr(p, ':'))) { + *p = '_'; + p++; + } +} + +static void +process_stat(struct perf_evsel *counter, int cpu, int thread, u64 time, + struct perf_counts_values *count) +{ + PyObject *handler, *t; + static char handler_name[256]; + int n = 0; + + t = PyTuple_New(MAX_FIELDS); + if (!t) + Py_FatalError("couldn't create Python tuple"); + + get_handler_name(handler_name, sizeof(handler_name), + counter); + + handler = get_handler(handler_name); + if (!handler) { + pr_debug("can't find python handler %s\n", handler_name); + return; + } + + PyTuple_SetItem(t, n++, PyInt_FromLong(cpu)); + PyTuple_SetItem(t, n++, PyInt_FromLong(thread)); + PyTuple_SetItem(t, n++, PyLong_FromLong(time)); + PyTuple_SetItem(t, n++, PyLong_FromLong(count->val)); + PyTuple_SetItem(t, n++, PyLong_FromLong(count->ena)); + PyTuple_SetItem(t, n++, PyLong_FromLong(count->run)); + + if (_PyTuple_Resize(&t, n) == -1) + Py_FatalError("error resizing Python tuple"); + + call_object(handler, t, handler_name); + + Py_DECREF(t); +} + +static void python_process_stat(struct perf_stat_config *config, + struct perf_evsel *counter, u64 time) +{ + struct thread_map *threads = counter->threads; + struct cpu_map *cpus = counter->cpus; + int cpu, thread; + + if (config->aggr_mode == AGGR_GLOBAL) { + process_stat(counter, -1, -1, time, + &counter->counts->aggr); + return; + } + + for (thread = 0; thread < threads->nr; thread++) { + for (cpu = 0; cpu < cpus->nr; cpu++) { + process_stat(counter, cpus->map[cpu], + thread_map__pid(threads, thread), time, + perf_counts(counter->counts, cpu, thread)); + } + } +} + +static void python_process_stat_interval(u64 time) +{ + PyObject *handler, *t; + static const char handler_name[] = "stat__interval"; + int n = 0; + + t = PyTuple_New(MAX_FIELDS); + if (!t) + Py_FatalError("couldn't create Python tuple"); + + handler = get_handler(handler_name); + if (!handler) { + pr_debug("can't find python handler %s\n", handler_name); + return; + } + + PyTuple_SetItem(t, n++, PyLong_FromLong(time)); + + if (_PyTuple_Resize(&t, n) == -1) + Py_FatalError("error resizing Python tuple"); + + call_object(handler, t, handler_name); + + Py_DECREF(t); +} + static int run_start_sub(void) { main_module = PyImport_AddModule("__main__"); @@ -1200,10 +1299,12 @@ static int python_generate_script(struct pevent *pevent, const char *outfile) } struct scripting_ops python_scripting_ops = { - .name = "Python", - .start_script = python_start_script, - .flush_script = python_flush_script, - .stop_script = python_stop_script, - .process_event = python_process_event, - .generate_script = python_generate_script, + .name = "Python", + .start_script = python_start_script, + .flush_script = python_flush_script, + .stop_script = python_stop_script, + .process_event = python_process_event, + .process_stat = python_process_stat, + .process_stat_interval = python_process_stat_interval, + .generate_script = python_generate_script, }; -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/