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Date: Sat, 9 Jul 2022 09:50:25 +0800 From: Yang Jihong <yangjihong1@...wei.com> To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>, <mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>, <jolsa@...nel.org>, <namhyung@...nel.org>, <pc@...ibm.com>, <linux-kernel@...r.kernel.org>, <linux-perf-users@...r.kernel.org> CC: <yangjihong1@...wei.com> Subject: [RFC v3 09/17] perf kwork: Add workqueue report support Implements workqueue report function. Test cases: # perf kwork -k workqueue rep Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)gc_worker | 0001 | 1912.389 ms | 173 | 12.896 ms | 44002.050787 s | 44002.063683 s | (w)mix_interrupt_randomness | 0000 | 24.308 ms | 285 | 3.349 ms | 44004.784908 s | 44004.788257 s | (w)e1000_watchdog | 0002 | 5.332 ms | 5 | 2.059 ms | 44000.914366 s | 44000.916424 s | (w)vmstat_update | 0005 | 0.989 ms | 2 | 0.953 ms | 43997.986991 s | 43997.987944 s | (w)vmstat_shepherd | 0000 | 0.964 ms | 8 | 0.195 ms | 43997.986453 s | 43997.986648 s | (w)vmstat_update | 0003 | 0.306 ms | 6 | 0.077 ms | 44004.689543 s | 44004.689620 s | (w)vmstat_update | 0000 | 0.196 ms | 5 | 0.049 ms | 44005.713732 s | 44005.713781 s | (w)vmstat_update | 0001 | 0.162 ms | 2 | 0.130 ms | 44000.192034 s | 44000.192164 s | (w)mix_interrupt_randomness | 0002 | 0.114 ms | 5 | 0.037 ms | 44005.012625 s | 44005.012662 s | (w)vmstat_update | 0002 | 0.084 ms | 2 | 0.043 ms | 44004.817702 s | 44004.817745 s | (w)vmstat_update | 0006 | 0.067 ms | 2 | 0.041 ms | 43997.987214 s | 43997.987254 s | (w)neigh_periodic_work | 0004 | 0.039 ms | 1 | 0.039 ms | 43999.929935 s | 43999.929974 s | (w)vmstat_update | 0007 | 0.037 ms | 1 | 0.037 ms | 43997.988969 s | 43997.989006 s | (w)neigh_managed_work | 0001 | 0.036 ms | 1 | 0.036 ms | 43997.665813 s | 43997.665849 s | (w)neigh_managed_work | 0004 | 0.036 ms | 1 | 0.036 ms | 44002.953507 s | 44002.953543 s | (w)vmstat_update | 0004 | 0.027 ms | 1 | 0.027 ms | 43997.913973 s | 43997.914000 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k workqueue rep -S Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)gc_worker | 0001 | 1912.389 ms | 173 | 12.896 ms | 44002.050787 s | 44002.063683 s | (w)mix_interrupt_randomness | 0000 | 24.308 ms | 285 | 3.349 ms | 44004.784908 s | 44004.788257 s | (w)e1000_watchdog | 0002 | 5.332 ms | 5 | 2.059 ms | 44000.914366 s | 44000.916424 s | (w)vmstat_update | 0005 | 0.989 ms | 2 | 0.953 ms | 43997.986991 s | 43997.987944 s | (w)vmstat_shepherd | 0000 | 0.964 ms | 8 | 0.195 ms | 43997.986453 s | 43997.986648 s | (w)vmstat_update | 0003 | 0.306 ms | 6 | 0.077 ms | 44004.689543 s | 44004.689620 s | (w)vmstat_update | 0000 | 0.196 ms | 5 | 0.049 ms | 44005.713732 s | 44005.713781 s | (w)vmstat_update | 0001 | 0.162 ms | 2 | 0.130 ms | 44000.192034 s | 44000.192164 s | (w)mix_interrupt_randomness | 0002 | 0.114 ms | 5 | 0.037 ms | 44005.012625 s | 44005.012662 s | (w)vmstat_update | 0002 | 0.084 ms | 2 | 0.043 ms | 44004.817702 s | 44004.817745 s | (w)vmstat_update | 0006 | 0.067 ms | 2 | 0.041 ms | 43997.987214 s | 43997.987254 s | (w)neigh_periodic_work | 0004 | 0.039 ms | 1 | 0.039 ms | 43999.929935 s | 43999.929974 s | (w)vmstat_update | 0007 | 0.037 ms | 1 | 0.037 ms | 43997.988969 s | 43997.989006 s | (w)neigh_managed_work | 0001 | 0.036 ms | 1 | 0.036 ms | 43997.665813 s | 43997.665849 s | (w)neigh_managed_work | 0004 | 0.036 ms | 1 | 0.036 ms | 44002.953507 s | 44002.953543 s | (w)vmstat_update | 0004 | 0.027 ms | 1 | 0.027 ms | 43997.913973 s | 43997.914000 s | -------------------------------------------------------------------------------------------------------------------------------- Total count : 500 Total runtime (msec) : 1945.085 (0.192% load average) Total time span (msec) : 10155.026 -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k workqueue rep -n vmstat_update Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)vmstat_update | 0005 | 0.989 ms | 2 | 0.953 ms | 43997.986991 s | 43997.987944 s | (w)vmstat_update | 0003 | 0.306 ms | 6 | 0.077 ms | 44004.689543 s | 44004.689620 s | (w)vmstat_update | 0000 | 0.196 ms | 5 | 0.049 ms | 44005.713732 s | 44005.713781 s | (w)vmstat_update | 0001 | 0.162 ms | 2 | 0.130 ms | 44000.192034 s | 44000.192164 s | (w)vmstat_update | 0002 | 0.084 ms | 2 | 0.043 ms | 44004.817702 s | 44004.817745 s | (w)vmstat_update | 0006 | 0.067 ms | 2 | 0.041 ms | 43997.987214 s | 43997.987254 s | (w)vmstat_update | 0007 | 0.037 ms | 1 | 0.037 ms | 43997.988969 s | 43997.989006 s | (w)vmstat_update | 0004 | 0.027 ms | 1 | 0.027 ms | 43997.913973 s | 43997.914000 s | -------------------------------------------------------------------------------------------------------------------------------- Signed-off-by: Yang Jihong <yangjihong1@...wei.com> --- tools/perf/builtin-kwork.c | 74 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 72 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c index 8680fe3795d4..f7736b6f0815 100644 --- a/tools/perf/builtin-kwork.c +++ b/tools/perf/builtin-kwork.c @@ -657,17 +657,87 @@ static struct kwork_class kwork_softirq = { .work_name = softirq_work_name, }; +static struct kwork_class kwork_workqueue; +static int process_workqueue_execute_start_event(struct perf_tool *tool, + struct evsel *evsel, + struct perf_sample *sample, + struct machine *machine) +{ + struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); + + if (kwork->tp_handler->entry_event) + return kwork->tp_handler->entry_event(kwork, &kwork_workqueue, + evsel, sample, machine); + + return 0; +} + +static int process_workqueue_execute_end_event(struct perf_tool *tool, + struct evsel *evsel, + struct perf_sample *sample, + struct machine *machine) +{ + struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); + + if (kwork->tp_handler->exit_event) + return kwork->tp_handler->exit_event(kwork, &kwork_workqueue, + evsel, sample, machine); + + return 0; +} + const struct evsel_str_handler workqueue_tp_handlers[] = { { "workqueue:workqueue_activate_work", NULL, }, - { "workqueue:workqueue_execute_start", NULL, }, - { "workqueue:workqueue_execute_end", NULL, }, + { "workqueue:workqueue_execute_start", process_workqueue_execute_start_event, }, + { "workqueue:workqueue_execute_end", process_workqueue_execute_end_event, }, }; +static int workqueue_class_init(struct kwork_class *class, + struct perf_session *session) +{ + if (perf_session__set_tracepoints_handlers(session, + workqueue_tp_handlers)) { + pr_err("Failed to set workqueue tracepoints handlers\n"); + return -1; + } + + class->work_root = RB_ROOT_CACHED; + return 0; +} + +static void workqueue_work_init(struct kwork_class *class, + struct kwork_work *work, + struct evsel *evsel, + struct perf_sample *sample, + struct machine *machine) +{ + char *modp = NULL; + unsigned long long function_addr = evsel__intval(evsel, + sample, "function"); + + work->class = class; + work->cpu = sample->cpu; + work->id = evsel__intval(evsel, sample, "work"); + work->name = function_addr == 0 ? NULL : + machine__resolve_kernel_addr(machine, &function_addr, &modp); +} + +static void workqueue_work_name(struct kwork_work *work, char *buf, int len) +{ + if (work->name != NULL) + snprintf(buf, len, "(w)%s", work->name); + else + snprintf(buf, len, "(w)0x%" PRIx64, work->id); +} + static struct kwork_class kwork_workqueue = { .name = "workqueue", .type = KWORK_CLASS_WORKQUEUE, .nr_tracepoints = 3, .tp_handlers = workqueue_tp_handlers, + .class_init = workqueue_class_init, + .work_init = workqueue_work_init, + .work_name = workqueue_work_name, }; static struct kwork_class *kwork_class_supported_list[KWORK_CLASS_MAX] = { -- 2.30.GIT
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