diff options
| -rw-r--r-- | tools/perf/util/bpf_kwork.c | 18 | ||||
| -rw-r--r-- | tools/perf/util/bpf_skel/kwork_trace.bpf.c | 75 |
2 files changed, 92 insertions, 1 deletions
diff --git a/tools/perf/util/bpf_kwork.c b/tools/perf/util/bpf_kwork.c index a7af3ca5f503..730b2819c282 100644 --- a/tools/perf/util/bpf_kwork.c +++ b/tools/perf/util/bpf_kwork.c @@ -98,10 +98,26 @@ static struct kwork_class_bpf kwork_irq_bpf = { .get_work_name = get_work_name_from_map, }; +static void softirq_load_prepare(struct perf_kwork *kwork) +{ + if (kwork->report == KWORK_REPORT_RUNTIME) { + bpf_program__set_autoload(skel->progs.report_softirq_entry, true); + bpf_program__set_autoload(skel->progs.report_softirq_exit, true); + } else if (kwork->report == KWORK_REPORT_LATENCY) { + bpf_program__set_autoload(skel->progs.latency_softirq_raise, true); + bpf_program__set_autoload(skel->progs.latency_softirq_entry, true); + } +} + +static struct kwork_class_bpf kwork_softirq_bpf = { + .load_prepare = softirq_load_prepare, + .get_work_name = get_work_name_from_map, +}; + static struct kwork_class_bpf * kwork_class_bpf_supported_list[KWORK_CLASS_MAX] = { [KWORK_CLASS_IRQ] = &kwork_irq_bpf, - [KWORK_CLASS_SOFTIRQ] = NULL, + [KWORK_CLASS_SOFTIRQ] = &kwork_softirq_bpf, [KWORK_CLASS_WORKQUEUE] = NULL, }; diff --git a/tools/perf/util/bpf_skel/kwork_trace.bpf.c b/tools/perf/util/bpf_skel/kwork_trace.bpf.c index 1925407d1c16..7c834a7a6987 100644 --- a/tools/perf/util/bpf_skel/kwork_trace.bpf.c +++ b/tools/perf/util/bpf_skel/kwork_trace.bpf.c @@ -221,4 +221,79 @@ int report_irq_handler_exit(struct trace_event_raw_irq_handler_exit *ctx) return update_timeend(&perf_kwork_report, &perf_kwork_time, &key); } +static char softirq_name_list[NR_SOFTIRQS][MAX_KWORKNAME] = { + { "HI" }, + { "TIMER" }, + { "NET_TX" }, + { "NET_RX" }, + { "BLOCK" }, + { "IRQ_POLL" }, + { "TASKLET" }, + { "SCHED" }, + { "HRTIMER" }, + { "RCU" }, +}; + +SEC("tracepoint/irq/softirq_entry") +int report_softirq_entry(struct trace_event_raw_softirq *ctx) +{ + unsigned int vec = ctx->vec; + struct work_key key = { + .type = KWORK_CLASS_SOFTIRQ, + .cpu = bpf_get_smp_processor_id(), + .id = (__u64)vec, + }; + + if (vec < NR_SOFTIRQS) { + return update_timestart_and_name(&perf_kwork_time, + &perf_kwork_names, &key, + softirq_name_list[vec]); + } + + return 0; +} + +SEC("tracepoint/irq/softirq_exit") +int report_softirq_exit(struct trace_event_raw_softirq *ctx) +{ + struct work_key key = { + .type = KWORK_CLASS_SOFTIRQ, + .cpu = bpf_get_smp_processor_id(), + .id = (__u64)ctx->vec, + }; + + return update_timeend(&perf_kwork_report, &perf_kwork_time, &key); +} + +SEC("tracepoint/irq/softirq_raise") +int latency_softirq_raise(struct trace_event_raw_softirq *ctx) +{ + unsigned int vec = ctx->vec; + struct work_key key = { + .type = KWORK_CLASS_SOFTIRQ, + .cpu = bpf_get_smp_processor_id(), + .id = (__u64)vec, + }; + + if (vec < NR_SOFTIRQS) { + return update_timestart_and_name(&perf_kwork_time, + &perf_kwork_names, &key, + softirq_name_list[vec]); + } + + return 0; +} + +SEC("tracepoint/irq/softirq_entry") +int latency_softirq_entry(struct trace_event_raw_softirq *ctx) +{ + struct work_key key = { + .type = KWORK_CLASS_SOFTIRQ, + .cpu = bpf_get_smp_processor_id(), + .id = (__u64)ctx->vec, + }; + + return update_timeend(&perf_kwork_report, &perf_kwork_time, &key); +} + char LICENSE[] SEC("license") = "Dual BSD/GPL"; |