2014-08-15 23:08:36 +04:00
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#include <sys/time.h>
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#include <sys/prctl.h>
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#include <time.h>
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#include <stdlib.h>
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#include "parse-events.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "thread_map.h"
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#include "cpumap.h"
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#include "tests.h"
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static int spin_sleep(void)
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{
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struct timeval start, now, diff, maxtime;
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struct timespec ts;
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int err, i;
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maxtime.tv_sec = 0;
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maxtime.tv_usec = 50000;
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err = gettimeofday(&start, NULL);
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if (err)
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return err;
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/* Spin for 50ms */
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while (1) {
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for (i = 0; i < 1000; i++)
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barrier();
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err = gettimeofday(&now, NULL);
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if (err)
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return err;
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timersub(&now, &start, &diff);
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if (timercmp(&diff, &maxtime, > /* For checkpatch */))
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break;
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}
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ts.tv_nsec = 50 * 1000 * 1000;
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ts.tv_sec = 0;
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/* Sleep for 50ms */
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err = nanosleep(&ts, NULL);
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if (err == EINTR)
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err = 0;
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return err;
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}
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struct switch_tracking {
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struct perf_evsel *switch_evsel;
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struct perf_evsel *cycles_evsel;
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pid_t *tids;
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int nr_tids;
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int comm_seen[4];
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int cycles_before_comm_1;
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int cycles_between_comm_2_and_comm_3;
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int cycles_after_comm_4;
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};
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static int check_comm(struct switch_tracking *switch_tracking,
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union perf_event *event, const char *comm, int nr)
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{
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if (event->header.type == PERF_RECORD_COMM &&
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(pid_t)event->comm.pid == getpid() &&
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(pid_t)event->comm.tid == getpid() &&
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strcmp(event->comm.comm, comm) == 0) {
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if (switch_tracking->comm_seen[nr]) {
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pr_debug("Duplicate comm event\n");
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return -1;
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}
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switch_tracking->comm_seen[nr] = 1;
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pr_debug3("comm event: %s nr: %d\n", event->comm.comm, nr);
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return 1;
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}
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return 0;
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}
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static int check_cpu(struct switch_tracking *switch_tracking, int cpu)
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{
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int i, nr = cpu + 1;
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if (cpu < 0)
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return -1;
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if (!switch_tracking->tids) {
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switch_tracking->tids = calloc(nr, sizeof(pid_t));
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if (!switch_tracking->tids)
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return -1;
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for (i = 0; i < nr; i++)
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switch_tracking->tids[i] = -1;
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switch_tracking->nr_tids = nr;
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return 0;
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}
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if (cpu >= switch_tracking->nr_tids) {
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void *addr;
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addr = realloc(switch_tracking->tids, nr * sizeof(pid_t));
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if (!addr)
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return -1;
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switch_tracking->tids = addr;
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for (i = switch_tracking->nr_tids; i < nr; i++)
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switch_tracking->tids[i] = -1;
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switch_tracking->nr_tids = nr;
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return 0;
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}
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return 0;
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}
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static int process_sample_event(struct perf_evlist *evlist,
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union perf_event *event,
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struct switch_tracking *switch_tracking)
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{
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struct perf_sample sample;
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struct perf_evsel *evsel;
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pid_t next_tid, prev_tid;
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int cpu, err;
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if (perf_evlist__parse_sample(evlist, event, &sample)) {
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pr_debug("perf_evlist__parse_sample failed\n");
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return -1;
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}
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evsel = perf_evlist__id2evsel(evlist, sample.id);
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if (evsel == switch_tracking->switch_evsel) {
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next_tid = perf_evsel__intval(evsel, &sample, "next_pid");
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prev_tid = perf_evsel__intval(evsel, &sample, "prev_pid");
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cpu = sample.cpu;
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pr_debug3("sched_switch: cpu: %d prev_tid %d next_tid %d\n",
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cpu, prev_tid, next_tid);
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err = check_cpu(switch_tracking, cpu);
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if (err)
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return err;
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/*
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* Check for no missing sched_switch events i.e. that the
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* evsel->system_wide flag has worked.
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*/
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if (switch_tracking->tids[cpu] != -1 &&
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switch_tracking->tids[cpu] != prev_tid) {
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pr_debug("Missing sched_switch events\n");
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return -1;
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}
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switch_tracking->tids[cpu] = next_tid;
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}
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if (evsel == switch_tracking->cycles_evsel) {
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pr_debug3("cycles event\n");
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if (!switch_tracking->comm_seen[0])
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switch_tracking->cycles_before_comm_1 = 1;
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if (switch_tracking->comm_seen[1] &&
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!switch_tracking->comm_seen[2])
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switch_tracking->cycles_between_comm_2_and_comm_3 = 1;
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if (switch_tracking->comm_seen[3])
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switch_tracking->cycles_after_comm_4 = 1;
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}
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return 0;
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}
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static int process_event(struct perf_evlist *evlist, union perf_event *event,
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struct switch_tracking *switch_tracking)
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{
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if (event->header.type == PERF_RECORD_SAMPLE)
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return process_sample_event(evlist, event, switch_tracking);
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if (event->header.type == PERF_RECORD_COMM) {
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int err, done = 0;
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err = check_comm(switch_tracking, event, "Test COMM 1", 0);
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if (err < 0)
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return -1;
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done += err;
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err = check_comm(switch_tracking, event, "Test COMM 2", 1);
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if (err < 0)
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return -1;
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done += err;
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err = check_comm(switch_tracking, event, "Test COMM 3", 2);
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if (err < 0)
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return -1;
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done += err;
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err = check_comm(switch_tracking, event, "Test COMM 4", 3);
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if (err < 0)
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return -1;
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done += err;
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if (done != 1) {
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pr_debug("Unexpected comm event\n");
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return -1;
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}
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}
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return 0;
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}
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struct event_node {
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struct list_head list;
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union perf_event *event;
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u64 event_time;
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};
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static int add_event(struct perf_evlist *evlist, struct list_head *events,
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union perf_event *event)
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{
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struct perf_sample sample;
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struct event_node *node;
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node = malloc(sizeof(struct event_node));
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if (!node) {
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pr_debug("malloc failed\n");
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return -1;
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}
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node->event = event;
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list_add(&node->list, events);
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if (perf_evlist__parse_sample(evlist, event, &sample)) {
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pr_debug("perf_evlist__parse_sample failed\n");
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return -1;
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}
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if (!sample.time) {
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pr_debug("event with no time\n");
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return -1;
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}
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node->event_time = sample.time;
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return 0;
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}
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static void free_event_nodes(struct list_head *events)
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{
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struct event_node *node;
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while (!list_empty(events)) {
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node = list_entry(events->next, struct event_node, list);
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list_del(&node->list);
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free(node);
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}
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}
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static int compar(const void *a, const void *b)
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{
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const struct event_node *nodea = a;
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const struct event_node *nodeb = b;
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s64 cmp = nodea->event_time - nodeb->event_time;
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return cmp;
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}
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static int process_events(struct perf_evlist *evlist,
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struct switch_tracking *switch_tracking)
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{
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union perf_event *event;
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unsigned pos, cnt = 0;
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LIST_HEAD(events);
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struct event_node *events_array, *node;
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int i, ret;
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for (i = 0; i < evlist->nr_mmaps; i++) {
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while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
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cnt += 1;
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ret = add_event(evlist, &events, event);
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perf_evlist__mmap_consume(evlist, i);
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if (ret < 0)
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goto out_free_nodes;
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}
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}
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events_array = calloc(cnt, sizeof(struct event_node));
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if (!events_array) {
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pr_debug("calloc failed\n");
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ret = -1;
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goto out_free_nodes;
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}
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pos = 0;
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list_for_each_entry(node, &events, list)
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events_array[pos++] = *node;
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qsort(events_array, cnt, sizeof(struct event_node), compar);
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for (pos = 0; pos < cnt; pos++) {
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ret = process_event(evlist, events_array[pos].event,
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switch_tracking);
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if (ret < 0)
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goto out_free;
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}
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ret = 0;
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out_free:
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pr_debug("%u events recorded\n", cnt);
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free(events_array);
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out_free_nodes:
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free_event_nodes(&events);
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return ret;
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}
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/**
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* test__switch_tracking - test using sched_switch and tracking events.
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*
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* This function implements a test that checks that sched_switch events and
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* tracking events can be recorded for a workload (current process) using the
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* evsel->system_wide and evsel->tracking flags (respectively) with other events
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* sometimes enabled or disabled.
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*/
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int test__switch_tracking(void)
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{
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const char *sched_switch = "sched:sched_switch";
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struct switch_tracking switch_tracking = { .tids = NULL, };
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struct record_opts opts = {
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.mmap_pages = UINT_MAX,
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.user_freq = UINT_MAX,
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.user_interval = ULLONG_MAX,
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.freq = 4000,
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.target = {
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.uses_mmap = true,
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},
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};
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struct thread_map *threads = NULL;
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struct cpu_map *cpus = NULL;
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struct perf_evlist *evlist = NULL;
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struct perf_evsel *evsel, *cpu_clocks_evsel, *cycles_evsel;
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struct perf_evsel *switch_evsel, *tracking_evsel;
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const char *comm;
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int err = -1;
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threads = thread_map__new(-1, getpid(), UINT_MAX);
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if (!threads) {
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pr_debug("thread_map__new failed!\n");
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goto out_err;
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}
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cpus = cpu_map__new(NULL);
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if (!cpus) {
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pr_debug("cpu_map__new failed!\n");
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goto out_err;
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}
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evlist = perf_evlist__new();
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if (!evlist) {
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pr_debug("perf_evlist__new failed!\n");
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goto out_err;
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}
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perf_evlist__set_maps(evlist, cpus, threads);
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/* First event */
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perf tools: Add parse_events_error interface
Adding support to return error information from parse_events function.
Following struct will be populated by parse_events function on return:
struct parse_events_error {
int idx;
char *str;
char *help;
};
where 'idx' is the position in the string where the parsing failed,
'str' contains dynamically allocated error string describing the error
and 'help' is optional help string.
The change contains reporting function, which currently does not display
anything. The code changes to supply error data for specific event types
are coming in next patches. However this is what the expected output is:
$ sudo perf record -e 'sched:krava' ls
event syntax error: 'sched:krava'
\___ unknown tracepoint
...
$ perf record -e 'cpu/even=0x1/' ls
event syntax error: 'cpu/even=0x1/'
\___ unknown term
valid terms: pc,any,inv,edge,cmask,event,in_tx,ldlat,umask,in_tx_cp,offcore_rsp,config,config1,config2,name,period,branch_type
...
$ perf record -e cycles,cache-mises ls
event syntax error: '..es,cache-mises'
\___ parser error
...
The output functions cut the beginning of the event string so the error
starts up to 10th character and cut the end of the string of it crosses
the terminal width.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429729824-13932-2-git-send-email-jolsa@kernel.org
[ Renamed 'error' variables to 'err', not to clash with util.h error() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-22 22:10:16 +03:00
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err = parse_events(evlist, "cpu-clock:u", NULL);
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2014-08-15 23:08:36 +04:00
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if (err) {
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pr_debug("Failed to parse event dummy:u\n");
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goto out_err;
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}
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cpu_clocks_evsel = perf_evlist__last(evlist);
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/* Second event */
|
perf tools: Add parse_events_error interface
Adding support to return error information from parse_events function.
Following struct will be populated by parse_events function on return:
struct parse_events_error {
int idx;
char *str;
char *help;
};
where 'idx' is the position in the string where the parsing failed,
'str' contains dynamically allocated error string describing the error
and 'help' is optional help string.
The change contains reporting function, which currently does not display
anything. The code changes to supply error data for specific event types
are coming in next patches. However this is what the expected output is:
$ sudo perf record -e 'sched:krava' ls
event syntax error: 'sched:krava'
\___ unknown tracepoint
...
$ perf record -e 'cpu/even=0x1/' ls
event syntax error: 'cpu/even=0x1/'
\___ unknown term
valid terms: pc,any,inv,edge,cmask,event,in_tx,ldlat,umask,in_tx_cp,offcore_rsp,config,config1,config2,name,period,branch_type
...
$ perf record -e cycles,cache-mises ls
event syntax error: '..es,cache-mises'
\___ parser error
...
The output functions cut the beginning of the event string so the error
starts up to 10th character and cut the end of the string of it crosses
the terminal width.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429729824-13932-2-git-send-email-jolsa@kernel.org
[ Renamed 'error' variables to 'err', not to clash with util.h error() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-22 22:10:16 +03:00
|
|
|
err = parse_events(evlist, "cycles:u", NULL);
|
2014-08-15 23:08:36 +04:00
|
|
|
if (err) {
|
|
|
|
pr_debug("Failed to parse event cycles:u\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
cycles_evsel = perf_evlist__last(evlist);
|
|
|
|
|
|
|
|
/* Third event */
|
|
|
|
if (!perf_evlist__can_select_event(evlist, sched_switch)) {
|
|
|
|
fprintf(stderr, " (no sched_switch)");
|
|
|
|
err = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
perf tools: Add parse_events_error interface
Adding support to return error information from parse_events function.
Following struct will be populated by parse_events function on return:
struct parse_events_error {
int idx;
char *str;
char *help;
};
where 'idx' is the position in the string where the parsing failed,
'str' contains dynamically allocated error string describing the error
and 'help' is optional help string.
The change contains reporting function, which currently does not display
anything. The code changes to supply error data for specific event types
are coming in next patches. However this is what the expected output is:
$ sudo perf record -e 'sched:krava' ls
event syntax error: 'sched:krava'
\___ unknown tracepoint
...
$ perf record -e 'cpu/even=0x1/' ls
event syntax error: 'cpu/even=0x1/'
\___ unknown term
valid terms: pc,any,inv,edge,cmask,event,in_tx,ldlat,umask,in_tx_cp,offcore_rsp,config,config1,config2,name,period,branch_type
...
$ perf record -e cycles,cache-mises ls
event syntax error: '..es,cache-mises'
\___ parser error
...
The output functions cut the beginning of the event string so the error
starts up to 10th character and cut the end of the string of it crosses
the terminal width.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429729824-13932-2-git-send-email-jolsa@kernel.org
[ Renamed 'error' variables to 'err', not to clash with util.h error() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-22 22:10:16 +03:00
|
|
|
err = parse_events(evlist, sched_switch, NULL);
|
2014-08-15 23:08:36 +04:00
|
|
|
if (err) {
|
|
|
|
pr_debug("Failed to parse event %s\n", sched_switch);
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch_evsel = perf_evlist__last(evlist);
|
|
|
|
|
|
|
|
perf_evsel__set_sample_bit(switch_evsel, CPU);
|
|
|
|
perf_evsel__set_sample_bit(switch_evsel, TIME);
|
|
|
|
|
|
|
|
switch_evsel->system_wide = true;
|
|
|
|
switch_evsel->no_aux_samples = true;
|
|
|
|
switch_evsel->immediate = true;
|
|
|
|
|
|
|
|
/* Test moving an event to the front */
|
|
|
|
if (cycles_evsel == perf_evlist__first(evlist)) {
|
|
|
|
pr_debug("cycles event already at front");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
perf_evlist__to_front(evlist, cycles_evsel);
|
|
|
|
if (cycles_evsel != perf_evlist__first(evlist)) {
|
|
|
|
pr_debug("Failed to move cycles event to front");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
perf_evsel__set_sample_bit(cycles_evsel, CPU);
|
|
|
|
perf_evsel__set_sample_bit(cycles_evsel, TIME);
|
|
|
|
|
|
|
|
/* Fourth event */
|
perf tools: Add parse_events_error interface
Adding support to return error information from parse_events function.
Following struct will be populated by parse_events function on return:
struct parse_events_error {
int idx;
char *str;
char *help;
};
where 'idx' is the position in the string where the parsing failed,
'str' contains dynamically allocated error string describing the error
and 'help' is optional help string.
The change contains reporting function, which currently does not display
anything. The code changes to supply error data for specific event types
are coming in next patches. However this is what the expected output is:
$ sudo perf record -e 'sched:krava' ls
event syntax error: 'sched:krava'
\___ unknown tracepoint
...
$ perf record -e 'cpu/even=0x1/' ls
event syntax error: 'cpu/even=0x1/'
\___ unknown term
valid terms: pc,any,inv,edge,cmask,event,in_tx,ldlat,umask,in_tx_cp,offcore_rsp,config,config1,config2,name,period,branch_type
...
$ perf record -e cycles,cache-mises ls
event syntax error: '..es,cache-mises'
\___ parser error
...
The output functions cut the beginning of the event string so the error
starts up to 10th character and cut the end of the string of it crosses
the terminal width.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429729824-13932-2-git-send-email-jolsa@kernel.org
[ Renamed 'error' variables to 'err', not to clash with util.h error() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-22 22:10:16 +03:00
|
|
|
err = parse_events(evlist, "dummy:u", NULL);
|
2014-08-15 23:08:36 +04:00
|
|
|
if (err) {
|
|
|
|
pr_debug("Failed to parse event dummy:u\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
tracking_evsel = perf_evlist__last(evlist);
|
|
|
|
|
|
|
|
perf_evlist__set_tracking_event(evlist, tracking_evsel);
|
|
|
|
|
|
|
|
tracking_evsel->attr.freq = 0;
|
|
|
|
tracking_evsel->attr.sample_period = 1;
|
|
|
|
|
|
|
|
perf_evsel__set_sample_bit(tracking_evsel, TIME);
|
|
|
|
|
|
|
|
/* Config events */
|
|
|
|
perf_evlist__config(evlist, &opts);
|
|
|
|
|
|
|
|
/* Check moved event is still at the front */
|
|
|
|
if (cycles_evsel != perf_evlist__first(evlist)) {
|
|
|
|
pr_debug("Front event no longer at front");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check tracking event is tracking */
|
|
|
|
if (!tracking_evsel->attr.mmap || !tracking_evsel->attr.comm) {
|
|
|
|
pr_debug("Tracking event not tracking\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check non-tracking events are not tracking */
|
|
|
|
evlist__for_each(evlist, evsel) {
|
|
|
|
if (evsel != tracking_evsel) {
|
|
|
|
if (evsel->attr.mmap || evsel->attr.comm) {
|
|
|
|
pr_debug("Non-tracking event is tracking\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (perf_evlist__open(evlist) < 0) {
|
|
|
|
fprintf(stderr, " (not supported)");
|
|
|
|
err = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = perf_evlist__mmap(evlist, UINT_MAX, false);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("perf_evlist__mmap failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
perf_evlist__enable(evlist);
|
|
|
|
|
|
|
|
err = perf_evlist__disable_event(evlist, cpu_clocks_evsel);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("perf_evlist__disable_event failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = spin_sleep();
|
|
|
|
if (err) {
|
|
|
|
pr_debug("spin_sleep failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
comm = "Test COMM 1";
|
|
|
|
err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("PR_SET_NAME failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = perf_evlist__disable_event(evlist, cycles_evsel);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("perf_evlist__disable_event failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
comm = "Test COMM 2";
|
|
|
|
err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("PR_SET_NAME failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = spin_sleep();
|
|
|
|
if (err) {
|
|
|
|
pr_debug("spin_sleep failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
comm = "Test COMM 3";
|
|
|
|
err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("PR_SET_NAME failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = perf_evlist__enable_event(evlist, cycles_evsel);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("perf_evlist__disable_event failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
comm = "Test COMM 4";
|
|
|
|
err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0);
|
|
|
|
if (err) {
|
|
|
|
pr_debug("PR_SET_NAME failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = spin_sleep();
|
|
|
|
if (err) {
|
|
|
|
pr_debug("spin_sleep failed!\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
perf_evlist__disable(evlist);
|
|
|
|
|
|
|
|
switch_tracking.switch_evsel = switch_evsel;
|
|
|
|
switch_tracking.cycles_evsel = cycles_evsel;
|
|
|
|
|
|
|
|
err = process_events(evlist, &switch_tracking);
|
|
|
|
|
|
|
|
zfree(&switch_tracking.tids);
|
|
|
|
|
|
|
|
if (err)
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
/* Check all 4 comm events were seen i.e. that evsel->tracking works */
|
|
|
|
if (!switch_tracking.comm_seen[0] || !switch_tracking.comm_seen[1] ||
|
|
|
|
!switch_tracking.comm_seen[2] || !switch_tracking.comm_seen[3]) {
|
|
|
|
pr_debug("Missing comm events\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check cycles event got enabled */
|
|
|
|
if (!switch_tracking.cycles_before_comm_1) {
|
|
|
|
pr_debug("Missing cycles events\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check cycles event got disabled */
|
|
|
|
if (switch_tracking.cycles_between_comm_2_and_comm_3) {
|
|
|
|
pr_debug("cycles events even though event was disabled\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check cycles event got enabled again */
|
|
|
|
if (!switch_tracking.cycles_after_comm_4) {
|
|
|
|
pr_debug("Missing cycles events\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
if (evlist) {
|
|
|
|
perf_evlist__disable(evlist);
|
|
|
|
perf_evlist__delete(evlist);
|
|
|
|
} else {
|
|
|
|
cpu_map__delete(cpus);
|
|
|
|
thread_map__delete(threads);
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
|
|
|
|
out_err:
|
|
|
|
err = -1;
|
|
|
|
goto out;
|
|
|
|
}
|