2011-01-30 12:46:46 +00:00
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/*
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* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
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*
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* Parts came from builtin-{top,stat,record}.c, see those files for further
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* copyright notes.
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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2011-09-06 15:12:26 +00:00
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#include <byteswap.h>
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2012-08-07 13:20:45 +00:00
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#include <linux/bitops.h>
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2011-09-06 15:12:26 +00:00
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#include "asm/bug.h"
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2013-02-20 15:32:30 +00:00
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#include <lk/debugfs.h>
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2012-09-11 22:24:23 +00:00
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#include "event-parse.h"
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2011-01-03 18:39:04 +00:00
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#include "evsel.h"
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2011-01-12 19:03:24 +00:00
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#include "evlist.h"
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2011-01-03 18:39:04 +00:00
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#include "util.h"
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2011-01-04 01:09:46 +00:00
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#include "cpumap.h"
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2011-01-18 17:15:24 +00:00
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#include "thread_map.h"
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2012-04-26 05:15:22 +00:00
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#include "target.h"
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2012-11-19 22:21:03 +00:00
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#include <linux/hw_breakpoint.h>
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#include <linux/perf_event.h>
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2012-08-07 13:20:47 +00:00
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#include "perf_regs.h"
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2011-01-03 18:39:04 +00:00
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2012-12-13 16:13:07 +00:00
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static struct {
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bool sample_id_all;
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bool exclude_guest;
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} perf_missing_features;
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2011-01-03 19:45:52 +00:00
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#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
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2012-08-01 21:53:11 +00:00
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static int __perf_evsel__sample_size(u64 sample_type)
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2011-06-02 14:04:54 +00:00
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{
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u64 mask = sample_type & PERF_SAMPLE_MASK;
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int size = 0;
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int i;
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for (i = 0; i < 64; i++) {
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if (mask & (1ULL << i))
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size++;
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}
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size *= sizeof(u64);
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return size;
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}
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2012-03-22 13:37:26 +00:00
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void hists__init(struct hists *hists)
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2011-11-04 10:16:58 +00:00
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{
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memset(hists, 0, sizeof(*hists));
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hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT;
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hists->entries_in = &hists->entries_in_array[0];
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hists->entries_collapsed = RB_ROOT;
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hists->entries = RB_ROOT;
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pthread_mutex_init(&hists->lock, NULL);
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}
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2012-12-10 17:53:43 +00:00
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void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
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enum perf_event_sample_format bit)
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{
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if (!(evsel->attr.sample_type & bit)) {
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evsel->attr.sample_type |= bit;
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evsel->sample_size += sizeof(u64);
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}
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}
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void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
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enum perf_event_sample_format bit)
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{
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if (evsel->attr.sample_type & bit) {
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evsel->attr.sample_type &= ~bit;
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evsel->sample_size -= sizeof(u64);
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}
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}
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2012-12-10 18:21:30 +00:00
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void perf_evsel__set_sample_id(struct perf_evsel *evsel)
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{
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perf_evsel__set_sample_bit(evsel, ID);
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evsel->attr.read_format |= PERF_FORMAT_ID;
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}
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2011-01-18 23:41:45 +00:00
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void perf_evsel__init(struct perf_evsel *evsel,
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struct perf_event_attr *attr, int idx)
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{
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evsel->idx = idx;
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evsel->attr = *attr;
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2012-11-29 06:38:29 +00:00
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evsel->leader = evsel;
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2011-01-18 23:41:45 +00:00
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INIT_LIST_HEAD(&evsel->node);
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2011-10-05 20:50:23 +00:00
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hists__init(&evsel->hists);
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2012-08-01 21:53:11 +00:00
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evsel->sample_size = __perf_evsel__sample_size(attr->sample_type);
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2011-01-18 23:41:45 +00:00
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}
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2011-01-07 03:11:09 +00:00
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struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)
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2011-01-03 18:39:04 +00:00
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{
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struct perf_evsel *evsel = zalloc(sizeof(*evsel));
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2011-01-18 23:41:45 +00:00
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if (evsel != NULL)
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perf_evsel__init(evsel, attr, idx);
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2011-01-03 18:39:04 +00:00
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return evsel;
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}
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2012-09-26 23:24:19 +00:00
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struct event_format *event_format__new(const char *sys, const char *name)
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2012-09-18 14:21:50 +00:00
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{
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int fd, n;
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char *filename;
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void *bf = NULL, *nbf;
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size_t size = 0, alloc_size = 0;
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struct event_format *format = NULL;
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if (asprintf(&filename, "%s/%s/%s/format", tracing_events_path, sys, name) < 0)
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goto out;
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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goto out_free_filename;
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do {
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if (size == alloc_size) {
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alloc_size += BUFSIZ;
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nbf = realloc(bf, alloc_size);
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if (nbf == NULL)
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goto out_free_bf;
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bf = nbf;
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}
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n = read(fd, bf + size, BUFSIZ);
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if (n < 0)
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goto out_free_bf;
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size += n;
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} while (n > 0);
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pevent_parse_format(&format, bf, size, sys);
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out_free_bf:
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free(bf);
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close(fd);
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out_free_filename:
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free(filename);
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out:
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return format;
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}
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struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx)
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{
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struct perf_evsel *evsel = zalloc(sizeof(*evsel));
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if (evsel != NULL) {
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struct perf_event_attr attr = {
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2012-09-26 15:28:26 +00:00
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.type = PERF_TYPE_TRACEPOINT,
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.sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
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PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD),
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2012-09-18 14:21:50 +00:00
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};
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2012-09-26 20:11:38 +00:00
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if (asprintf(&evsel->name, "%s:%s", sys, name) < 0)
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goto out_free;
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2012-09-18 14:21:50 +00:00
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evsel->tp_format = event_format__new(sys, name);
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if (evsel->tp_format == NULL)
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goto out_free;
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2012-09-26 15:28:26 +00:00
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event_attr_init(&attr);
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2012-09-18 14:21:50 +00:00
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attr.config = evsel->tp_format->id;
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2012-09-26 15:28:26 +00:00
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attr.sample_period = 1;
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2012-09-18 14:21:50 +00:00
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perf_evsel__init(evsel, &attr, idx);
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}
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return evsel;
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out_free:
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2012-09-26 20:11:38 +00:00
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free(evsel->name);
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2012-09-18 14:21:50 +00:00
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free(evsel);
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return NULL;
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}
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2012-09-06 16:11:18 +00:00
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const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = {
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2012-05-25 19:38:11 +00:00
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"cycles",
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"instructions",
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"cache-references",
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"cache-misses",
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"branches",
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"branch-misses",
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"bus-cycles",
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"stalled-cycles-frontend",
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"stalled-cycles-backend",
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"ref-cycles",
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};
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2012-06-13 18:52:42 +00:00
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static const char *__perf_evsel__hw_name(u64 config)
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2012-05-25 19:38:11 +00:00
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{
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if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config])
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return perf_evsel__hw_names[config];
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return "unknown-hardware";
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}
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2012-06-11 16:33:09 +00:00
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static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size)
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2012-05-25 19:38:11 +00:00
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{
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2012-06-11 16:33:09 +00:00
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int colon = 0, r = 0;
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2012-05-25 19:38:11 +00:00
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struct perf_event_attr *attr = &evsel->attr;
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bool exclude_guest_default = false;
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#define MOD_PRINT(context, mod) do { \
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if (!attr->exclude_##context) { \
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2012-06-11 16:33:09 +00:00
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if (!colon) colon = ++r; \
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2012-05-25 19:38:11 +00:00
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r += scnprintf(bf + r, size - r, "%c", mod); \
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} } while(0)
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if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) {
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MOD_PRINT(kernel, 'k');
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MOD_PRINT(user, 'u');
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MOD_PRINT(hv, 'h');
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exclude_guest_default = true;
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}
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if (attr->precise_ip) {
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if (!colon)
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2012-06-11 16:33:09 +00:00
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colon = ++r;
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2012-05-25 19:38:11 +00:00
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r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp");
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exclude_guest_default = true;
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}
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if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) {
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MOD_PRINT(host, 'H');
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MOD_PRINT(guest, 'G');
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}
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#undef MOD_PRINT
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if (colon)
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2012-06-11 16:33:09 +00:00
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bf[colon - 1] = ':';
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2012-05-25 19:38:11 +00:00
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return r;
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}
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2012-06-11 16:33:09 +00:00
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static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size)
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{
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int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config));
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return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
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}
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2012-09-06 16:11:18 +00:00
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const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = {
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2012-06-11 17:36:20 +00:00
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"cpu-clock",
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"task-clock",
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"page-faults",
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"context-switches",
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2012-09-06 16:11:18 +00:00
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"cpu-migrations",
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2012-06-11 17:36:20 +00:00
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"minor-faults",
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"major-faults",
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"alignment-faults",
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"emulation-faults",
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};
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2012-06-13 18:52:42 +00:00
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static const char *__perf_evsel__sw_name(u64 config)
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2012-06-11 17:36:20 +00:00
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{
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if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config])
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return perf_evsel__sw_names[config];
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return "unknown-software";
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}
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static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size)
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{
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int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config));
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return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
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}
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2012-06-28 21:18:49 +00:00
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static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type)
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{
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int r;
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r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr);
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if (type & HW_BREAKPOINT_R)
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r += scnprintf(bf + r, size - r, "r");
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if (type & HW_BREAKPOINT_W)
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r += scnprintf(bf + r, size - r, "w");
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if (type & HW_BREAKPOINT_X)
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r += scnprintf(bf + r, size - r, "x");
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return r;
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}
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static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size)
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{
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struct perf_event_attr *attr = &evsel->attr;
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int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type);
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return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
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}
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2012-06-11 17:08:07 +00:00
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const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
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[PERF_EVSEL__MAX_ALIASES] = {
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{ "L1-dcache", "l1-d", "l1d", "L1-data", },
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{ "L1-icache", "l1-i", "l1i", "L1-instruction", },
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{ "LLC", "L2", },
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{ "dTLB", "d-tlb", "Data-TLB", },
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{ "iTLB", "i-tlb", "Instruction-TLB", },
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{ "branch", "branches", "bpu", "btb", "bpc", },
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{ "node", },
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};
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const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
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[PERF_EVSEL__MAX_ALIASES] = {
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{ "load", "loads", "read", },
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{ "store", "stores", "write", },
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{ "prefetch", "prefetches", "speculative-read", "speculative-load", },
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};
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const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
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[PERF_EVSEL__MAX_ALIASES] = {
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{ "refs", "Reference", "ops", "access", },
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{ "misses", "miss", },
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};
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#define C(x) PERF_COUNT_HW_CACHE_##x
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#define CACHE_READ (1 << C(OP_READ))
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#define CACHE_WRITE (1 << C(OP_WRITE))
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#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
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#define COP(x) (1 << x)
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/*
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|
|
* cache operartion stat
|
|
|
|
* L1I : Read and prefetch only
|
|
|
|
* ITLB and BPU : Read-only
|
|
|
|
*/
|
|
|
|
static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = {
|
|
|
|
[C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
|
|
|
|
[C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
|
|
|
|
[C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
|
|
|
|
[C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
|
|
|
|
[C(ITLB)] = (CACHE_READ),
|
|
|
|
[C(BPU)] = (CACHE_READ),
|
|
|
|
[C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
|
|
|
|
};
|
|
|
|
|
|
|
|
bool perf_evsel__is_cache_op_valid(u8 type, u8 op)
|
|
|
|
{
|
|
|
|
if (perf_evsel__hw_cache_stat[type] & COP(op))
|
|
|
|
return true; /* valid */
|
|
|
|
else
|
|
|
|
return false; /* invalid */
|
|
|
|
}
|
|
|
|
|
|
|
|
int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
|
|
|
|
char *bf, size_t size)
|
|
|
|
{
|
|
|
|
if (result) {
|
|
|
|
return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0],
|
|
|
|
perf_evsel__hw_cache_op[op][0],
|
|
|
|
perf_evsel__hw_cache_result[result][0]);
|
|
|
|
}
|
|
|
|
|
|
|
|
return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0],
|
|
|
|
perf_evsel__hw_cache_op[op][1]);
|
|
|
|
}
|
|
|
|
|
2012-06-13 18:52:42 +00:00
|
|
|
static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size)
|
2012-06-11 17:08:07 +00:00
|
|
|
{
|
|
|
|
u8 op, result, type = (config >> 0) & 0xff;
|
|
|
|
const char *err = "unknown-ext-hardware-cache-type";
|
|
|
|
|
|
|
|
if (type > PERF_COUNT_HW_CACHE_MAX)
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
op = (config >> 8) & 0xff;
|
|
|
|
err = "unknown-ext-hardware-cache-op";
|
|
|
|
if (op > PERF_COUNT_HW_CACHE_OP_MAX)
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
result = (config >> 16) & 0xff;
|
|
|
|
err = "unknown-ext-hardware-cache-result";
|
|
|
|
if (result > PERF_COUNT_HW_CACHE_RESULT_MAX)
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
err = "invalid-cache";
|
|
|
|
if (!perf_evsel__is_cache_op_valid(type, op))
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size);
|
|
|
|
out_err:
|
|
|
|
return scnprintf(bf, size, "%s", err);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size)
|
|
|
|
{
|
|
|
|
int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size);
|
|
|
|
return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret);
|
|
|
|
}
|
|
|
|
|
2012-06-13 14:53:37 +00:00
|
|
|
static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size)
|
|
|
|
{
|
|
|
|
int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config);
|
|
|
|
return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret);
|
|
|
|
}
|
|
|
|
|
2012-06-12 15:34:58 +00:00
|
|
|
const char *perf_evsel__name(struct perf_evsel *evsel)
|
2012-06-12 13:29:12 +00:00
|
|
|
{
|
2012-06-12 15:34:58 +00:00
|
|
|
char bf[128];
|
2012-06-12 13:29:12 +00:00
|
|
|
|
2012-06-12 15:34:58 +00:00
|
|
|
if (evsel->name)
|
|
|
|
return evsel->name;
|
2012-05-25 19:38:11 +00:00
|
|
|
|
|
|
|
switch (evsel->attr.type) {
|
|
|
|
case PERF_TYPE_RAW:
|
2012-06-13 14:53:37 +00:00
|
|
|
perf_evsel__raw_name(evsel, bf, sizeof(bf));
|
2012-05-25 19:38:11 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case PERF_TYPE_HARDWARE:
|
2012-06-12 15:34:58 +00:00
|
|
|
perf_evsel__hw_name(evsel, bf, sizeof(bf));
|
2012-05-25 19:38:11 +00:00
|
|
|
break;
|
2012-06-11 17:08:07 +00:00
|
|
|
|
|
|
|
case PERF_TYPE_HW_CACHE:
|
2012-06-12 15:34:58 +00:00
|
|
|
perf_evsel__hw_cache_name(evsel, bf, sizeof(bf));
|
2012-06-11 17:08:07 +00:00
|
|
|
break;
|
|
|
|
|
2012-06-11 17:36:20 +00:00
|
|
|
case PERF_TYPE_SOFTWARE:
|
2012-06-12 15:34:58 +00:00
|
|
|
perf_evsel__sw_name(evsel, bf, sizeof(bf));
|
2012-06-11 17:36:20 +00:00
|
|
|
break;
|
|
|
|
|
2012-06-12 13:29:12 +00:00
|
|
|
case PERF_TYPE_TRACEPOINT:
|
2012-06-12 15:34:58 +00:00
|
|
|
scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint");
|
2012-06-12 13:29:12 +00:00
|
|
|
break;
|
|
|
|
|
2012-06-28 21:18:49 +00:00
|
|
|
case PERF_TYPE_BREAKPOINT:
|
|
|
|
perf_evsel__bp_name(evsel, bf, sizeof(bf));
|
|
|
|
break;
|
|
|
|
|
2012-05-25 19:38:11 +00:00
|
|
|
default:
|
2012-08-16 19:10:18 +00:00
|
|
|
scnprintf(bf, sizeof(bf), "unknown attr type: %d",
|
|
|
|
evsel->attr.type);
|
2012-06-12 13:29:12 +00:00
|
|
|
break;
|
2012-05-25 19:38:11 +00:00
|
|
|
}
|
|
|
|
|
2012-06-12 15:34:58 +00:00
|
|
|
evsel->name = strdup(bf);
|
|
|
|
|
|
|
|
return evsel->name ?: "unknown";
|
2012-05-25 19:38:11 +00:00
|
|
|
}
|
|
|
|
|
2013-01-22 09:09:44 +00:00
|
|
|
const char *perf_evsel__group_name(struct perf_evsel *evsel)
|
|
|
|
{
|
|
|
|
return evsel->group_name ?: "anon group";
|
|
|
|
}
|
|
|
|
|
|
|
|
int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct perf_evsel *pos;
|
|
|
|
const char *group_name = perf_evsel__group_name(evsel);
|
|
|
|
|
|
|
|
ret = scnprintf(buf, size, "%s", group_name);
|
|
|
|
|
|
|
|
ret += scnprintf(buf + ret, size - ret, " { %s",
|
|
|
|
perf_evsel__name(evsel));
|
|
|
|
|
|
|
|
for_each_group_member(pos, evsel)
|
|
|
|
ret += scnprintf(buf + ret, size - ret, ", %s",
|
|
|
|
perf_evsel__name(pos));
|
|
|
|
|
|
|
|
ret += scnprintf(buf + ret, size - ret, " }");
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-11-12 17:34:01 +00:00
|
|
|
/*
|
|
|
|
* The enable_on_exec/disabled value strategy:
|
|
|
|
*
|
|
|
|
* 1) For any type of traced program:
|
|
|
|
* - all independent events and group leaders are disabled
|
|
|
|
* - all group members are enabled
|
|
|
|
*
|
|
|
|
* Group members are ruled by group leaders. They need to
|
|
|
|
* be enabled, because the group scheduling relies on that.
|
|
|
|
*
|
|
|
|
* 2) For traced programs executed by perf:
|
|
|
|
* - all independent events and group leaders have
|
|
|
|
* enable_on_exec set
|
|
|
|
* - we don't specifically enable or disable any event during
|
|
|
|
* the record command
|
|
|
|
*
|
|
|
|
* Independent events and group leaders are initially disabled
|
|
|
|
* and get enabled by exec. Group members are ruled by group
|
|
|
|
* leaders as stated in 1).
|
|
|
|
*
|
|
|
|
* 3) For traced programs attached by perf (pid/tid):
|
|
|
|
* - we specifically enable or disable all events during
|
|
|
|
* the record command
|
|
|
|
*
|
|
|
|
* When attaching events to already running traced we
|
|
|
|
* enable/disable events specifically, as there's no
|
|
|
|
* initial traced exec call.
|
|
|
|
*/
|
2012-11-12 17:34:00 +00:00
|
|
|
void perf_evsel__config(struct perf_evsel *evsel,
|
|
|
|
struct perf_record_opts *opts)
|
2011-11-08 16:41:57 +00:00
|
|
|
{
|
|
|
|
struct perf_event_attr *attr = &evsel->attr;
|
|
|
|
int track = !evsel->idx; /* only the first counter needs these */
|
|
|
|
|
2012-12-13 16:13:07 +00:00
|
|
|
attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1;
|
2011-11-08 16:41:57 +00:00
|
|
|
attr->inherit = !opts->no_inherit;
|
|
|
|
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, IP);
|
|
|
|
perf_evsel__set_sample_bit(evsel, TID);
|
2011-11-08 16:41:57 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We default some events to a 1 default interval. But keep
|
|
|
|
* it a weak assumption overridable by the user.
|
|
|
|
*/
|
|
|
|
if (!attr->sample_period || (opts->user_freq != UINT_MAX &&
|
|
|
|
opts->user_interval != ULLONG_MAX)) {
|
|
|
|
if (opts->freq) {
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, PERIOD);
|
2011-11-08 16:41:57 +00:00
|
|
|
attr->freq = 1;
|
|
|
|
attr->sample_freq = opts->freq;
|
|
|
|
} else {
|
|
|
|
attr->sample_period = opts->default_interval;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (opts->no_samples)
|
|
|
|
attr->sample_freq = 0;
|
|
|
|
|
|
|
|
if (opts->inherit_stat)
|
|
|
|
attr->inherit_stat = 1;
|
|
|
|
|
|
|
|
if (opts->sample_address) {
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, ADDR);
|
2011-11-08 16:41:57 +00:00
|
|
|
attr->mmap_data = track;
|
|
|
|
}
|
|
|
|
|
2012-08-07 13:20:47 +00:00
|
|
|
if (opts->call_graph) {
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, CALLCHAIN);
|
2011-11-08 16:41:57 +00:00
|
|
|
|
2012-08-07 13:20:47 +00:00
|
|
|
if (opts->call_graph == CALLCHAIN_DWARF) {
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, REGS_USER);
|
|
|
|
perf_evsel__set_sample_bit(evsel, STACK_USER);
|
2012-08-07 13:20:47 +00:00
|
|
|
attr->sample_regs_user = PERF_REGS_MASK;
|
|
|
|
attr->sample_stack_user = opts->stack_dump_size;
|
|
|
|
attr->exclude_callchain_user = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-05-21 01:42:07 +00:00
|
|
|
if (perf_target__has_cpu(&opts->target))
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, CPU);
|
2011-11-08 16:41:57 +00:00
|
|
|
|
2011-12-20 14:32:45 +00:00
|
|
|
if (opts->period)
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, PERIOD);
|
2011-12-20 14:32:45 +00:00
|
|
|
|
2012-12-13 16:13:07 +00:00
|
|
|
if (!perf_missing_features.sample_id_all &&
|
2012-05-07 05:09:03 +00:00
|
|
|
(opts->sample_time || !opts->no_inherit ||
|
2012-05-16 09:45:47 +00:00
|
|
|
perf_target__has_cpu(&opts->target)))
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, TIME);
|
2011-11-08 16:41:57 +00:00
|
|
|
|
|
|
|
if (opts->raw_samples) {
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, TIME);
|
|
|
|
perf_evsel__set_sample_bit(evsel, RAW);
|
|
|
|
perf_evsel__set_sample_bit(evsel, CPU);
|
2011-11-08 16:41:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (opts->no_delay) {
|
|
|
|
attr->watermark = 0;
|
|
|
|
attr->wakeup_events = 1;
|
|
|
|
}
|
2012-02-09 22:21:02 +00:00
|
|
|
if (opts->branch_stack) {
|
2012-12-10 17:53:43 +00:00
|
|
|
perf_evsel__set_sample_bit(evsel, BRANCH_STACK);
|
2012-02-09 22:21:02 +00:00
|
|
|
attr->branch_sample_type = opts->branch_stack;
|
|
|
|
}
|
2011-11-08 16:41:57 +00:00
|
|
|
|
|
|
|
attr->mmap = track;
|
|
|
|
attr->comm = track;
|
|
|
|
|
2012-11-12 17:34:01 +00:00
|
|
|
/*
|
|
|
|
* XXX see the function comment above
|
|
|
|
*
|
|
|
|
* Disabling only independent events or group leaders,
|
|
|
|
* keeping group members enabled.
|
|
|
|
*/
|
2012-11-29 06:38:30 +00:00
|
|
|
if (perf_evsel__is_group_leader(evsel))
|
2012-11-12 17:34:01 +00:00
|
|
|
attr->disabled = 1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Setting enable_on_exec for independent events and
|
|
|
|
* group leaders for traced executed by perf.
|
|
|
|
*/
|
2012-11-29 06:38:30 +00:00
|
|
|
if (perf_target__none(&opts->target) && perf_evsel__is_group_leader(evsel))
|
2011-11-08 16:41:57 +00:00
|
|
|
attr->enable_on_exec = 1;
|
|
|
|
}
|
|
|
|
|
2011-01-03 18:39:04 +00:00
|
|
|
int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
|
|
|
|
{
|
2011-05-27 15:58:34 +00:00
|
|
|
int cpu, thread;
|
2011-01-03 18:39:04 +00:00
|
|
|
evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));
|
2011-05-27 15:58:34 +00:00
|
|
|
|
|
|
|
if (evsel->fd) {
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++) {
|
|
|
|
for (thread = 0; thread < nthreads; thread++) {
|
|
|
|
FD(evsel, cpu, thread) = -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-01-03 18:39:04 +00:00
|
|
|
return evsel->fd != NULL ? 0 : -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2012-09-26 18:07:39 +00:00
|
|
|
int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
|
|
|
|
const char *filter)
|
|
|
|
{
|
|
|
|
int cpu, thread;
|
|
|
|
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++) {
|
|
|
|
for (thread = 0; thread < nthreads; thread++) {
|
|
|
|
int fd = FD(evsel, cpu, thread),
|
|
|
|
err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter);
|
|
|
|
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-13 00:39:13 +00:00
|
|
|
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
|
|
|
|
{
|
2011-03-10 14:15:54 +00:00
|
|
|
evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
|
|
|
|
if (evsel->sample_id == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
evsel->id = zalloc(ncpus * nthreads * sizeof(u64));
|
|
|
|
if (evsel->id == NULL) {
|
|
|
|
xyarray__delete(evsel->sample_id);
|
|
|
|
evsel->sample_id = NULL;
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2011-01-13 00:39:13 +00:00
|
|
|
}
|
|
|
|
|
2013-03-01 18:02:27 +00:00
|
|
|
void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus)
|
|
|
|
{
|
|
|
|
memset(evsel->counts, 0, (sizeof(*evsel->counts) +
|
|
|
|
(ncpus * sizeof(struct perf_counts_values))));
|
|
|
|
}
|
|
|
|
|
2011-01-03 19:45:52 +00:00
|
|
|
int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus)
|
|
|
|
{
|
|
|
|
evsel->counts = zalloc((sizeof(*evsel->counts) +
|
|
|
|
(ncpus * sizeof(struct perf_counts_values))));
|
|
|
|
return evsel->counts != NULL ? 0 : -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2011-01-03 18:39:04 +00:00
|
|
|
void perf_evsel__free_fd(struct perf_evsel *evsel)
|
|
|
|
{
|
|
|
|
xyarray__delete(evsel->fd);
|
|
|
|
evsel->fd = NULL;
|
|
|
|
}
|
|
|
|
|
2011-01-13 00:39:13 +00:00
|
|
|
void perf_evsel__free_id(struct perf_evsel *evsel)
|
|
|
|
{
|
2011-03-10 14:15:54 +00:00
|
|
|
xyarray__delete(evsel->sample_id);
|
|
|
|
evsel->sample_id = NULL;
|
|
|
|
free(evsel->id);
|
2011-01-13 00:39:13 +00:00
|
|
|
evsel->id = NULL;
|
|
|
|
}
|
|
|
|
|
2011-01-03 19:45:52 +00:00
|
|
|
void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
|
|
|
|
{
|
|
|
|
int cpu, thread;
|
|
|
|
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++)
|
|
|
|
for (thread = 0; thread < nthreads; ++thread) {
|
|
|
|
close(FD(evsel, cpu, thread));
|
|
|
|
FD(evsel, cpu, thread) = -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-01-25 01:44:44 +00:00
|
|
|
void perf_evsel__free_counts(struct perf_evsel *evsel)
|
|
|
|
{
|
|
|
|
free(evsel->counts);
|
|
|
|
}
|
|
|
|
|
2011-01-18 23:41:45 +00:00
|
|
|
void perf_evsel__exit(struct perf_evsel *evsel)
|
2011-01-03 18:39:04 +00:00
|
|
|
{
|
|
|
|
assert(list_empty(&evsel->node));
|
2013-03-15 05:48:49 +00:00
|
|
|
perf_evsel__free_fd(evsel);
|
|
|
|
perf_evsel__free_id(evsel);
|
2011-01-18 23:41:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void perf_evsel__delete(struct perf_evsel *evsel)
|
|
|
|
{
|
|
|
|
perf_evsel__exit(evsel);
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 09:20:01 +00:00
|
|
|
close_cgroup(evsel->cgrp);
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
free(evsel->group_name);
|
2012-09-26 20:11:38 +00:00
|
|
|
if (evsel->tp_format)
|
2012-09-18 14:21:50 +00:00
|
|
|
pevent_free_format(evsel->tp_format);
|
2011-02-16 13:10:01 +00:00
|
|
|
free(evsel->name);
|
2011-01-03 18:39:04 +00:00
|
|
|
free(evsel);
|
|
|
|
}
|
2011-01-03 19:45:52 +00:00
|
|
|
|
2013-01-29 11:47:43 +00:00
|
|
|
static inline void compute_deltas(struct perf_evsel *evsel,
|
|
|
|
int cpu,
|
|
|
|
struct perf_counts_values *count)
|
|
|
|
{
|
|
|
|
struct perf_counts_values tmp;
|
|
|
|
|
|
|
|
if (!evsel->prev_raw_counts)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (cpu == -1) {
|
|
|
|
tmp = evsel->prev_raw_counts->aggr;
|
|
|
|
evsel->prev_raw_counts->aggr = *count;
|
|
|
|
} else {
|
|
|
|
tmp = evsel->prev_raw_counts->cpu[cpu];
|
|
|
|
evsel->prev_raw_counts->cpu[cpu] = *count;
|
|
|
|
}
|
|
|
|
|
|
|
|
count->val = count->val - tmp.val;
|
|
|
|
count->ena = count->ena - tmp.ena;
|
|
|
|
count->run = count->run - tmp.run;
|
|
|
|
}
|
|
|
|
|
2011-01-03 19:45:52 +00:00
|
|
|
int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
|
|
|
|
int cpu, int thread, bool scale)
|
|
|
|
{
|
|
|
|
struct perf_counts_values count;
|
|
|
|
size_t nv = scale ? 3 : 1;
|
|
|
|
|
|
|
|
if (FD(evsel, cpu, thread) < 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2011-01-04 02:13:17 +00:00
|
|
|
if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2011-01-03 19:45:52 +00:00
|
|
|
if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
|
|
|
|
return -errno;
|
|
|
|
|
2013-01-29 11:47:43 +00:00
|
|
|
compute_deltas(evsel, cpu, &count);
|
|
|
|
|
2011-01-03 19:45:52 +00:00
|
|
|
if (scale) {
|
|
|
|
if (count.run == 0)
|
|
|
|
count.val = 0;
|
|
|
|
else if (count.run < count.ena)
|
|
|
|
count.val = (u64)((double)count.val * count.ena / count.run + 0.5);
|
|
|
|
} else
|
|
|
|
count.ena = count.run = 0;
|
|
|
|
|
|
|
|
evsel->counts->cpu[cpu] = count;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int __perf_evsel__read(struct perf_evsel *evsel,
|
|
|
|
int ncpus, int nthreads, bool scale)
|
|
|
|
{
|
|
|
|
size_t nv = scale ? 3 : 1;
|
|
|
|
int cpu, thread;
|
|
|
|
struct perf_counts_values *aggr = &evsel->counts->aggr, count;
|
|
|
|
|
2011-02-03 19:26:06 +00:00
|
|
|
aggr->val = aggr->ena = aggr->run = 0;
|
2011-01-03 19:45:52 +00:00
|
|
|
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++) {
|
|
|
|
for (thread = 0; thread < nthreads; thread++) {
|
|
|
|
if (FD(evsel, cpu, thread) < 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (readn(FD(evsel, cpu, thread),
|
|
|
|
&count, nv * sizeof(u64)) < 0)
|
|
|
|
return -errno;
|
|
|
|
|
|
|
|
aggr->val += count.val;
|
|
|
|
if (scale) {
|
|
|
|
aggr->ena += count.ena;
|
|
|
|
aggr->run += count.run;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-01-29 11:47:43 +00:00
|
|
|
compute_deltas(evsel, -1, aggr);
|
|
|
|
|
2011-01-03 19:45:52 +00:00
|
|
|
evsel->counts->scaled = 0;
|
|
|
|
if (scale) {
|
|
|
|
if (aggr->run == 0) {
|
|
|
|
evsel->counts->scaled = -1;
|
|
|
|
aggr->val = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (aggr->run < aggr->ena) {
|
|
|
|
evsel->counts->scaled = 1;
|
|
|
|
aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5);
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
aggr->ena = aggr->run = 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2011-01-03 19:48:12 +00:00
|
|
|
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread)
|
|
|
|
{
|
|
|
|
struct perf_evsel *leader = evsel->leader;
|
|
|
|
int fd;
|
|
|
|
|
2012-11-29 06:38:30 +00:00
|
|
|
if (perf_evsel__is_group_leader(evsel))
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
return -1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Leader must be already processed/open,
|
|
|
|
* if not it's a bug.
|
|
|
|
*/
|
|
|
|
BUG_ON(!leader->fd);
|
|
|
|
|
|
|
|
fd = FD(leader, cpu, thread);
|
|
|
|
BUG_ON(fd == -1);
|
|
|
|
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
|
2011-01-04 13:55:27 +00:00
|
|
|
static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
struct thread_map *threads)
|
2011-01-03 19:48:12 +00:00
|
|
|
{
|
2011-01-04 13:55:27 +00:00
|
|
|
int cpu, thread;
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 09:20:01 +00:00
|
|
|
unsigned long flags = 0;
|
2011-10-25 12:42:19 +00:00
|
|
|
int pid = -1, err;
|
2011-01-03 19:48:12 +00:00
|
|
|
|
2011-01-04 13:55:27 +00:00
|
|
|
if (evsel->fd == NULL &&
|
|
|
|
perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0)
|
2011-10-25 12:42:19 +00:00
|
|
|
return -ENOMEM;
|
2011-01-04 02:13:17 +00:00
|
|
|
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 09:20:01 +00:00
|
|
|
if (evsel->cgrp) {
|
|
|
|
flags = PERF_FLAG_PID_CGROUP;
|
|
|
|
pid = evsel->cgrp->fd;
|
|
|
|
}
|
|
|
|
|
2012-12-13 16:13:07 +00:00
|
|
|
fallback_missing_features:
|
|
|
|
if (perf_missing_features.exclude_guest)
|
|
|
|
evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
|
|
|
|
retry_sample_id:
|
|
|
|
if (perf_missing_features.sample_id_all)
|
|
|
|
evsel->attr.sample_id_all = 0;
|
|
|
|
|
2011-01-04 01:09:46 +00:00
|
|
|
for (cpu = 0; cpu < cpus->nr; cpu++) {
|
2011-01-12 02:08:18 +00:00
|
|
|
|
2011-01-04 13:55:27 +00:00
|
|
|
for (thread = 0; thread < threads->nr; thread++) {
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
int group_fd;
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 09:20:01 +00:00
|
|
|
|
|
|
|
if (!evsel->cgrp)
|
|
|
|
pid = threads->map[thread];
|
|
|
|
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
group_fd = get_group_fd(evsel, cpu, thread);
|
|
|
|
|
2011-01-04 13:55:27 +00:00
|
|
|
FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr,
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 09:20:01 +00:00
|
|
|
pid,
|
2011-01-12 01:42:19 +00:00
|
|
|
cpus->map[cpu],
|
perf tool: Add cgroup support
This patch adds the ability to filter monitoring based on container groups
(cgroups) for both perf stat and perf record. It is possible to monitor
multiple cgroup in parallel. There is one cgroup per event. The cgroups to
monitor are passed via a new -G option followed by a comma separated list of
cgroup names.
The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
finds the corresponding directory in the cgroup filesystem and opens it. It
then passes that file descriptor to the kernel.
Example:
$ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
Performance counter stats for 'sleep 1':
2,368,667,414 cycles test1
2,369,661,459 cycles
<not counted> cycles test2
1.001856890 seconds time elapsed
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-14 09:20:01 +00:00
|
|
|
group_fd, flags);
|
2011-10-25 12:42:19 +00:00
|
|
|
if (FD(evsel, cpu, thread) < 0) {
|
|
|
|
err = -errno;
|
2012-12-13 16:13:07 +00:00
|
|
|
goto try_fallback;
|
2011-10-25 12:42:19 +00:00
|
|
|
}
|
2011-01-04 13:55:27 +00:00
|
|
|
}
|
2011-01-03 19:48:12 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2012-12-13 16:13:07 +00:00
|
|
|
try_fallback:
|
|
|
|
if (err != -EINVAL || cpu > 0 || thread > 0)
|
|
|
|
goto out_close;
|
|
|
|
|
|
|
|
if (!perf_missing_features.exclude_guest &&
|
|
|
|
(evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
|
|
|
|
perf_missing_features.exclude_guest = true;
|
|
|
|
goto fallback_missing_features;
|
|
|
|
} else if (!perf_missing_features.sample_id_all) {
|
|
|
|
perf_missing_features.sample_id_all = true;
|
|
|
|
goto retry_sample_id;
|
|
|
|
}
|
|
|
|
|
2011-01-03 19:48:12 +00:00
|
|
|
out_close:
|
2011-01-04 13:55:27 +00:00
|
|
|
do {
|
|
|
|
while (--thread >= 0) {
|
|
|
|
close(FD(evsel, cpu, thread));
|
|
|
|
FD(evsel, cpu, thread) = -1;
|
|
|
|
}
|
|
|
|
thread = threads->nr;
|
|
|
|
} while (--cpu >= 0);
|
2011-10-25 12:42:19 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads)
|
|
|
|
{
|
|
|
|
if (evsel->fd == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
perf_evsel__close_fd(evsel, ncpus, nthreads);
|
|
|
|
perf_evsel__free_fd(evsel);
|
|
|
|
evsel->fd = NULL;
|
2011-01-03 19:48:12 +00:00
|
|
|
}
|
|
|
|
|
2011-01-04 13:55:27 +00:00
|
|
|
static struct {
|
|
|
|
struct cpu_map map;
|
|
|
|
int cpus[1];
|
|
|
|
} empty_cpu_map = {
|
|
|
|
.map.nr = 1,
|
|
|
|
.cpus = { -1, },
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct {
|
|
|
|
struct thread_map map;
|
|
|
|
int threads[1];
|
|
|
|
} empty_thread_map = {
|
|
|
|
.map.nr = 1,
|
|
|
|
.threads = { -1, },
|
|
|
|
};
|
|
|
|
|
2011-01-12 01:42:19 +00:00
|
|
|
int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
struct thread_map *threads)
|
2011-01-03 19:48:12 +00:00
|
|
|
{
|
2011-01-04 13:55:27 +00:00
|
|
|
if (cpus == NULL) {
|
|
|
|
/* Work around old compiler warnings about strict aliasing */
|
|
|
|
cpus = &empty_cpu_map.map;
|
2011-01-03 19:48:12 +00:00
|
|
|
}
|
|
|
|
|
2011-01-04 13:55:27 +00:00
|
|
|
if (threads == NULL)
|
|
|
|
threads = &empty_thread_map.map;
|
2011-01-03 19:48:12 +00:00
|
|
|
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
return __perf_evsel__open(evsel, cpus, threads);
|
2011-01-03 19:48:12 +00:00
|
|
|
}
|
|
|
|
|
2011-01-12 01:42:19 +00:00
|
|
|
int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
struct cpu_map *cpus)
|
2011-01-03 19:48:12 +00:00
|
|
|
{
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
return __perf_evsel__open(evsel, cpus, &empty_thread_map.map);
|
2011-01-04 13:55:27 +00:00
|
|
|
}
|
2011-01-03 19:48:12 +00:00
|
|
|
|
2011-01-12 01:42:19 +00:00
|
|
|
int perf_evsel__open_per_thread(struct perf_evsel *evsel,
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
struct thread_map *threads)
|
2011-01-04 13:55:27 +00:00
|
|
|
{
|
perf tools: Enable grouping logic for parsed events
This patch adds a functionality that allows to create event groups
based on the way they are specified on the command line. Adding
functionality to the '{}' group syntax introduced in earlier patch.
The current '--group/-g' option behaviour remains intact. If you
specify it for record/stat/top command, all the specified events
become members of a single group with the first event as a group
leader.
With the new '{}' group syntax you can create group like:
# perf record -e '{cycles,faults}' ls
resulting in single event group containing 'cycles' and 'faults'
events, with cycles event as group leader.
All groups are created with regards to threads and cpus. Thus
recording an event group within a 2 threads on server with
4 CPUs will create 8 separate groups.
Examples (first event in brackets is group leader):
# 1 group (cpu-clock,task-clock)
perf record --group -e cpu-clock,task-clock ls
perf record -e '{cpu-clock,task-clock}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
# 1 group (cpu-clock,task-clock,minor-faults,major-faults)
perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
# 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
-e instructions ls
# 1 group
# (cpu-clock,task-clock,minor-faults,major-faults,instructions)
perf record --group -e cpu-clock,task-clock \
-e minor-faults,major-faults -e instructions ls perf record -e
'{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
It's possible to use standard event modifier for a group, which spans
over all events in the group and updates each event modifier settings,
for example:
# perf record -r '{faults:k,cache-references}:p'
resulting in ':kp' modifier being used for 'faults' and ':p' modifier
being used for 'cache-references' event.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 10:22:36 +00:00
|
|
|
return __perf_evsel__open(evsel, &empty_cpu_map.map, threads);
|
2011-01-03 19:48:12 +00:00
|
|
|
}
|
2011-01-12 19:03:24 +00:00
|
|
|
|
2012-09-26 15:48:18 +00:00
|
|
|
static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel,
|
|
|
|
const union perf_event *event,
|
|
|
|
struct perf_sample *sample)
|
2011-01-21 15:46:41 +00:00
|
|
|
{
|
2012-09-26 15:48:18 +00:00
|
|
|
u64 type = evsel->attr.sample_type;
|
2011-01-21 15:46:41 +00:00
|
|
|
const u64 *array = event->sample.array;
|
2012-09-26 15:48:18 +00:00
|
|
|
bool swapped = evsel->needs_swap;
|
2012-05-30 12:23:44 +00:00
|
|
|
union u64_swap u;
|
2011-01-21 15:46:41 +00:00
|
|
|
|
|
|
|
array += ((event->header.size -
|
|
|
|
sizeof(event->header)) / sizeof(u64)) - 1;
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_CPU) {
|
2012-05-30 12:23:44 +00:00
|
|
|
u.val64 = *array;
|
|
|
|
if (swapped) {
|
|
|
|
/* undo swap of u64, then swap on individual u32s */
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
}
|
|
|
|
|
|
|
|
sample->cpu = u.val32[0];
|
2011-01-21 15:46:41 +00:00
|
|
|
array--;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_STREAM_ID) {
|
|
|
|
sample->stream_id = *array;
|
|
|
|
array--;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_ID) {
|
|
|
|
sample->id = *array;
|
|
|
|
array--;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_TIME) {
|
|
|
|
sample->time = *array;
|
|
|
|
array--;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_TID) {
|
2012-05-30 12:23:44 +00:00
|
|
|
u.val64 = *array;
|
|
|
|
if (swapped) {
|
|
|
|
/* undo swap of u64, then swap on individual u32s */
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
u.val32[1] = bswap_32(u.val32[1]);
|
|
|
|
}
|
|
|
|
|
|
|
|
sample->pid = u.val32[0];
|
|
|
|
sample->tid = u.val32[1];
|
2011-01-21 15:46:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-21 18:08:15 +00:00
|
|
|
static bool sample_overlap(const union perf_event *event,
|
|
|
|
const void *offset, u64 size)
|
|
|
|
{
|
|
|
|
const void *base = event;
|
|
|
|
|
|
|
|
if (offset + size > base + event->header.size)
|
|
|
|
return true;
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2012-08-02 15:23:46 +00:00
|
|
|
int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
|
2012-09-26 15:48:18 +00:00
|
|
|
struct perf_sample *data)
|
2011-01-21 15:46:41 +00:00
|
|
|
{
|
2012-08-02 15:23:46 +00:00
|
|
|
u64 type = evsel->attr.sample_type;
|
2012-08-07 13:20:45 +00:00
|
|
|
u64 regs_user = evsel->attr.sample_regs_user;
|
2012-09-26 15:48:18 +00:00
|
|
|
bool swapped = evsel->needs_swap;
|
2011-01-21 15:46:41 +00:00
|
|
|
const u64 *array;
|
|
|
|
|
2011-09-06 15:12:26 +00:00
|
|
|
/*
|
|
|
|
* used for cross-endian analysis. See git commit 65014ab3
|
|
|
|
* for why this goofiness is needed.
|
|
|
|
*/
|
2012-05-16 06:59:04 +00:00
|
|
|
union u64_swap u;
|
2011-09-06 15:12:26 +00:00
|
|
|
|
2011-12-15 16:32:39 +00:00
|
|
|
memset(data, 0, sizeof(*data));
|
2011-01-21 15:46:41 +00:00
|
|
|
data->cpu = data->pid = data->tid = -1;
|
|
|
|
data->stream_id = data->id = data->time = -1ULL;
|
2012-02-03 17:01:13 +00:00
|
|
|
data->period = 1;
|
2011-01-21 15:46:41 +00:00
|
|
|
|
|
|
|
if (event->header.type != PERF_RECORD_SAMPLE) {
|
2012-08-02 15:23:46 +00:00
|
|
|
if (!evsel->attr.sample_id_all)
|
2011-01-21 15:46:41 +00:00
|
|
|
return 0;
|
2012-09-26 15:48:18 +00:00
|
|
|
return perf_evsel__parse_id_sample(evsel, event, data);
|
2011-01-21 15:46:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
array = event->sample.array;
|
|
|
|
|
2012-08-02 15:23:46 +00:00
|
|
|
if (evsel->sample_size + sizeof(event->header) > event->header.size)
|
2011-05-21 17:33:04 +00:00
|
|
|
return -EFAULT;
|
|
|
|
|
2011-01-21 15:46:41 +00:00
|
|
|
if (type & PERF_SAMPLE_IP) {
|
|
|
|
data->ip = event->ip.ip;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_TID) {
|
2011-09-06 15:12:26 +00:00
|
|
|
u.val64 = *array;
|
|
|
|
if (swapped) {
|
|
|
|
/* undo swap of u64, then swap on individual u32s */
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
u.val32[1] = bswap_32(u.val32[1]);
|
|
|
|
}
|
|
|
|
|
|
|
|
data->pid = u.val32[0];
|
|
|
|
data->tid = u.val32[1];
|
2011-01-21 15:46:41 +00:00
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_TIME) {
|
|
|
|
data->time = *array;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
2011-05-30 19:08:23 +00:00
|
|
|
data->addr = 0;
|
2011-01-21 15:46:41 +00:00
|
|
|
if (type & PERF_SAMPLE_ADDR) {
|
|
|
|
data->addr = *array;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
data->id = -1ULL;
|
|
|
|
if (type & PERF_SAMPLE_ID) {
|
|
|
|
data->id = *array;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_STREAM_ID) {
|
|
|
|
data->stream_id = *array;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_CPU) {
|
2011-09-06 15:12:26 +00:00
|
|
|
|
|
|
|
u.val64 = *array;
|
|
|
|
if (swapped) {
|
|
|
|
/* undo swap of u64, then swap on individual u32s */
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
}
|
|
|
|
|
|
|
|
data->cpu = u.val32[0];
|
2011-01-21 15:46:41 +00:00
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_PERIOD) {
|
|
|
|
data->period = *array;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_READ) {
|
2012-01-25 14:20:40 +00:00
|
|
|
fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n");
|
2011-01-21 15:46:41 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_CALLCHAIN) {
|
2011-05-21 18:08:15 +00:00
|
|
|
if (sample_overlap(event, array, sizeof(data->callchain->nr)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-01-21 15:46:41 +00:00
|
|
|
data->callchain = (struct ip_callchain *)array;
|
2011-05-21 18:08:15 +00:00
|
|
|
|
|
|
|
if (sample_overlap(event, array, data->callchain->nr))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-01-21 15:46:41 +00:00
|
|
|
array += 1 + data->callchain->nr;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_RAW) {
|
2011-09-29 15:05:08 +00:00
|
|
|
const u64 *pdata;
|
|
|
|
|
2011-09-06 15:12:26 +00:00
|
|
|
u.val64 = *array;
|
|
|
|
if (WARN_ONCE(swapped,
|
|
|
|
"Endianness of raw data not corrected!\n")) {
|
|
|
|
/* undo swap of u64, then swap on individual u32s */
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
u.val32[1] = bswap_32(u.val32[1]);
|
|
|
|
}
|
2011-05-21 18:08:15 +00:00
|
|
|
|
|
|
|
if (sample_overlap(event, array, sizeof(u32)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-09-06 15:12:26 +00:00
|
|
|
data->raw_size = u.val32[0];
|
2011-09-29 15:05:08 +00:00
|
|
|
pdata = (void *) array + sizeof(u32);
|
2011-05-21 18:08:15 +00:00
|
|
|
|
2011-09-29 15:05:08 +00:00
|
|
|
if (sample_overlap(event, pdata, data->raw_size))
|
2011-05-21 18:08:15 +00:00
|
|
|
return -EFAULT;
|
|
|
|
|
2011-09-29 15:05:08 +00:00
|
|
|
data->raw_data = (void *) pdata;
|
2012-03-17 22:23:18 +00:00
|
|
|
|
|
|
|
array = (void *)array + data->raw_size + sizeof(u32);
|
2011-01-21 15:46:41 +00:00
|
|
|
}
|
|
|
|
|
2012-02-09 22:21:01 +00:00
|
|
|
if (type & PERF_SAMPLE_BRANCH_STACK) {
|
|
|
|
u64 sz;
|
|
|
|
|
|
|
|
data->branch_stack = (struct branch_stack *)array;
|
|
|
|
array++; /* nr */
|
|
|
|
|
|
|
|
sz = data->branch_stack->nr * sizeof(struct branch_entry);
|
|
|
|
sz /= sizeof(u64);
|
|
|
|
array += sz;
|
|
|
|
}
|
2012-08-07 13:20:45 +00:00
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_REGS_USER) {
|
|
|
|
/* First u64 tells us if we have any regs in sample. */
|
|
|
|
u64 avail = *array++;
|
|
|
|
|
|
|
|
if (avail) {
|
|
|
|
data->user_regs.regs = (u64 *)array;
|
|
|
|
array += hweight_long(regs_user);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_STACK_USER) {
|
|
|
|
u64 size = *array++;
|
|
|
|
|
|
|
|
data->user_stack.offset = ((char *)(array - 1)
|
|
|
|
- (char *) event);
|
|
|
|
|
|
|
|
if (!size) {
|
|
|
|
data->user_stack.size = 0;
|
|
|
|
} else {
|
|
|
|
data->user_stack.data = (char *)array;
|
|
|
|
array += size / sizeof(*array);
|
|
|
|
data->user_stack.size = *array;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-01-21 15:46:41 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2011-11-28 09:03:31 +00:00
|
|
|
|
|
|
|
int perf_event__synthesize_sample(union perf_event *event, u64 type,
|
|
|
|
const struct perf_sample *sample,
|
|
|
|
bool swapped)
|
|
|
|
{
|
|
|
|
u64 *array;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* used for cross-endian analysis. See git commit 65014ab3
|
|
|
|
* for why this goofiness is needed.
|
|
|
|
*/
|
2012-05-16 06:59:04 +00:00
|
|
|
union u64_swap u;
|
2011-11-28 09:03:31 +00:00
|
|
|
|
|
|
|
array = event->sample.array;
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_IP) {
|
|
|
|
event->ip.ip = sample->ip;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_TID) {
|
|
|
|
u.val32[0] = sample->pid;
|
|
|
|
u.val32[1] = sample->tid;
|
|
|
|
if (swapped) {
|
|
|
|
/*
|
2012-08-02 15:23:46 +00:00
|
|
|
* Inverse of what is done in perf_evsel__parse_sample
|
2011-11-28 09:03:31 +00:00
|
|
|
*/
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
u.val32[1] = bswap_32(u.val32[1]);
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
}
|
|
|
|
|
|
|
|
*array = u.val64;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_TIME) {
|
|
|
|
*array = sample->time;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_ADDR) {
|
|
|
|
*array = sample->addr;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_ID) {
|
|
|
|
*array = sample->id;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_STREAM_ID) {
|
|
|
|
*array = sample->stream_id;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_CPU) {
|
|
|
|
u.val32[0] = sample->cpu;
|
|
|
|
if (swapped) {
|
|
|
|
/*
|
2012-08-02 15:23:46 +00:00
|
|
|
* Inverse of what is done in perf_evsel__parse_sample
|
2011-11-28 09:03:31 +00:00
|
|
|
*/
|
|
|
|
u.val32[0] = bswap_32(u.val32[0]);
|
|
|
|
u.val64 = bswap_64(u.val64);
|
|
|
|
}
|
|
|
|
*array = u.val64;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type & PERF_SAMPLE_PERIOD) {
|
|
|
|
*array = sample->period;
|
|
|
|
array++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2012-09-11 22:24:23 +00:00
|
|
|
|
2012-09-18 14:21:50 +00:00
|
|
|
struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name)
|
|
|
|
{
|
|
|
|
return pevent_find_field(evsel->tp_format, name);
|
|
|
|
}
|
|
|
|
|
2012-09-26 23:22:00 +00:00
|
|
|
void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
|
2012-09-11 22:24:23 +00:00
|
|
|
const char *name)
|
|
|
|
{
|
2012-09-18 14:21:50 +00:00
|
|
|
struct format_field *field = perf_evsel__field(evsel, name);
|
2012-09-11 22:24:23 +00:00
|
|
|
int offset;
|
|
|
|
|
2012-09-18 14:21:50 +00:00
|
|
|
if (!field)
|
|
|
|
return NULL;
|
2012-09-11 22:24:23 +00:00
|
|
|
|
|
|
|
offset = field->offset;
|
|
|
|
|
|
|
|
if (field->flags & FIELD_IS_DYNAMIC) {
|
|
|
|
offset = *(int *)(sample->raw_data + field->offset);
|
|
|
|
offset &= 0xffff;
|
|
|
|
}
|
|
|
|
|
|
|
|
return sample->raw_data + offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
|
|
|
|
const char *name)
|
|
|
|
{
|
2012-09-18 14:21:50 +00:00
|
|
|
struct format_field *field = perf_evsel__field(evsel, name);
|
2012-09-26 16:13:04 +00:00
|
|
|
void *ptr;
|
|
|
|
u64 value;
|
2012-09-11 22:24:23 +00:00
|
|
|
|
2012-09-18 14:21:50 +00:00
|
|
|
if (!field)
|
|
|
|
return 0;
|
2012-09-11 22:24:23 +00:00
|
|
|
|
2012-09-26 16:13:04 +00:00
|
|
|
ptr = sample->raw_data + field->offset;
|
2012-09-11 22:24:23 +00:00
|
|
|
|
2012-09-26 16:13:04 +00:00
|
|
|
switch (field->size) {
|
|
|
|
case 1:
|
|
|
|
return *(u8 *)ptr;
|
|
|
|
case 2:
|
|
|
|
value = *(u16 *)ptr;
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
value = *(u32 *)ptr;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
value = *(u64 *)ptr;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!evsel->needs_swap)
|
|
|
|
return value;
|
|
|
|
|
|
|
|
switch (field->size) {
|
|
|
|
case 2:
|
|
|
|
return bswap_16(value);
|
|
|
|
case 4:
|
|
|
|
return bswap_32(value);
|
|
|
|
case 8:
|
|
|
|
return bswap_64(value);
|
|
|
|
default:
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2012-09-11 22:24:23 +00:00
|
|
|
}
|
2012-12-10 21:17:08 +00:00
|
|
|
|
|
|
|
static int comma_fprintf(FILE *fp, bool *first, const char *fmt, ...)
|
|
|
|
{
|
|
|
|
va_list args;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (!*first) {
|
|
|
|
ret += fprintf(fp, ",");
|
|
|
|
} else {
|
|
|
|
ret += fprintf(fp, ":");
|
|
|
|
*first = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
va_start(args, fmt);
|
|
|
|
ret += vfprintf(fp, fmt, args);
|
|
|
|
va_end(args);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __if_fprintf(FILE *fp, bool *first, const char *field, u64 value)
|
|
|
|
{
|
|
|
|
if (value == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
return comma_fprintf(fp, first, " %s: %" PRIu64, field, value);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define if_print(field) printed += __if_fprintf(fp, &first, #field, evsel->attr.field)
|
|
|
|
|
perf evsel: Decode read_format and sample_type in perf_evsel__fprintf
Before those fields showed just a number, now it decodes each bit:
[root@sandy linux]# perf evlist -v
cycles: sample_freq=4000, size: 96, sample_type: IP|TID|TIME|CPU|PERIOD, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING|ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-64ezdtiijolgti08ae3phxyj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-12-11 13:54:12 +00:00
|
|
|
struct bit_names {
|
|
|
|
int bit;
|
|
|
|
const char *name;
|
|
|
|
};
|
|
|
|
|
|
|
|
static int bits__fprintf(FILE *fp, const char *field, u64 value,
|
|
|
|
struct bit_names *bits, bool *first)
|
|
|
|
{
|
|
|
|
int i = 0, printed = comma_fprintf(fp, first, " %s: ", field);
|
|
|
|
bool first_bit = true;
|
|
|
|
|
|
|
|
do {
|
|
|
|
if (value & bits[i].bit) {
|
|
|
|
printed += fprintf(fp, "%s%s", first_bit ? "" : "|", bits[i].name);
|
|
|
|
first_bit = false;
|
|
|
|
}
|
|
|
|
} while (bits[++i].name != NULL);
|
|
|
|
|
|
|
|
return printed;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sample_type__fprintf(FILE *fp, bool *first, u64 value)
|
|
|
|
{
|
|
|
|
#define bit_name(n) { PERF_SAMPLE_##n, #n }
|
|
|
|
struct bit_names bits[] = {
|
|
|
|
bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
|
|
|
|
bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
|
|
|
|
bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
|
|
|
|
bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
|
|
|
|
{ .name = NULL, }
|
|
|
|
};
|
|
|
|
#undef bit_name
|
|
|
|
return bits__fprintf(fp, "sample_type", value, bits, first);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int read_format__fprintf(FILE *fp, bool *first, u64 value)
|
|
|
|
{
|
|
|
|
#define bit_name(n) { PERF_FORMAT_##n, #n }
|
|
|
|
struct bit_names bits[] = {
|
|
|
|
bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
|
|
|
|
bit_name(ID), bit_name(GROUP),
|
|
|
|
{ .name = NULL, }
|
|
|
|
};
|
|
|
|
#undef bit_name
|
|
|
|
return bits__fprintf(fp, "read_format", value, bits, first);
|
|
|
|
}
|
|
|
|
|
2012-12-10 21:17:08 +00:00
|
|
|
int perf_evsel__fprintf(struct perf_evsel *evsel,
|
|
|
|
struct perf_attr_details *details, FILE *fp)
|
|
|
|
{
|
|
|
|
bool first = true;
|
2013-01-22 09:09:47 +00:00
|
|
|
int printed = 0;
|
|
|
|
|
2013-02-06 20:20:02 +00:00
|
|
|
if (details->event_group) {
|
2013-01-22 09:09:47 +00:00
|
|
|
struct perf_evsel *pos;
|
|
|
|
|
|
|
|
if (!perf_evsel__is_group_leader(evsel))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (evsel->nr_members > 1)
|
|
|
|
printed += fprintf(fp, "%s{", evsel->group_name ?: "");
|
|
|
|
|
|
|
|
printed += fprintf(fp, "%s", perf_evsel__name(evsel));
|
|
|
|
for_each_group_member(pos, evsel)
|
|
|
|
printed += fprintf(fp, ",%s", perf_evsel__name(pos));
|
|
|
|
|
|
|
|
if (evsel->nr_members > 1)
|
|
|
|
printed += fprintf(fp, "}");
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
printed += fprintf(fp, "%s", perf_evsel__name(evsel));
|
2012-12-10 21:17:08 +00:00
|
|
|
|
|
|
|
if (details->verbose || details->freq) {
|
|
|
|
printed += comma_fprintf(fp, &first, " sample_freq=%" PRIu64,
|
|
|
|
(u64)evsel->attr.sample_freq);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (details->verbose) {
|
|
|
|
if_print(type);
|
|
|
|
if_print(config);
|
|
|
|
if_print(config1);
|
|
|
|
if_print(config2);
|
|
|
|
if_print(size);
|
perf evsel: Decode read_format and sample_type in perf_evsel__fprintf
Before those fields showed just a number, now it decodes each bit:
[root@sandy linux]# perf evlist -v
cycles: sample_freq=4000, size: 96, sample_type: IP|TID|TIME|CPU|PERIOD, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING|ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-64ezdtiijolgti08ae3phxyj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-12-11 13:54:12 +00:00
|
|
|
printed += sample_type__fprintf(fp, &first, evsel->attr.sample_type);
|
|
|
|
if (evsel->attr.read_format)
|
|
|
|
printed += read_format__fprintf(fp, &first, evsel->attr.read_format);
|
2012-12-10 21:17:08 +00:00
|
|
|
if_print(disabled);
|
|
|
|
if_print(inherit);
|
|
|
|
if_print(pinned);
|
|
|
|
if_print(exclusive);
|
|
|
|
if_print(exclude_user);
|
|
|
|
if_print(exclude_kernel);
|
|
|
|
if_print(exclude_hv);
|
|
|
|
if_print(exclude_idle);
|
|
|
|
if_print(mmap);
|
|
|
|
if_print(comm);
|
|
|
|
if_print(freq);
|
|
|
|
if_print(inherit_stat);
|
|
|
|
if_print(enable_on_exec);
|
|
|
|
if_print(task);
|
|
|
|
if_print(watermark);
|
|
|
|
if_print(precise_ip);
|
|
|
|
if_print(mmap_data);
|
|
|
|
if_print(sample_id_all);
|
|
|
|
if_print(exclude_host);
|
|
|
|
if_print(exclude_guest);
|
|
|
|
if_print(__reserved_1);
|
|
|
|
if_print(wakeup_events);
|
|
|
|
if_print(bp_type);
|
|
|
|
if_print(branch_sample_type);
|
|
|
|
}
|
2013-01-22 09:09:47 +00:00
|
|
|
out:
|
2012-12-10 21:17:08 +00:00
|
|
|
fputc('\n', fp);
|
|
|
|
return ++printed;
|
|
|
|
}
|
2012-12-13 17:16:30 +00:00
|
|
|
|
|
|
|
bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
|
|
|
|
char *msg, size_t msgsize)
|
|
|
|
{
|
|
|
|
if ((err == ENOENT || err == ENXIO) &&
|
|
|
|
evsel->attr.type == PERF_TYPE_HARDWARE &&
|
|
|
|
evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) {
|
|
|
|
/*
|
|
|
|
* If it's cycles then fall back to hrtimer based
|
|
|
|
* cpu-clock-tick sw counter, which is always available even if
|
|
|
|
* no PMU support.
|
|
|
|
*
|
|
|
|
* PPC returns ENXIO until 2.6.37 (behavior changed with commit
|
|
|
|
* b0a873e).
|
|
|
|
*/
|
|
|
|
scnprintf(msg, msgsize, "%s",
|
|
|
|
"The cycles event is not supported, trying to fall back to cpu-clock-ticks");
|
|
|
|
|
|
|
|
evsel->attr.type = PERF_TYPE_SOFTWARE;
|
|
|
|
evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK;
|
|
|
|
|
|
|
|
free(evsel->name);
|
|
|
|
evsel->name = NULL;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
2012-12-13 18:10:58 +00:00
|
|
|
|
|
|
|
int perf_evsel__open_strerror(struct perf_evsel *evsel,
|
|
|
|
struct perf_target *target,
|
|
|
|
int err, char *msg, size_t size)
|
|
|
|
{
|
|
|
|
switch (err) {
|
|
|
|
case EPERM:
|
|
|
|
case EACCES:
|
|
|
|
return scnprintf(msg, size, "%s",
|
|
|
|
"You may not have permission to collect %sstats.\n"
|
|
|
|
"Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
|
|
|
|
" -1 - Not paranoid at all\n"
|
|
|
|
" 0 - Disallow raw tracepoint access for unpriv\n"
|
|
|
|
" 1 - Disallow cpu events for unpriv\n"
|
|
|
|
" 2 - Disallow kernel profiling for unpriv",
|
|
|
|
target->system_wide ? "system-wide " : "");
|
|
|
|
case ENOENT:
|
|
|
|
return scnprintf(msg, size, "The %s event is not supported.",
|
|
|
|
perf_evsel__name(evsel));
|
|
|
|
case EMFILE:
|
|
|
|
return scnprintf(msg, size, "%s",
|
|
|
|
"Too many events are opened.\n"
|
|
|
|
"Try again after reducing the number of events.");
|
|
|
|
case ENODEV:
|
|
|
|
if (target->cpu_list)
|
|
|
|
return scnprintf(msg, size, "%s",
|
|
|
|
"No such device - did you specify an out-of-range profile CPU?\n");
|
|
|
|
break;
|
|
|
|
case EOPNOTSUPP:
|
|
|
|
if (evsel->attr.precise_ip)
|
|
|
|
return scnprintf(msg, size, "%s",
|
|
|
|
"\'precise\' request may not be supported. Try removing 'p' modifier.");
|
|
|
|
#if defined(__i386__) || defined(__x86_64__)
|
|
|
|
if (evsel->attr.type == PERF_TYPE_HARDWARE)
|
|
|
|
return scnprintf(msg, size, "%s",
|
|
|
|
"No hardware sampling interrupt available.\n"
|
|
|
|
"No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it.");
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return scnprintf(msg, size,
|
|
|
|
"The sys_perf_event_open() syscall returned with %d (%s) for event (%s). \n"
|
|
|
|
"/bin/dmesg may provide additional information.\n"
|
|
|
|
"No CONFIG_PERF_EVENTS=y kernel support configured?\n",
|
|
|
|
err, strerror(err), perf_evsel__name(evsel));
|
|
|
|
}
|