#include <byteswap.h>
#include <linux/bitops.h>
#include "asm/bug.h"
+#include "debugfs.h"
+#include "event-parse.h"
#include "evsel.h"
#include "evlist.h"
#include "util.h"
return evsel;
}
-static const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = {
+struct event_format *event_format__new(const char *sys, const char *name)
+{
+ int fd, n;
+ char *filename;
+ void *bf = NULL, *nbf;
+ size_t size = 0, alloc_size = 0;
+ struct event_format *format = NULL;
+
+ if (asprintf(&filename, "%s/%s/%s/format", tracing_events_path, sys, name) < 0)
+ goto out;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ goto out_free_filename;
+
+ do {
+ if (size == alloc_size) {
+ alloc_size += BUFSIZ;
+ nbf = realloc(bf, alloc_size);
+ if (nbf == NULL)
+ goto out_free_bf;
+ bf = nbf;
+ }
+
+ n = read(fd, bf + size, BUFSIZ);
+ if (n < 0)
+ goto out_free_bf;
+ size += n;
+ } while (n > 0);
+
+ pevent_parse_format(&format, bf, size, sys);
+
+out_free_bf:
+ free(bf);
+ close(fd);
+out_free_filename:
+ free(filename);
+out:
+ return format;
+}
+
+struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx)
+{
+ struct perf_evsel *evsel = zalloc(sizeof(*evsel));
+
+ if (evsel != NULL) {
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_TRACEPOINT,
+ .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
+ PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD),
+ };
+
+ if (asprintf(&evsel->name, "%s:%s", sys, name) < 0)
+ goto out_free;
+
+ evsel->tp_format = event_format__new(sys, name);
+ if (evsel->tp_format == NULL)
+ goto out_free;
+
+ event_attr_init(&attr);
+ attr.config = evsel->tp_format->id;
+ attr.sample_period = 1;
+ perf_evsel__init(evsel, &attr, idx);
+ }
+
+ return evsel;
+
+out_free:
+ free(evsel->name);
+ free(evsel);
+ return NULL;
+}
+
+const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = {
"cycles",
"instructions",
"cache-references",
return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
}
-static const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = {
+const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = {
"cpu-clock",
"task-clock",
"page-faults",
"context-switches",
- "CPU-migrations",
+ "cpu-migrations",
"minor-faults",
"major-faults",
"alignment-faults",
return evsel->fd != NULL ? 0 : -ENOMEM;
}
+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;
+}
+
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
{
evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
perf_evsel__exit(evsel);
close_cgroup(evsel->cgrp);
free(evsel->group_name);
+ if (evsel->tp_format)
+ pevent_free_format(evsel->tp_format);
free(evsel->name);
free(evsel);
}
return __perf_evsel__open(evsel, &empty_cpu_map.map, threads);
}
-static int perf_event__parse_id_sample(const union perf_event *event, u64 type,
- struct perf_sample *sample,
- bool swapped)
+static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel,
+ const union perf_event *event,
+ struct perf_sample *sample)
{
+ u64 type = evsel->attr.sample_type;
const u64 *array = event->sample.array;
+ bool swapped = evsel->needs_swap;
union u64_swap u;
array += ((event->header.size -
}
int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
- struct perf_sample *data, bool swapped)
+ struct perf_sample *data)
{
u64 type = evsel->attr.sample_type;
u64 regs_user = evsel->attr.sample_regs_user;
+ bool swapped = evsel->needs_swap;
const u64 *array;
/*
if (event->header.type != PERF_RECORD_SAMPLE) {
if (!evsel->attr.sample_id_all)
return 0;
- return perf_event__parse_id_sample(event, type, data, swapped);
+ return perf_evsel__parse_id_sample(evsel, event, data);
}
array = event->sample.array;
return 0;
}
+
+struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name)
+{
+ return pevent_find_field(evsel->tp_format, name);
+}
+
+void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
+ const char *name)
+{
+ struct format_field *field = perf_evsel__field(evsel, name);
+ int offset;
+
+ if (!field)
+ return NULL;
+
+ 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)
+{
+ struct format_field *field = perf_evsel__field(evsel, name);
+ void *ptr;
+ u64 value;
+
+ if (!field)
+ return 0;
+
+ ptr = sample->raw_data + field->offset;
+
+ 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;
+}
projects / platform / kernel / linux-rpi.git / blobdiff