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Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r--tools/perf/util/evlist.c70
1 files changed, 43 insertions, 27 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index b62e523a7035..ac35cd214feb 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -25,6 +25,7 @@
#include "parse-events.h"
#include <subcmd/parse-options.h>
+#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
@@ -125,7 +126,7 @@ static void perf_evlist__purge(struct perf_evlist *evlist)
void perf_evlist__exit(struct perf_evlist *evlist)
{
zfree(&evlist->mmap);
- zfree(&evlist->backward_mmap);
+ zfree(&evlist->overwrite_mmap);
fdarray__exit(&evlist->pollfd);
}
@@ -675,11 +676,11 @@ static int perf_evlist__set_paused(struct perf_evlist *evlist, bool value)
{
int i;
- if (!evlist->backward_mmap)
+ if (!evlist->overwrite_mmap)
return 0;
for (i = 0; i < evlist->nr_mmaps; i++) {
- int fd = evlist->backward_mmap[i].fd;
+ int fd = evlist->overwrite_mmap[i].fd;
int err;
if (fd < 0)
@@ -711,7 +712,7 @@ union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, int
* No need for read-write ring buffer: kernel stop outputting when
* it hit md->prev (perf_mmap__consume()).
*/
- return perf_mmap__read_forward(md, evlist->overwrite);
+ return perf_mmap__read_forward(md);
}
union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist, int idx)
@@ -738,7 +739,7 @@ void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx)
void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx)
{
- perf_mmap__consume(&evlist->mmap[idx], evlist->overwrite);
+ perf_mmap__consume(&evlist->mmap[idx], false);
}
static void perf_evlist__munmap_nofree(struct perf_evlist *evlist)
@@ -749,16 +750,16 @@ static void perf_evlist__munmap_nofree(struct perf_evlist *evlist)
for (i = 0; i < evlist->nr_mmaps; i++)
perf_mmap__munmap(&evlist->mmap[i]);
- if (evlist->backward_mmap)
+ if (evlist->overwrite_mmap)
for (i = 0; i < evlist->nr_mmaps; i++)
- perf_mmap__munmap(&evlist->backward_mmap[i]);
+ perf_mmap__munmap(&evlist->overwrite_mmap[i]);
}
void perf_evlist__munmap(struct perf_evlist *evlist)
{
perf_evlist__munmap_nofree(evlist);
zfree(&evlist->mmap);
- zfree(&evlist->backward_mmap);
+ zfree(&evlist->overwrite_mmap);
}
static struct perf_mmap *perf_evlist__alloc_mmap(struct perf_evlist *evlist)
@@ -800,7 +801,7 @@ perf_evlist__should_poll(struct perf_evlist *evlist __maybe_unused,
static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx,
struct mmap_params *mp, int cpu_idx,
- int thread, int *_output, int *_output_backward)
+ int thread, int *_output, int *_output_overwrite)
{
struct perf_evsel *evsel;
int revent;
@@ -812,18 +813,20 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx,
int fd;
int cpu;
+ mp->prot = PROT_READ | PROT_WRITE;
if (evsel->attr.write_backward) {
- output = _output_backward;
- maps = evlist->backward_mmap;
+ output = _output_overwrite;
+ maps = evlist->overwrite_mmap;
if (!maps) {
maps = perf_evlist__alloc_mmap(evlist);
if (!maps)
return -1;
- evlist->backward_mmap = maps;
+ evlist->overwrite_mmap = maps;
if (evlist->bkw_mmap_state == BKW_MMAP_NOTREADY)
perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING);
}
+ mp->prot &= ~PROT_WRITE;
}
if (evsel->system_wide && thread)
@@ -884,14 +887,14 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist,
pr_debug2("perf event ring buffer mmapped per cpu\n");
for (cpu = 0; cpu < nr_cpus; cpu++) {
int output = -1;
- int output_backward = -1;
+ int output_overwrite = -1;
auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, cpu,
true);
for (thread = 0; thread < nr_threads; thread++) {
if (perf_evlist__mmap_per_evsel(evlist, cpu, mp, cpu,
- thread, &output, &output_backward))
+ thread, &output, &output_overwrite))
goto out_unmap;
}
}
@@ -912,13 +915,13 @@ static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist,
pr_debug2("perf event ring buffer mmapped per thread\n");
for (thread = 0; thread < nr_threads; thread++) {
int output = -1;
- int output_backward = -1;
+ int output_overwrite = -1;
auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, thread,
false);
if (perf_evlist__mmap_per_evsel(evlist, thread, mp, 0, thread,
- &output, &output_backward))
+ &output, &output_overwrite))
goto out_unmap;
}
@@ -1052,15 +1055,18 @@ int perf_evlist__parse_mmap_pages(const struct option *opt, const char *str,
* Return: %0 on success, negative error code otherwise.
*/
int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
- bool overwrite, unsigned int auxtrace_pages,
+ unsigned int auxtrace_pages,
bool auxtrace_overwrite)
{
struct perf_evsel *evsel;
const struct cpu_map *cpus = evlist->cpus;
const struct thread_map *threads = evlist->threads;
- struct mmap_params mp = {
- .prot = PROT_READ | (overwrite ? 0 : PROT_WRITE),
- };
+ /*
+ * Delay setting mp.prot: set it before calling perf_mmap__mmap.
+ * Its value is decided by evsel's write_backward.
+ * So &mp should not be passed through const pointer.
+ */
+ struct mmap_params mp;
if (!evlist->mmap)
evlist->mmap = perf_evlist__alloc_mmap(evlist);
@@ -1070,7 +1076,6 @@ int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
if (evlist->pollfd.entries == NULL && perf_evlist__alloc_pollfd(evlist) < 0)
return -ENOMEM;
- evlist->overwrite = overwrite;
evlist->mmap_len = perf_evlist__mmap_size(pages);
pr_debug("mmap size %zuB\n", evlist->mmap_len);
mp.mask = evlist->mmap_len - page_size - 1;
@@ -1091,10 +1096,9 @@ int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
return perf_evlist__mmap_per_cpu(evlist, &mp);
}
-int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
- bool overwrite)
+int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages)
{
- return perf_evlist__mmap_ex(evlist, pages, overwrite, 0, false);
+ return perf_evlist__mmap_ex(evlist, pages, 0, false);
}
int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
@@ -1102,7 +1106,8 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
struct cpu_map *cpus;
struct thread_map *threads;
- threads = thread_map__new_str(target->pid, target->tid, target->uid);
+ threads = thread_map__new_str(target->pid, target->tid, target->uid,
+ target->per_thread);
if (!threads)
return -1;
@@ -1582,6 +1587,17 @@ int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *even
return perf_evsel__parse_sample(evsel, event, sample);
}
+int perf_evlist__parse_sample_timestamp(struct perf_evlist *evlist,
+ union perf_event *event,
+ u64 *timestamp)
+{
+ struct perf_evsel *evsel = perf_evlist__event2evsel(evlist, event);
+
+ if (!evsel)
+ return -EFAULT;
+ return perf_evsel__parse_sample_timestamp(evsel, event, timestamp);
+}
+
size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp)
{
struct perf_evsel *evsel;
@@ -1739,13 +1755,13 @@ void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist,
RESUME,
} action = NONE;
- if (!evlist->backward_mmap)
+ if (!evlist->overwrite_mmap)
return;
switch (old_state) {
case BKW_MMAP_NOTREADY: {
if (state != BKW_MMAP_RUNNING)
- goto state_err;;
+ goto state_err;
break;
}
case BKW_MMAP_RUNNING: {
generated by cgit (git 2.34.1) at 2024-05-05 06:48:28 +0000