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perf mmap: Simplify perf_mmap__read_event() 

It isn't necessary to pass the 'overwrite', 'start' and 'end' argument
to perf_mmap__read_event().  Discard them.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1520350567-80082-7-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kan Liang 2018-03-06 10:36:06 -05:00 committed by Arnaldo Carvalho de Melo
parent d6ace3df43
commit 0019dc87b9
17 changed files with 17 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/arch/x86/tests/perf-time-to-tsc.c
View File

@ -115,7 +115,7 @@ int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
struct perf_sample sample;
if (event->header.type != PERF_RECORD_COMM ||

2
tools/perf/builtin-kvm.c
View File

@ -757,7 +757,7 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
if (err < 0)
return (err == -EAGAIN) ? 0 : -1;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
err = perf_evlist__parse_sample_timestamp(evlist, event, &timestamp);
if (err) {
perf_mmap__consume(md);

2
tools/perf/builtin-top.c
View File

@ -824,7 +824,7 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
if (perf_mmap__read_init(md, opts->overwrite, &start, &end) < 0)
return;
while ((event = perf_mmap__read_event(md, opts->overwrite, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
ret = perf_evlist__parse_sample(evlist, event, &sample);
if (ret) {
pr_err("Can't parse sample, err = %d\n", ret);

2
tools/perf/builtin-trace.c
View File

@ -2509,7 +2509,7 @@ again:
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
struct perf_sample sample;
++trace->nr_events;

2
tools/perf/tests/backward-ring-buffer.c
View File

@ -36,7 +36,7 @@ static int count_samples(struct perf_evlist *evlist, int *sample_count,
u64 start, end;
perf_mmap__read_init(map, true, &start, &end);
while ((event = perf_mmap__read_event(map, true, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(map)) != NULL) {
const u32 type = event->header.type;
switch (type) {

2
tools/perf/tests/bpf.c
View File

@ -183,7 +183,7 @@ static int do_test(struct bpf_object *obj, int (*func)(void),
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
const u32 type = event->header.type;
if (type == PERF_RECORD_SAMPLE)

2
tools/perf/tests/code-reading.c
View File

@ -418,7 +418,7 @@ static int process_events(struct machine *machine, struct perf_evlist *evlist,
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
ret = process_event(machine, evlist, event, state);
perf_mmap__consume(md);
if (ret < 0)

2
tools/perf/tests/keep-tracking.c
View File

@ -36,7 +36,7 @@ static int find_comm(struct perf_evlist *evlist, const char *comm)
md = &evlist->mmap[i];
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
if (event->header.type == PERF_RECORD_COMM &&
(pid_t)event->comm.pid == getpid() &&
(pid_t)event->comm.tid == getpid() &&

2
tools/perf/tests/mmap-basic.c
View File

@ -112,7 +112,7 @@ int test__basic_mmap(struct test *test __maybe_unused, int subtest __maybe_unuse
if (perf_mmap__read_init(md, false, &start, &end) < 0)
goto out_init;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
struct perf_sample sample;
if (event->header.type != PERF_RECORD_SAMPLE) {

2
tools/perf/tests/openat-syscall-tp-fields.c
View File

@ -93,7 +93,7 @@ int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
const u32 type = event->header.type;
int tp_flags;
struct perf_sample sample;

2
tools/perf/tests/perf-record.c
View File

@ -171,7 +171,7 @@ int test__PERF_RECORD(struct test *test __maybe_unused, int subtest __maybe_unus
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
const u32 type = event->header.type;
const char *name = perf_event__name(type);

2
tools/perf/tests/sw-clock.c
View File

@ -99,7 +99,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
if (perf_mmap__read_init(md, false, &start, &end) < 0)
goto out_init;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
struct perf_sample sample;
if (event->header.type != PERF_RECORD_SAMPLE)

2
tools/perf/tests/switch-tracking.c
View File

@ -267,7 +267,7 @@ static int process_events(struct perf_evlist *evlist,
if (perf_mmap__read_init(md, false, &start, &end) < 0)
continue;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
cnt += 1;
ret = add_event(evlist, &events, event);
perf_mmap__consume(md);

2
tools/perf/tests/task-exit.c
View File

@ -116,7 +116,7 @@ retry:
if (perf_mmap__read_init(md, false, &start, &end) < 0)
goto out_init;
while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
while ((event = perf_mmap__read_event(md)) != NULL) {
if (event->header.type == PERF_RECORD_EXIT)
nr_exit++;

5
tools/perf/util/mmap.c
View File

@ -75,10 +75,7 @@ static union perf_event *perf_mmap__read(struct perf_mmap *map,
* }
* perf_mmap__read_done()
*/
union perf_event *perf_mmap__read_event(struct perf_mmap *map,
bool overwrite __maybe_unused,
u64 *startp __maybe_unused,
u64 end __maybe_unused)
union perf_event *perf_mmap__read_event(struct perf_mmap *map)
{
union perf_event *event;

4
tools/perf/util/mmap.h
View File

@ -89,9 +89,7 @@ static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail)
union perf_event *perf_mmap__read_forward(struct perf_mmap *map);
union perf_event *perf_mmap__read_event(struct perf_mmap *map,
bool overwrite,
u64 *startp, u64 end);
union perf_event *perf_mmap__read_event(struct perf_mmap *map);
int perf_mmap__push(struct perf_mmap *md, void *to,
int push(void *to, void *buf, size_t size));

2
tools/perf/util/python.c
View File

@ -995,7 +995,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
if (perf_mmap__read_init(md, false, &start, &end) < 0)
goto end;
event = perf_mmap__read_event(md, false, &start, end);
event = perf_mmap__read_event(md);
if (event != NULL) {
PyObject *pyevent = pyrf_event__new(event);
struct pyrf_event *pevent = (struct pyrf_event *)pyevent;