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perf tools: Add 'struct perf_mmap' arg to record__write() 

The struct perf_mmap map argument will hold the file pointer to write
the data to.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180913125450.21342-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2018-09-13 14:54:06 +02:00 committed by Arnaldo Carvalho de Melo
parent e035f4ca2a
commit ded2b8fe2e
5 changed files with 20 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
tools/perf/builtin-record.c
View File

@ -106,9 +106,12 @@ static bool switch_output_time(struct record *rec)
trigger_is_ready(&switch_output_trigger);
}
static int record__write(struct record *rec, void *bf, size_t size)
static int record__write(struct record *rec, struct perf_mmap *map __maybe_unused,
void *bf, size_t size)
{
if (perf_data__write(rec->session->data, bf, size) < 0) {
struct perf_data_file *file = &rec->session->data->file;
if (perf_data_file__write(file, bf, size) < 0) {
pr_err("failed to write perf data, error: %m\n");
return -1;
}
@ -127,15 +130,15 @@ static int process_synthesized_event(struct perf_tool *tool,
struct machine *machine __maybe_unused)
{
struct record *rec = container_of(tool, struct record, tool);
return record__write(rec, event, event->header.size);
return record__write(rec, NULL, event, event->header.size);
}
static int record__pushfn(void *to, void *bf, size_t size)
static int record__pushfn(struct perf_mmap *map, void *to, void *bf, size_t size)
{
struct record *rec = to;
rec->samples++;
return record__write(rec, bf, size);
return record__write(rec, map, bf, size);
}
static volatile int done;
@ -170,6 +173,7 @@ static void record__sig_exit(void)
#ifdef HAVE_AUXTRACE_SUPPORT
static int record__process_auxtrace(struct perf_tool *tool,
struct perf_mmap *map,
union perf_event *event, void *data1,
size_t len1, void *data2, size_t len2)
{
@ -197,11 +201,11 @@ static int record__process_auxtrace(struct perf_tool *tool,
if (padding)
padding = 8 - padding;
record__write(rec, event, event->header.size);
record__write(rec, data1, len1);
record__write(rec, map, event, event->header.size);
record__write(rec, map, data1, len1);
if (len2)
record__write(rec, data2, len2);
record__write(rec, &pad, padding);
record__write(rec, map, data2, len2);
record__write(rec, map, &pad, padding);
return 0;
}
@ -549,7 +553,7 @@ static int record__mmap_read_evlist(struct record *rec, struct perf_evlist *evli
* at least one event.
*/
if (bytes_written != rec->bytes_written)
rc = record__write(rec, &finished_round_event, sizeof(finished_round_event));
rc = record__write(rec, NULL, &finished_round_event, sizeof(finished_round_event));
if (overwrite)
perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY);

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

@ -1285,7 +1285,7 @@ static int __auxtrace_mmap__read(struct perf_mmap *map,
ev.auxtrace.tid = mm->tid;
ev.auxtrace.cpu = mm->cpu;
if (fn(tool, &ev, data1, len1, data2, len2))
if (fn(tool, map, &ev, data1, len1, data2, len2))
return -1;
mm->prev = head;

1
tools/perf/util/auxtrace.h
View File

@ -435,6 +435,7 @@ void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
bool per_cpu);
typedef int (*process_auxtrace_t)(struct perf_tool *tool,
struct perf_mmap *map,
union perf_event *event, void *data1,
size_t len1, void *data2, size_t len2);

6
tools/perf/util/mmap.c
View File

@ -281,7 +281,7 @@ int perf_mmap__read_init(struct perf_mmap *map)
}
int perf_mmap__push(struct perf_mmap *md, void *to,
int push(void *to, void *buf, size_t size))
int push(struct perf_mmap *map, void *to, void *buf, size_t size))
{
u64 head = perf_mmap__read_head(md);
unsigned char *data = md->base + page_size;
@ -300,7 +300,7 @@ int perf_mmap__push(struct perf_mmap *md, void *to,
size = md->mask + 1 - (md->start & md->mask);
md->start += size;
if (push(to, buf, size) < 0) {
if (push(md, to, buf, size) < 0) {
rc = -1;
goto out;
}
@ -310,7 +310,7 @@ int perf_mmap__push(struct perf_mmap *md, void *to,
size = md->end - md->start;
md->start += size;
if (push(to, buf, size) < 0) {
if (push(md, to, buf, size) < 0) {
rc = -1;
goto out;
}

2
tools/perf/util/mmap.h
View File

@ -93,7 +93,7 @@ union perf_event *perf_mmap__read_forward(struct perf_mmap *map);
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));
int push(struct perf_mmap *map, void *to, void *buf, size_t size));
size_t perf_mmap__mmap_len(struct perf_mmap *map);