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authorWang Nan <wangnan0@huawei.com>2016-06-27 13:24:04 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-06-28 16:54:53 +0300
commitcb21686b7d37776cfd34793f08d6466ce9091a7d (patch)
tree3ce5cce91237d568936cab5403bd0d51b1f925af /tools
parentcda57a8c74aa326cbb1a1e2f7d30f8c76983e70c (diff)
downloadlinux-cb21686b7d37776cfd34793f08d6466ce9091a7d.tar.xz
perf record: Prepare reading from multiple evlists in record__mmap_read_all()
Following commits introduce new evlists to record. This patch adjusts record__mmap_read_all() and record__mmap_read(): converting original record__mmap_read_all() to record__mmap_read_evlist(), read from one evlist; makes record__mmap_read() reading from specific evlist. record__mmap_read_all() will be improved to read from multiple evlists. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1467023052-146749-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-record.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7eb8d7d29fbc..18e9abc90759 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -132,9 +132,9 @@ rb_find_range(struct perf_evlist *evlist,
return backward_rb_find_range(data, mask, head, start, end);
}
-static int record__mmap_read(struct record *rec, int idx)
+static int record__mmap_read(struct record *rec, struct perf_evlist *evlist, int idx)
{
- struct perf_mmap *md = &rec->evlist->mmap[idx];
+ struct perf_mmap *md = &evlist->mmap[idx];
u64 head = perf_mmap__read_head(md);
u64 old = md->prev;
u64 end = head, start = old;
@@ -143,7 +143,7 @@ static int record__mmap_read(struct record *rec, int idx)
void *buf;
int rc = 0;
- if (rb_find_range(rec->evlist, data, md->mask, head,
+ if (rb_find_range(evlist, data, md->mask, head,
old, &start, &end))
return -1;
@@ -157,7 +157,7 @@ static int record__mmap_read(struct record *rec, int idx)
WARN_ONCE(1, "failed to keep up with mmap data. (warn only once)\n");
md->prev = head;
- perf_evlist__mmap_consume(rec->evlist, idx);
+ perf_evlist__mmap_consume(evlist, idx);
return 0;
}
@@ -182,7 +182,7 @@ static int record__mmap_read(struct record *rec, int idx)
}
md->prev = head;
- perf_evlist__mmap_consume(rec->evlist, idx);
+ perf_evlist__mmap_consume(evlist, idx);
out:
return rc;
}
@@ -498,17 +498,20 @@ static struct perf_event_header finished_round_event = {
.type = PERF_RECORD_FINISHED_ROUND,
};
-static int record__mmap_read_all(struct record *rec)
+static int record__mmap_read_evlist(struct record *rec, struct perf_evlist *evlist)
{
u64 bytes_written = rec->bytes_written;
int i;
int rc = 0;
- for (i = 0; i < rec->evlist->nr_mmaps; i++) {
- struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap;
+ if (!evlist)
+ return 0;
+
+ for (i = 0; i < evlist->nr_mmaps; i++) {
+ struct auxtrace_mmap *mm = &evlist->mmap[i].auxtrace_mmap;
- if (rec->evlist->mmap[i].base) {
- if (record__mmap_read(rec, i) != 0) {
+ if (evlist->mmap[i].base) {
+ if (record__mmap_read(rec, evlist, i) != 0) {
rc = -1;
goto out;
}
@@ -532,6 +535,17 @@ out:
return rc;
}
+static int record__mmap_read_all(struct record *rec)
+{
+ int err;
+
+ err = record__mmap_read_evlist(rec, rec->evlist);
+ if (err)
+ return err;
+
+ return err;
+}
+
static void record__init_features(struct record *rec)
{
struct perf_session *session = rec->session;