[tip: perf/core] perf tools: Use perf_mmap way to detect aux mmap

[tip-bot2 for Jiri Olsa]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     1d40ae4e1784bfa1646fd153ca022db21511284f
Gitweb:        https://git.kernel.org/tip/1d40ae4e1784bfa1646fd153ca022db21511284f
Author:        Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate:    Mon, 07 Oct 2019 14:53:16 +02:00
Committer:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitterDate: Thu, 10 Oct 2019 10:11:54 -03:00

perf tools: Use perf_mmap way to detect aux mmap

We will move this code to libperf shortly, so we need to free it of
'struct auxtrace_mmap' usage, because it won't be available in libperf
(for now).

The perf_event_mmap_page::aux_size is set when the aux mmap is mapped,
so the check is equivalent.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Michael Petlan <mpetlan@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lore.kernel.org/lkml/20191007125344.14268-9-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/mmap.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
index 9f150d5..f246dd4 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -107,7 +107,9 @@ union perf_event *perf_mmap__read_event(struct mmap *map)
 
 static bool perf_mmap__empty(struct mmap *map)
 {
-	return perf_mmap__read_head(map) == map->core.prev && !map->auxtrace_mmap.base;
+	struct perf_event_mmap_page *pc = map->core.base;
+
+	return perf_mmap__read_head(map) == map->core.prev && !pc->aux_size;
 }
 
 void perf_mmap__consume(struct mmap *map)