From 3a62a7b8200a177ad96161e4f2678514e6ee301e Mon Sep 17 00:00:00 2001
From: Wang Nan <wangnan0@huawei.com>
Date: Mon, 23 May 2016 07:13:41 +0000
Subject: perf record: Read from backward ring buffer

Introduce rb_find_range() to find start and end position from a backward
ring buffer.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1463987628-163563-5-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/evlist.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tools/perf/util/evlist.h')

diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 97090b70976d..d740fb877ab6 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -44,6 +44,7 @@ struct perf_evlist {
 	bool		 overwrite;
 	bool		 enabled;
 	bool		 has_user_cpus;
+	bool		 backward;
 	size_t		 mmap_len;
 	int		 id_pos;
 	int		 is_pos;
-- 
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