linux-kernel - [PATCH 37/49] perf tools: Add perf_mmap__read

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180109153522.14116-38-jolsa@kernel.org>
Date:   Tue,  9 Jan 2018 16:35:10 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 37/49] perf tools: Add perf_mmap__read_tail function

It will be used in following patches.

Link: http://lkml.kernel.org/n/tip-4id1fjlu5ypfqnu9kvpo7l3z@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/mmap.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h
index b14bf0040518..b6f7d4a9be01 100644
--- a/tools/perf/util/mmap.h
+++ b/tools/perf/util/mmap.h
@@ -78,6 +78,13 @@ static inline u64 perf_mmap__read_head(struct perf_mmap *mm)
 	return head;
 }
 
+static inline u64 perf_mmap__read_tail(struct perf_mmap *md)
+{
+	struct perf_event_mmap_page *pc = md->base;
+
+	return pc->data_tail;
+}
+
 static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail)
 {
 	struct perf_event_mmap_page *pc = md->base;
-- 
2.13.6