linux-kernel - [PATCH] sched/core: add __sched tag for io

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Date:   Fri, 31 May 2019 16:29:12 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Ingo Molnar <mingo@...hat.com>
CC:     LKML <linux-kernel@...r.kernel.org>,
        Gao Xiang <gaoxiang25@...wei.com>, Tejun Heo <tj@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH] sched/core: add __sched tag for io_schedule()

non-inline io_schedule() was introduced in
commit 10ab56434f2f ("sched/core: Separate out io_schedule_prepare() and io_schedule_finish()")
Keep in line with io_schedule_timeout, Otherwise
"/proc/<pid>/wchan" will report io_schedule()
rather than its callers when waiting io.

Reported-by: Jilong Kou <koujilong@...wei.com>
Cc: Tejun Heo <tj@...nel.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Gao Xiang <gaoxiang25@...wei.com>
---
 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 102dfcf0a29a..361d60423c11 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5122,7 +5122,7 @@ long __sched io_schedule_timeout(long timeout)
 }
 EXPORT_SYMBOL(io_schedule_timeout);
 
-void io_schedule(void)
+void __sched io_schedule(void)
 {
 	int token;
 
-- 
2.17.1