linux-kernel - [PATCH] sched/core: Remove the unused schedule

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Message-Id: <20190727165513.25636-1-devel@etsukata.com>
Date:   Sun, 28 Jul 2019 01:55:13 +0900
From:   Eiichi Tsukata <devel@...ukata.com>
To:     tglx@...utronix.de, luto@...nel.org, mingo@...hat.com,
        peterz@...radead.org, linux-kernel@...r.kernel.org
Cc:     Eiichi Tsukata <devel@...ukata.com>
Subject: [PATCH] sched/core: Remove the unused schedule_user() function

Since commit 02bc7768fe44 ("x86/asm/entry/64: Migrate error and IRQ exit
work to C and remove old assembly code"), it's no longer used.

Signed-off-by: Eiichi Tsukata <devel@...ukata.com>
---
 kernel/sched/core.c | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 2b037f195473..0079bebe0086 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3973,25 +3973,6 @@ void __sched schedule_idle(void)
 	} while (need_resched());
 }
 
-#ifdef CONFIG_CONTEXT_TRACKING
-asmlinkage __visible void __sched schedule_user(void)
-{
-	/*
-	 * If we come here after a random call to set_need_resched(),
-	 * or we have been woken up remotely but the IPI has not yet arrived,
-	 * we haven't yet exited the RCU idle mode. Do it here manually until
-	 * we find a better solution.
-	 *
-	 * NB: There are buggy callers of this function.  Ideally we
-	 * should warn if prev_state != CONTEXT_USER, but that will trigger
-	 * too frequently to make sense yet.
-	 */
-	enum ctx_state prev_state = exception_enter();
-	schedule();
-	exception_exit(prev_state);
-}
-#endif
-
 /**
  * schedule_preempt_disabled - called with preemption disabled
  *
-- 
2.21.0