From: Valentin Schneider <valentin.schneider@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
linux-sh@vger.kernel.org
Subject: [PATCH 11/14] sh64: entry: Remove unneeded need_resched() loop
Date: Mon, 11 Mar 2019 22:47:49 +0000 [thread overview]
Message-ID: <20190311224752.8337-12-valentin.schneider@arm.com> (raw)
In-Reply-To: <20190311224752.8337-1-valentin.schneider@arm.com>
Since the enabling and disabling of IRQs within preempt_schedule_irq()
is contained in a need_resched() loop, we don't need the outer arch
code loop.
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: linux-sh@vger.kernel.org
---
arch/sh/kernel/cpu/sh5/entry.S | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S
index de68ffdfffbf..40e6d9a7a6a2 100644
--- a/arch/sh/kernel/cpu/sh5/entry.S
+++ b/arch/sh/kernel/cpu/sh5/entry.S
@@ -897,7 +897,6 @@ resume_kernel:
ld.l r6, TI_PRE_COUNT, r7
beq/u r7, ZERO, tr0
-need_resched:
ld.l r6, TI_FLAGS, r7
movi (1 << TIF_NEED_RESCHED), r8
and r8, r7, r8
@@ -911,9 +910,7 @@ need_resched:
ori r7, 1, r7
ptabs r7, tr1
blink tr1, LINK
-
- pta need_resched, tr1
- blink tr1, ZERO
+ blink tr0, ZERO
#endif
.global ret_from_syscall
--
2.20.1
next prev parent reply other threads:[~2019-03-11 22:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-11 22:47 [PATCH 00/14] entry: preempt_schedule_irq() callers scrub Valentin Schneider
2019-03-11 22:47 ` [PATCH 10/14] sh: entry: Remove unneeded need_resched() loop Valentin Schneider
2019-03-11 22:47 ` Valentin Schneider [this message]
2019-03-12 18:03 ` [PATCH 00/14] entry: preempt_schedule_irq() callers scrub Vineet Gupta
2019-03-12 18:18 ` Valentin Schneider
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