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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 RESEND 7/7] sh64: entry: Remove unneeded need_resched() loop
Date: Tue, 28 May 2019 11:48:48 +0100	[thread overview]
Message-ID: <20190528104848.13160-8-valentin.schneider@arm.com> (raw)
In-Reply-To: <20190528104848.13160-1-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


      parent reply	other threads:[~2019-05-28 10:49 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-28 10:48 [PATCH RESEND 0/7] entry: preempt_schedule_irq() callers scrub Valentin Schneider
2019-05-28 10:48 ` [PATCH RESEND 1/7] sched/core: Fix preempt_schedule() interrupt return comment Valentin Schneider
2019-05-28 10:58   ` Valentin Schneider
2019-06-11 19:30     ` Thomas Gleixner
2019-05-28 10:48 ` [PATCH RESEND 2/7] csky: entry: Remove unneeded need_resched() loop Valentin Schneider
2019-05-29  1:48   ` Guo Ren
2019-05-28 10:48 ` [PATCH RESEND 3/7] h8300: " Valentin Schneider
2019-05-28 10:48 ` [PATCH RESEND 4/7] microblaze: " Valentin Schneider
2019-05-28 10:48 ` [PATCH RESEND 5/7] RISC-V: " Valentin Schneider
2019-05-30  4:09   ` Palmer Dabbelt
2019-05-30 16:37     ` Valentin Schneider
2019-05-28 10:48 ` [PATCH RESEND 6/7] sh: " Valentin Schneider
2019-05-28 10:48 ` Valentin Schneider [this message]

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