linux-kernel - [PATCH v2 5/9] microblaze: entry: Remove unneeded need

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Message-Id: <20190923143620.29334-6-valentin.schneider@arm.com>
Date:   Mon, 23 Sep 2019 15:36:16 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Michal Simek <monstr@...str.eu>
Subject: [PATCH v2 5/9] microblaze: entry: Remove unneeded need_resched() loop

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@....com>
Cc: Michal Simek <monstr@...str.eu>
---
 arch/microblaze/kernel/entry.S | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index 4e1b567becd6..de7083bd1d24 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -738,14 +738,9 @@ no_intr_resched:
 	andi	r5, r5, _TIF_NEED_RESCHED;
 	beqi	r5, restore /* if zero jump over */
 
-preempt:
 	/* interrupts are off that's why I am calling preempt_chedule_irq */
 	bralid	r15, preempt_schedule_irq
 	nop
-	lwi	r11, CURRENT_TASK, TS_THREAD_INFO;	/* get thread info */
-	lwi	r5, r11, TI_FLAGS;		/* get flags in thread info */
-	andi	r5, r5, _TIF_NEED_RESCHED;
-	bnei	r5, preempt /* if non zero jump to resched */
 restore:
 #endif
 	VM_OFF /* MS: turn off MMU */
-- 
2.22.0