linux-kernel - [PATCH v2 6/9] RISC-V: entry: Remove unneeded need

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Message-Id: <20190923143620.29334-7-valentin.schneider@arm.com>
Date:   Mon, 23 Sep 2019 15:36:17 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org
Subject: [PATCH v2 6/9] RISC-V: 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.

Reviewed-by: Palmer Dabbelt <palmer@...ive.com>
Signed-off-by: Valentin Schneider <valentin.schneider@....com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: linux-riscv@...ts.infradead.org
---
 arch/riscv/kernel/entry.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 74ccfd464071..d0523167d261 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -250,12 +250,11 @@ restore_all:
 resume_kernel:
 	REG_L s0, TASK_TI_PREEMPT_COUNT(tp)
 	bnez s0, restore_all
-need_resched:
 	REG_L s0, TASK_TI_FLAGS(tp)
 	andi s0, s0, _TIF_NEED_RESCHED
 	beqz s0, restore_all
 	call preempt_schedule_irq
-	j need_resched
+	j restore_all
 #endif
 
 work_pending:
-- 
2.22.0