RISC-V: entry: Remove unneeded need_resched() loop

Valentin Schneider · paul-walmsley-sifive · commit cd9e72b80090 · 2019-10-09T16:48:27.000-07:00
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 &lt;palmer@sifive.com&gt;
Signed-off-by: Valentin Schneider &lt;valentin.schneider@arm.com&gt;
Cc: Albert Ou &lt;aou@eecs.berkeley.edu&gt;
Cc: linux-riscv@lists.infradead.org
Signed-off-by: Paul Walmsley &lt;paul.walmsley@sifive.com&gt;
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
@@ -273,12 +273,11 @@ 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:
