Commit cd9e72b8 authored Sep 23, 2019 by Valentin Schneider Committed by Paul Walmsley Oct 09, 2019

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@sifive.com>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

parent 8bb0daef

arch/riscv/kernel/entry.S

+1 −2

Original line number	Diff line number	Diff line
		@@ -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:

Admin message