From 90437bffa5f9b1440ba03e023f4875d1814b9360 Mon Sep 17 00:00:00 2001 From: Valentin Schneider Date: Mon, 11 Mar 2019 22:47:46 +0000 Subject: [PATCH] powerpc/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 [mpe: Rebase since CURRENT_THREAD_INFO() removal] Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/entry_32.S | 5 +---- arch/powerpc/kernel/entry_64.S | 8 +------- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 235a01d34b6d..c18f3490a77e 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -906,10 +906,7 @@ resume_kernel: */ bl trace_hardirqs_off #endif -1: bl preempt_schedule_irq - lwz r3,TI_FLAGS(r2) - andi. r0,r3,_TIF_NEED_RESCHED - bne- 1b + bl preempt_schedule_irq #ifdef CONFIG_TRACE_IRQFLAGS /* And now, to properly rebalance the above, we tell lockdep they * are being turned back on, which will happen when we return diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 7cc25389c6bd..d978af78bf2a 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -865,13 +865,7 @@ resume_kernel: * sure we are soft-disabled first and reconcile irq state. */ RECONCILE_IRQ_STATE(r3,r4) -1: bl preempt_schedule_irq - - /* Re-test flags and eventually loop */ - ld r9, PACA_THREAD_INFO(r13) - ld r4,TI_FLAGS(r9) - andi. r0,r4,_TIF_NEED_RESCHED - bne 1b + bl preempt_schedule_irq /* * arch_local_irq_restore() from preempt_schedule_irq above may -- 2.30.2