From eb5411334c289c473bc11d5cef8b0bea8d7ce324 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 21 Oct 2021 18:04:12 +0100 Subject: [PATCH] MIPS: loongson64: Drop call to irq_cpu_offline() Also loongson64 calls irq_cpu_offline(), none of its interrupt controllers implement the .irq_cpu_offline callback. It is thus obvious that this call only serves the dubious purpose of wasting precious CPU cycles by iterating over all interrupts. Get rid of the call altogether. Signed-off-by: Marc Zyngier Acked-by: Thomas Bogendoerfer Reviewed-by: Florian Fainelli Tested-by: Serge Semin Link: https://lore.kernel.org/r/20211021170414.3341522-2-maz@kernel.org --- arch/mips/loongson64/smp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/mips/loongson64/smp.c b/arch/mips/loongson64/smp.c index 09ebe84..660e1de 100644 --- a/arch/mips/loongson64/smp.c +++ b/arch/mips/loongson64/smp.c @@ -550,7 +550,6 @@ static int loongson3_cpu_disable(void) set_cpu_online(cpu, false); calculate_cpu_foreign_map(); local_irq_save(flags); - irq_cpu_offline(); clear_c0_status(ST0_IM); local_irq_restore(flags); local_flush_tlb_all(); -- 2.7.4