From d696c64450bf98f9377e793d1687a4bc8857d272 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 09ebe84a17fe4..660e1de4412a1 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(); -- 2.39.5