Commit eb541133 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

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: default avatarMarc Zyngier <maz@kernel.org>
Acked-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Tested-by: default avatarSerge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20211021170414.3341522-2-maz@kernel.org
parent bf8bde41

arch/mips/loongson64/smp.c

+0 −1
Original line number Diff line number Diff line
@@ -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();