Commit 9b03d8ab authored Jun 02, 2017 by Paul Burton Committed by Ralf Baechle Jun 29, 2017

MIPS: Skip IPI setup if we only have 1 CPU



If we're running on a system with only 1 possible CPU then it makes no
sense to reserve or initialise IPIs since we'll never use them. Avoid
doing so.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16192/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent f259fe29

arch/mips/kernel/smp.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -335,6 +335,9 @@ int mips_smp_ipi_free(const struct cpumask *mask)

		static int __init mips_smp_ipi_init(void)
		{
		if (num_possible_cpus() == 1)
		return 0;

		mips_smp_ipi_allocate(cpu_possible_mask);

		call_desc = irq_to_desc(call_virq);