arm64: Fix -Wunused-function warning when !CONFIG_HOTPLUG_CPU (9d9edb96) · Commits · 戴 / test

If CONFIG_HOTPLUG_CPU is n, gcc warns: arch/arm64/kernel/smp.c:967:13: warning: ‘ipi_teardown’ defined but not used [-Wunused-function] static void ipi_teardown(int cpu) ^~~~~~~~~~~~ Use #ifdef guard this. Signed-off-by:

YueHaibing <yuehaibing@huawei.com> Signed-off-by:

Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20200918123318.23764-1-yuehaibing@huawei.com

arch/arm64/kernel/smp.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -82,9 +82,9 @@ static int nr_ipi __read_mostly = NR_IPI;
		static struct irq_desc *ipi_desc[NR_IPI] __read_mostly;

		static void ipi_setup(int cpu);
		static void ipi_teardown(int cpu);

		#ifdef CONFIG_HOTPLUG_CPU
		static void ipi_teardown(int cpu);
		static int op_cpu_kill(unsigned int cpu);
		#else
		static inline int op_cpu_kill(unsigned int cpu)
		@@ -964,6 +964,7 @@ static void ipi_setup(int cpu)
		enable_percpu_irq(ipi_irq_base + i, 0);
		}

		#ifdef CONFIG_HOTPLUG_CPU
		static void ipi_teardown(int cpu)
		{
		int i;
		@@ -974,6 +975,7 @@ static void ipi_teardown(int cpu)
		for (i = 0; i < nr_ipi; i++)
		disable_percpu_irq(ipi_irq_base + i);
		}
		#endif

		void __init set_smp_ipi_range(int ipi_base, int n)
		{

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