Commit 143d64bd authored Dec 08, 2022 by Bibo Mao Committed by Huacai Chen Dec 08, 2022

LoongArch: Export symbol for function smp_send_reschedule()



Function smp_send_reschedule() is standard kernel API, which is defined
in header file include/linux/smp.h. However, on LoongArch it is defined
as an inline function, this is confusing and kernel modules can not use
this function.

Now we define smp_send_reschedule() as a general function, and add a
EXPORT_SYMBOL_GPL on this function, so that kernel modules can use it.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

parent 76dcd734

arch/loongarch/include/asm/smp.h

+0 −10

Original line number	Diff line number	Diff line
		@@ -78,16 +78,6 @@ extern void calculate_cpu_foreign_map(void);
		*/
		extern void show_ipi_list(struct seq_file *p, int prec);

		/*
		* This function sends a 'reschedule' IPI to another CPU.
		* it goes straight through and wastes no time serializing
		* anything. Worst case is that we lose a reschedule ...
		*/
		static inline void smp_send_reschedule(int cpu)
		{
		loongson_send_ipi_single(cpu, SMP_RESCHEDULE);
		}

		static inline void arch_send_call_function_single_ipi(int cpu)
		{
		loongson_send_ipi_single(cpu, SMP_CALL_FUNCTION);

arch/loongarch/kernel/smp.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -149,6 +149,17 @@ void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action)
		ipi_write_action(cpu_logical_map(i), (u32)action);
		}

		/*
		* This function sends a 'reschedule' IPI to another CPU.
		* it goes straight through and wastes no time serializing
		* anything. Worst case is that we lose a reschedule ...
		*/
		void smp_send_reschedule(int cpu)
		{
		loongson_send_ipi_single(cpu, SMP_RESCHEDULE);
		}
		EXPORT_SYMBOL_GPL(smp_send_reschedule);

		irqreturn_t loongson_ipi_interrupt(int irq, void *dev)
		{
		unsigned int action;