x86, lib: Add wbinvd smp helpers (a7b480e7) · Commits · 戴 / test

arch/x86/include/asm/smp.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -135,6 +135,8 @@ int native_cpu_disable(void);
		void native_cpu_die(unsigned int cpu);
		void native_play_dead(void);
		void play_dead_common(void);
		void wbinvd_on_cpu(int cpu);
		int wbinvd_on_all_cpus(void);

		void native_send_call_func_ipi(const struct cpumask *mask);
		void native_send_call_func_single_ipi(int cpu);
		@@ -147,6 +149,13 @@ static inline int num_booting_cpus(void)
		{
		return cpumask_weight(cpu_callout_mask);
		}
		#else /* !CONFIG_SMP */
		#define wbinvd_on_cpu(cpu) wbinvd()
		static inline int wbinvd_on_all_cpus(void)
		{
		wbinvd();
		return 0;
		}
		#endif /* CONFIG_SMP */

		extern unsigned disabled_cpus __cpuinitdata;

+1 −1

Original line number	Diff line number	Diff line
		@@ -14,7 +14,7 @@ $(obj)/inat.o: $(obj)/inat-tables.c

		clean-files := inat-tables.c

		obj-$(CONFIG_SMP) += msr-smp.o
		obj-$(CONFIG_SMP) += msr-smp.o cache-smp.o

		lib-y := delay.o
		lib-y += thunk_$(BITS).o

0 → 100644

+19 −0

Original line number	Diff line number	Diff line
		#include <linux/smp.h>
		#include <linux/module.h>

		static void __wbinvd(void *dummy)
		{
		wbinvd();
		}

		void wbinvd_on_cpu(int cpu)
		{
		smp_call_function_single(cpu, __wbinvd, NULL, 1);
		}
		EXPORT_SYMBOL(wbinvd_on_cpu);

		int wbinvd_on_all_cpus(void)
		{
		return on_each_cpu(__wbinvd, NULL, 1);
		}
		EXPORT_SYMBOL(wbinvd_on_all_cpus);