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Commit de489353 authored by Avi Kivity's avatar Avi Kivity
Browse files

i386: Allow smp_call_function_single() to current cpu 



This removes the requirement for callers to get_cpu() to check in simple
cases.

Cc: Andi Kleen <ak@suse.de>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 4055551b

arch/i386/kernel/smpcommon.c

+5 −3
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ int smp_call_function(void (*func) (void *info), void *info, int nonatomic, 
EXPORT_SYMBOL(smp_call_function);



/**

 * smp_call_function_single - Run a function on another CPU

 * smp_call_function_single - Run a function on a specific CPU

 * @cpu: The target CPU.  Cannot be the calling CPU.

 * @func: The function to run. This must be fast and non-blocking.

 * @info: An arbitrary pointer to pass to the function.
@@ -66,9 +66,11 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, 
	int ret;

	int me = get_cpu();

	if (cpu == me) {

		WARN_ON(1);

		local_irq_disable();

		func(info);

		local_irq_enable();

		put_cpu();

		return -EBUSY;

		return 0;

	}



	ret = smp_call_function_mask(cpumask_of_cpu(cpu), func, info, wait);