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[S390] add smp_call_function_mask

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This patch adds the s390 variant for smp_call_function_mask(). The
implementation is pretty straight forward using the wrapper
__smp_call_function_map() which already takes a cpumask_t argument.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Carsten Otte 2008-01-26 14:11:27 +01:00 committed by Martin Schwidefsky
parent 7dc1da9ffa
commit dab5209cd8
2 changed files with 29 additions and 0 deletions
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27
arch/s390/kernel/smp.c
View file

@ -210,6 +210,33 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
}
EXPORT_SYMBOL(smp_call_function_single);
/**
* smp_call_function_mask(): Run a function on a set of other CPUs.
* @mask: The set of cpus to run on. Must not include the current cpu.
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
* Returns 0 on success, else a negative status code.
*
* If @wait is true, then returns once @func has returned; otherwise
* it returns just before the target cpu calls @func.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int
smp_call_function_mask(cpumask_t mask,
void (*func)(void *), void *info,
int wait)
{
preempt_disable();
__smp_call_function_map(func, info, 0, wait, mask);
preempt_enable();
return 0;
}
EXPORT_SYMBOL(smp_call_function_mask);
void smp_send_stop(void)
{
int cpu, rc;

2
include/asm-s390/smp.h
View file

@ -90,6 +90,8 @@ extern void __cpu_die (unsigned int cpu);
extern void cpu_die (void) __attribute__ ((noreturn));
extern int __cpu_up (unsigned int cpu);
extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
void *info, int wait);
#endif
#ifndef CONFIG_SMP