Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dab5209cd878c146d9f6923f061d1c2725ff210f
Commit: dab5209cd878c146d9f6923f061d1c2725ff210f
Parent: 7dc1da9ffae5a344f7115d019e2be069d3e1bb8d
Author: Carsten Otte <[EMAIL PROTECTED]>
AuthorDate: Sat Jan 26 14:11:27 2008 +0100
Committer: Martin Schwidefsky <[EMAIL PROTECTED]>
CommitDate: Sat Jan 26 14:11:31 2008 +0100
[S390] add smp_call_function_mask
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 <[EMAIL PROTECTED]>
Signed-off-by: Martin Schwidefsky <[EMAIL PROTECTED]>
---
arch/s390/kernel/smp.c | 27 +++++++++++++++++++++++++++
include/asm-s390/smp.h | 2 ++
2 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 040406d..f66db71 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -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;
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index 218454b..c7b7432 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -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
-
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