X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fsoftirq.c;h=ec8fed42a86f5db1001701c2da36c3287cbcaa36;hb=946f2ee5c7312e8acac4f3ab6629e7e2d36a3646;hp=ad3295cdded55032f248bf53dc6b908c56702581;hpb=407cf84f956ee4b52da5508d5357b8ae212ff77c;p=linux-2.6

diff --git a/kernel/softirq.c b/kernel/softirq.c
index ad3295cdde..ec8fed42a8 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -16,6 +16,7 @@
 #include <linux/cpu.h>
 #include <linux/kthread.h>
 #include <linux/rcupdate.h>
+#include <linux/smp.h>
 
 #include <asm/irq.h>
 /*
@@ -495,3 +496,22 @@ __init int spawn_ksoftirqd(void)
 	register_cpu_notifier(&cpu_nfb);
 	return 0;
 }
+
+#ifdef CONFIG_SMP
+/*
+ * Call a function on all processors
+ */
+int on_each_cpu(void (*func) (void *info), void *info, int retry, int wait)
+{
+	int ret = 0;
+
+	preempt_disable();
+	ret = smp_call_function(func, info, retry, wait);
+	local_irq_disable();
+	func(info);
+	local_irq_enable();
+	preempt_enable();
+	return ret;
+}
+EXPORT_SYMBOL(on_each_cpu);
+#endif