aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/up.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-12 19:28:26 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-12 19:28:26 -0500
commit1181a2449969c59f0ab6b95374fe6983cc07286d (patch)
treecdbd320e6d2e0854ef8c699eb711d22e03275522 /kernel/up.c
parentb743791639d8142277df1c2814c282e3ad752f06 (diff)
parent9d0793370987b98708d2f75ee3bba7c1008d8512 (diff)
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sparc64: Fix cpumask related build failure smp_call_function_single(): be slightly less stupid, fix smp_call_function_single(): be slightly less stupid rcu: fix bug in rcutorture system-shutdown code
Diffstat (limited to 'kernel/up.c')
-rw-r--r--kernel/up.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/up.c b/kernel/up.c
new file mode 100644
index 000000000000..c04b9dcfcebe
--- /dev/null
+++ b/kernel/up.c
@@ -0,0 +1,20 @@
1/*
2 * Uniprocessor-only support functions. The counterpart to kernel/smp.c
3 */
4
5#include <linux/kernel.h>
6#include <linux/module.h>
7#include <linux/smp.h>
8
9int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
10 int wait)
11{
12 WARN_ON(cpu != 0);
13
14 local_irq_disable();
15 (func)(info);
16 local_irq_enable();
17
18 return 0;
19}
20EXPORT_SYMBOL(smp_call_function_single);