summaryrefslogtreecommitdiff
path: root/mm/percpu_up.c
diff options
context:
space:
mode:
authorJens Axboe <jens.axboe@oracle.com>2010-04-13 20:03:21 +0200
committerJens Axboe <jens.axboe@oracle.com>2010-04-13 20:03:21 +0200
commit4facdaec1ce186e731e6baa04f074804849e9a49 (patch)
treee521fba8386bf23533cfe21ea5200e615960ec07 /mm/percpu_up.c
parenta11cdaa7af56423a921a8bdad8f5a5f4ddca918a (diff)
parent0d0fb0f9c5fddef4a10242fe3337f00f528a3099 (diff)
downloadlwn-4facdaec1ce186e731e6baa04f074804849e9a49.tar.gz
lwn-4facdaec1ce186e731e6baa04f074804849e9a49.zip
Merge branch 'master' into for-2.6.35
Conflicts: block/blk-cgroup.c block/cfq-iosched.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm/percpu_up.c')
-rw-r--r--mm/percpu_up.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/mm/percpu_up.c b/mm/percpu_up.c
new file mode 100644
index 000000000000..c4351c7f57d2
--- /dev/null
+++ b/mm/percpu_up.c
@@ -0,0 +1,30 @@
+/*
+ * mm/percpu_up.c - dummy percpu memory allocator implementation for UP
+ */
+
+#include <linux/module.h>
+#include <linux/percpu.h>
+#include <linux/slab.h>
+
+void __percpu *__alloc_percpu(size_t size, size_t align)
+{
+ /*
+ * Can't easily make larger alignment work with kmalloc. WARN
+ * on it. Larger alignment should only be used for module
+ * percpu sections on SMP for which this path isn't used.
+ */
+ WARN_ON_ONCE(align > SMP_CACHE_BYTES);
+ return kzalloc(size, GFP_KERNEL);
+}
+EXPORT_SYMBOL_GPL(__alloc_percpu);
+
+void free_percpu(void __percpu *p)
+{
+ kfree(p);
+}
+EXPORT_SYMBOL_GPL(free_percpu);
+
+phys_addr_t per_cpu_ptr_to_phys(void *addr)
+{
+ return __pa(addr);
+}