[PATCH] slab: remove unused align parameter from alloc_percpu

__alloc_percpu and alloc_percpu both take an 'align' argument which is
completely ignored.  snmp6_mib_init() in net/ipv6/af_inet6.c attempts to use
it, but it will be ignored.  Therefore, remove the 'align' argument and fixup
the lone caller.

Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index fb8d2d2..20317d8 100644 (file)
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -33,14 +33,14 @@ struct percpu_data {
         (__typeof__(ptr))__p->ptrs[(cpu)];     \
 })
 
-extern void *__alloc_percpu(size_t size, size_t align);
+extern void *__alloc_percpu(size_t size);
 extern void free_percpu(const void *);
 
 #else /* CONFIG_SMP */
 
 #define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); })
 
-static inline void *__alloc_percpu(size_t size, size_t align)
+static inline void *__alloc_percpu(size_t size)
 {
        void *ret = kmalloc(size, GFP_KERNEL);
        if (ret)
@@ -55,7 +55,6 @@ static inline void free_percpu(const void *ptr)
 #endif /* CONFIG_SMP */
 
 /* Simple wrapper for the common case: zeros memory. */
-#define alloc_percpu(type) \
-       ((type *)(__alloc_percpu(sizeof(type), __alignof__(type))))
+#define alloc_percpu(type)     ((type *)(__alloc_percpu(sizeof(type))))
 
 #endif /* __LINUX_PERCPU_H */

diff --git a/mm/slab.c b/mm/slab.c
index e5ec26e..eb70fdd 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2944,9 +2944,8 @@ EXPORT_SYMBOL(__kmalloc);
  * Objects should be dereferenced using the per_cpu_ptr macro only.
  *
  * @size: how many bytes of memory are required.
- * @align: the alignment, which can't be greater than SMP_CACHE_BYTES.
  */
-void *__alloc_percpu(size_t size, size_t align)
+void *__alloc_percpu(size_t size)
 {
        int i;
        struct percpu_data *pdata = kmalloc(sizeof (*pdata), GFP_KERNEL);

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 68afc53..25c3fe5 100644 (file)
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -689,11 +689,11 @@ snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
        if (ptr == NULL)
                return -EINVAL;
 
-       ptr[0] = __alloc_percpu(mibsize, mibalign);
+       ptr[0] = __alloc_percpu(mibsize);
        if (!ptr[0])
                goto err0;
 
-       ptr[1] = __alloc_percpu(mibsize, mibalign);
+       ptr[1] = __alloc_percpu(mibsize);
        if (!ptr[1])
                goto err1;