Merge branch 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

Pull percpu changes from Tejun Heo:
 "Nothing exciting here either.  Joonsoo's is almost cosmetic.  Cyrill's
  patch fixes "percpu_alloc" early kernel param handling so that the
  kernel doesn't crash when the parameter is specified w/o any argument."

* 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  mm, percpu: Make sure percpu_alloc early parameter has an argument
  percpu: make pcpu_free_chunk() use pcpu_mem_free() instead of kfree()

1 files changed, 4 insertions, 1 deletions

diff --git a/mm/percpu.c b/mm/percpu.c
index ddc5efb9c5bb..8c8e08f3a692 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -631,7 +631,7 @@ static void pcpu_free_chunk(struct pcpu_chunk *chunk)
         if (!chunk)
                 return;
         pcpu_mem_free(chunk->map, chunk->map_alloc * sizeof(chunk->map[0]));
-        kfree(chunk);
+        pcpu_mem_free(chunk, pcpu_chunk_struct_size);
 }
 
 /*
@@ -1380,6 +1380,9 @@ enum pcpu_fc pcpu_chosen_fc __initdata = PCPU_FC_AUTO;
 
 static int __init percpu_alloc_setup(char *str)
 {
+        if (!str)
+                return -EINVAL;
+
         if (0)
                 /* nada */;
 #ifdef CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK