[PATCH] print order information when OOM killing

Dump the current allocation order when OOM killing.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 5 insertions, 5 deletions

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index af79805b5576..12d563c648f7 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -228,7 +228,7 @@ static struct sysrq_key_op sysrq_term_op = {
 
 static void moom_callback(void *ignored)
 {
-        out_of_memory(GFP_KERNEL);
+        out_of_memory(GFP_KERNEL, 0);
 }
 
 static DECLARE_WORK(moom_work, moom_callback, NULL);
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 2343f999e6e1..c75954f2d868 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -148,7 +148,7 @@ struct swap_list_t {
 #define vm_swap_full() (nr_swap_pages*2 < total_swap_pages)
 
 /* linux/mm/oom_kill.c */
-extern void out_of_memory(unsigned int __nocast gfp_mask);
+extern void out_of_memory(unsigned int __nocast gfp_mask, int order);
 
 /* linux/mm/memory.c */
 extern void swapin_readahead(swp_entry_t, unsigned long, struct vm_area_struct *);
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 59666d905f19..e20d559edbaf 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -253,12 +253,12 @@ static struct mm_struct *oom_kill_process(struct task_struct *p)
  * OR try to be smart about which process to kill. Note that we
  * don't have to be perfect here, we just have to be good.
  */
-void out_of_memory(unsigned int __nocast gfp_mask)
+void out_of_memory(unsigned int __nocast gfp_mask, int order)
 {
         struct mm_struct *mm = NULL;
         task_t * p;
 
-        printk("oom-killer: gfp_mask=0x%x\n", gfp_mask);
+        printk("oom-killer: gfp_mask=0x%x, order=%d\n", gfp_mask, order);
         /* print memory stats */
         show_mem();
 
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3c9f7f881125..7fbd3ea8765c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -936,7 +936,7 @@ rebalance:
                                 goto got_pg;
                 }
 
-                out_of_memory(gfp_mask);
+                out_of_memory(gfp_mask, order);
                 goto restart;
         }