[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>
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index af79805..12d563c 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -228,7 +228,7 @@
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 2343f99..c75954f 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -148,7 +148,7 @@
#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 59666d9..e20d559 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -253,12 +253,12 @@
* 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 3c9f7f8..7fbd3ea 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -936,7 +936,7 @@
goto got_pg;
}
- out_of_memory(gfp_mask);
+ out_of_memory(gfp_mask, order);
goto restart;
}