lib/show_mem.c: show num_poisoned_pages when oom

Show num_poisoned_pages when oom, it is a little helpful to find the reason. Also it will be emitted anytime show_mem() is called. Signed-off-by: Xishi Qiu <[email protected]> Suggested-by: Naoya Horiguchi <[email protected]> Acked-by: Michal Hocko <[email protected]> Acked-by: David Rientjes <[email protected]> Reviewed-by: Wanpeng Li <[email protected]> Acked-by: KOSAKI Motohiro <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
sum-it · Jan 22, 2014 · 25487d7 · 25487d7
1 parent 4883e99
commit 25487d7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/show_mem.c b/lib/show_mem.c
@@ -43,4 +43,7 @@ void show_mem(unsigned int filter)
 	printk("%lu pages in pagetable cache\n",
 		quicklist_total_size());
 #endif
+#ifdef CONFIG_MEMORY_FAILURE
+	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
+#endif
 }