On Tue, Dec 10, 2013 at 09:38:52AM +0800, Xishi Qiu wrote:
>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 <qiuxishi@xxxxxxxxxx>
>Suggested-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
>Acked-by: Michal Hocko <mhocko@xxxxxxx>
>Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Reviewed-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
>---
> lib/show_mem.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
>diff --git a/lib/show_mem.c b/lib/show_mem.c
>index 5847a49..1cbdcd8 100644
>--- a/lib/show_mem.c
>+++ b/lib/show_mem.c
>@@ -46,4 +46,7 @@ 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
> }
>--
>1.7.1
>
>
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