* [PATCH V2] mm: add show num_poisoned_pages when oom
@ 2013-12-10 1:38 Xishi Qiu
2013-12-10 1:53 ` Wanpeng Li
2013-12-10 19:56 ` KOSAKI Motohiro
0 siblings, 2 replies; 3+ messages in thread
From: Xishi Qiu @ 2013-12-10 1:38 UTC (permalink / raw)
To: Andrew Morton, KOSAKI Motohiro, Michal Hocko, Mel Gorman,
rientjes, Naoya Horiguchi
Cc: LKML, linux-mm, Xishi Qiu
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@huawei.com>
Suggested-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: David Rientjes <rientjes@google.com>
---
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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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH V2] mm: add show num_poisoned_pages when oom
2013-12-10 1:38 [PATCH V2] mm: add show num_poisoned_pages when oom Xishi Qiu
@ 2013-12-10 1:53 ` Wanpeng Li
2013-12-10 19:56 ` KOSAKI Motohiro
1 sibling, 0 replies; 3+ messages in thread
From: Wanpeng Li @ 2013-12-10 1:53 UTC (permalink / raw)
To: Xishi Qiu
Cc: Andrew Morton, KOSAKI Motohiro, Michal Hocko, Mel Gorman,
rientjes, Naoya Horiguchi, LKML, linux-mm
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@huawei.com>
>Suggested-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
>Acked-by: Michal Hocko <mhocko@suse.cz>
>Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
>---
> 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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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH V2] mm: add show num_poisoned_pages when oom
2013-12-10 1:38 [PATCH V2] mm: add show num_poisoned_pages when oom Xishi Qiu
2013-12-10 1:53 ` Wanpeng Li
@ 2013-12-10 19:56 ` KOSAKI Motohiro
1 sibling, 0 replies; 3+ messages in thread
From: KOSAKI Motohiro @ 2013-12-10 19:56 UTC (permalink / raw)
To: qiuxishi, akpm, mhocko, mgorman, rientjes, n-horiguchi
Cc: kosaki.motohiro, linux-kernel, linux-mm
(12/9/2013 8:38 PM), 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@huawei.com>
> Suggested-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Acked-by: Michal Hocko <mhocko@suse.cz>
> Acked-by: David Rientjes <rientjes@google.com>
> ---
> 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
> }
Looks ok.
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-12-10 1:38 [PATCH V2] mm: add show num_poisoned_pages when oom Xishi Qiu
2013-12-10 1:53 ` Wanpeng Li
2013-12-10 19:56 ` KOSAKI Motohiro
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