Messages in this thread Patch in this message | | | Date | Tue, 23 Oct 2012 12:26:26 +0200 | From | Michal Hocko <> | Subject | Re: mmotm 2012-10-22-17-08 uploaded (memory_hotplug.c) |
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On Mon 22-10-12 21:40:09, Randy Dunlap wrote: > On 10/22/2012 05:09 PM, akpm@linux-foundation.org wrote: > > > The mm-of-the-moment snapshot 2012-10-22-17-08 has been uploaded to > > > > http://www.ozlabs.org/~akpm/mmotm/ > > > > mmotm-readme.txt says > > > > README for mm-of-the-moment: > > > > http://www.ozlabs.org/~akpm/mmotm/ > > > > This is a snapshot of my -mm patch queue. Uploaded at random hopefully > > more than once a week. > > > > > > on x86_64, when CONFIG_MEMORY_HOTREMOVE is not enabled: > > mm/built-in.o: In function `online_pages': > (.ref.text+0x10e7): undefined reference to `zone_pcp_reset'
Caused by memory-hotplug-allocate-zones-pcp-before-onlining-pages.patch. And fixed by. Andrew either fold this one in to the above one or keep it separate what works better with you. --- From e8d79e446b00e57c195c59570df0f2ec435ca39d Mon Sep 17 00:00:00 2001 From: Michal Hocko <mhocko@suse.cz> Date: Tue, 23 Oct 2012 11:07:11 +0200 Subject: [PATCH] mm: make zone_pcp_reset independ on MEMORY_HOTREMOVE
340175b7 (mm/hotplug: free zone->pageset when a zone becomes empty) introduced zone_pcp_reset and hided it inside CONFIG_MEMORY_HOTREMOVE. Since "memory-hotplug: allocate zone's pcp before onlining pages" the function is also called from online_pages which is defined outside CONFIG_MEMORY_HOTREMOVE which causes a linkage error.
The function, although not used outside of MEMORY_{HOTPLUT,HOTREMOVE}, seems like universal enough so let's keep it at its current location and only remove the HOTREMOVE guard.
Signed-off-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Wen Congyang <wency@cn.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Jiang Liu <liuj97@gmail.com> Cc: Len Brown <len.brown@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Christoph Lameter <cl@linux.com> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e29912e..30e359c 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5981,7 +5981,6 @@ void __meminit zone_pcp_update(struct zone *zone) } #endif -#ifdef CONFIG_MEMORY_HOTREMOVE void zone_pcp_reset(struct zone *zone) { unsigned long flags; @@ -6001,6 +6000,7 @@ void zone_pcp_reset(struct zone *zone) local_irq_restore(flags); } +#ifdef CONFIG_MEMORY_HOTREMOVE /* * All pages in the range must be isolated before calling this. */ -- 1.7.10.4
-- Michal Hocko SUSE Labs
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