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Date: Fri, 28 Sep 2012 11:21:37 +0800 From: Ni zhan Chen <nizhan.chen@...il.com> To: wency@...fujitsu.com CC: x86@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, linux-acpi@...r.kernel.org, linux-s390@...r.kernel.org, linux-sh@...r.kernel.org, linux-ia64@...r.kernel.org, cmetcalf@...era.com, sparclinux@...r.kernel.org, rientjes@...gle.com, liuj97@...il.com, len.brown@...el.com, benh@...nel.crashing.org, paulus@...ba.org, cl@...ux.com, minchan.kim@...il.com, akpm@...ux-foundation.org, kosaki.motohiro@...fujitsu.com, isimatu.yasuaki@...fujitsu.com Subject: Re: [RFC v9 PATCH 03/21] memory-hotplug: store the node id in acpi_memory_device On 09/05/2012 05:25 PM, wency@...fujitsu.com wrote: > From: Wen Congyang <wency@...fujitsu.com> > > The memory device has only one node id. Store the node id when > enable the memory device, and we can reuse it when removing the > memory device. one question: if use numa emulation, memory device will associated to one node or ...? > > CC: David Rientjes <rientjes@...gle.com> > CC: Jiang Liu <liuj97@...il.com> > CC: Len Brown <len.brown@...el.com> > CC: Benjamin Herrenschmidt <benh@...nel.crashing.org> > CC: Paul Mackerras <paulus@...ba.org> > CC: Christoph Lameter <cl@...ux.com> > Cc: Minchan Kim <minchan.kim@...il.com> > CC: Andrew Morton <akpm@...ux-foundation.org> > CC: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> > CC: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com> > Signed-off-by: Wen Congyang <wency@...fujitsu.com> > Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com> > --- > drivers/acpi/acpi_memhotplug.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c > index 2a7beac..7873832 100644 > --- a/drivers/acpi/acpi_memhotplug.c > +++ b/drivers/acpi/acpi_memhotplug.c > @@ -83,6 +83,7 @@ struct acpi_memory_info { > struct acpi_memory_device { > struct acpi_device * device; > unsigned int state; /* State of the memory device */ > + int nid; > struct list_head res_list; > }; > > @@ -256,6 +257,9 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) > info->enabled = 1; > num_enabled++; > } > + > + mem_device->nid = node; > + > if (!num_enabled) { > printk(KERN_ERR PREFIX "add_memory failed\n"); > mem_device->state = MEMORY_INVALID_STATE; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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