On Tue, Mar 09, 2010 at 12:37:48PM -0800, Andrew Morton wrote:
> On Tue, 9 Mar 2010 18:20:52 +0100
> Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote:
>
> > From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
> >
> > Implement arch specific arch_get_memory_phys_device function and initialize
> > phys_device for each memory section. That way we finally can tell which
> > piece of memory belongs to which physical device.
> >
> > --- a/drivers/s390/char/sclp_cmd.c
> > +++ b/drivers/s390/char/sclp_cmd.c
> > @@ -704,6 +704,13 @@ int sclp_chp_deconfigure(struct chp_id c
> > return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8);
> > }
> >
> > +int arch_get_memory_phys_device(unsigned long start_pfn)
> > +{
> > + if (!rzm)
> > + return 0;
> > + return PFN_PHYS(start_pfn) / rzm;
> > +}
> > +
> > struct chp_info_sccb {
> > struct sccb_header header;
> > u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
>
> What is the utility of this patch? It makes s390's
> /sys/devices/system/memory/memoryX/phys_device display the correct
> thing?
Yes, exactly.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>