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memory hotplug/s390: set phys_device

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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.

This makes s390's /sys/devices/system/memory/memoryX/phys_device display
the correct thing?

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Heiko Carstens 2010-03-15 00:35:05 -04:00 committed by Linus Torvalds
parent bc32df0089
commit 57b552ba0b
1 changed files with 7 additions and 0 deletions
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7
drivers/s390/char/sclp_cmd.c
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@ -704,6 +704,13 @@ int sclp_chp_deconfigure(struct chp_id chpid)
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];