Commit 57b552ba authored Mar 15, 2010 by Heiko Carstens Committed by Linus Torvalds Mar 17, 2010

memory hotplug/s390: set phys_device



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>

parent bc32df00

drivers/s390/char/sclp_cmd.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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];