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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-03-15 00:35:05 -0400 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-17 18:43:47 -0700 |
| commit | 57b552ba0b2faf7cce66d476ef8ce7f6210c62fd (patch) | |
| tree | e9ce4977fdf2259bd5c860b3358261f8f3522c5f /drivers/s390 | |
| parent | memory hotplug: allow setting of phys_device (diff) | |
| download | linux-dev-57b552ba0b2faf7cce66d476ef8ce7f6210c62fd.tar.xz linux-dev-57b552ba0b2faf7cce66d476ef8ce7f6210c62fd.zip | |
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>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/sclp_cmd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index b3beab610da4..fc7ae05ce48a 100644 --- 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 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]; |