linux/arch
Nathan Fontenot 762ec15707 powerpc/pseries: Expose pseries devicetree_update()
Newer firmware on Power systems can transparently reassign platform resources
(CPU and Memory) in use. For instance, if a processor or memory unit is
predicted to fail, the platform may transparently move the processing to an
equivalent unused processor or the memory state to an equivalent unused
memory unit. However, reassigning resources across NUMA boundaries may alter
the performance of the partition. When such reassignment is necessary, the
Platform Resource Reassignment Notification (PRRN) option provides a
mechanism to inform the Linux kernel of changes to the NUMA affinity of
its platform resources.

When rtasd receives a PRRN event, it needs to make a series of RTAS
calls (ibm,update-nodes and ibm,update-properties) to retrieve the
updated device tree information. These calls are already handled in the
pseries_devicetree_update() routine used in partition migration.

This patch exposes pseries_devicetree_update() to make it accessible
to other pseries routines, this patch also updates pseries_devicetree_update()
to take a 32-bit scope parameter. The scope value, which was previously hard
coded to 1 for partition migration, is used for the RTAS calls
ibm,update-nodes/properties to update the device tree.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-04-26 16:08:19 +10:00
..
alpha alpha: irq: remove deprecated use of IRQF_DISABLED 2013-04-07 12:59:30 -07:00
arc ARC: Add implicit compiler barrier to raw_local_irq* functions 2013-04-08 16:10:26 -07:00
arm Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm 2013-04-20 18:38:06 -07:00
arm64 Fix IS_ENABLED() usage typo (missing CONFIG_ prefix). 2013-03-28 13:45:49 -07:00
avr32 avr32: fix build error in atstk1006_defconfig 2013-04-17 16:10:44 -07:00
blackfin Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
c6x add memory barrier to arch_local_irq_restore 2013-04-09 15:35:46 -04:00
cris Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
frv Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
h8300 Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
hexagon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
ia64 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-04-09 12:22:49 -07:00
m32r UAPI: fix endianness conditionals in M32R's asm/stat.h 2013-03-13 15:21:49 -07:00
m68k m68k: define a local gpio_request_one() function 2013-04-09 15:15:31 +10:00
metag memblock: kill "config MAX_ACTIVE_REGIONS" 2013-04-18 13:03:53 +10:00
microblaze Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
mips Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-04-05 12:23:12 -07:00
mn10300 Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
openrisc openrisc: remove HAVE_VIRT_TO_BUS 2013-03-13 06:12:39 +01:00
parisc Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
powerpc powerpc/pseries: Expose pseries devicetree_update() 2013-04-26 16:08:19 +10:00
s390 s390: move dummy io_remap_pfn_range() to asm/pgtable.h 2013-04-17 08:46:19 -07:00
score Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
sh memblock: kill "config MAX_ACTIVE_REGIONS" 2013-04-18 13:03:53 +10:00
sparc sparc64: Fix race in TLB batch processing. 2013-04-19 17:26:26 -04:00
tile tile: comment assumption about __insn_mtspr for <asm/irqflags.h> 2013-04-09 10:08:14 -07:00
um um: Use tty_port in SIGWINCH handler 2013-03-11 10:08:04 +01:00
unicore32 Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
x86 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-21 10:25:42 -07:00
xtensa Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
.gitignore
Kconfig Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00