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authorNathan Fontenot <nfont@austin.ibm.com>2009-11-24 21:10:49 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-12-09 17:09:32 +1100
commitab519a011caa5ec47d992cb8a4fc8e7af9b9e3f8 (patch)
treea76bb05e86bbc12fe4041a1552a0543f44c4f738 /arch/powerpc/include/asm/pSeries_reconfig.h
parent1496e89ae2a0962748e55165a590fa3209c6f158 (diff)
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powerpc/pseries: Kernel DLPAR Infrastructure
The Dynamic Logical Partitioning capabilities of the powerpc pseries platform allows for the addition and removal of resources (i.e. CPU's, memory, and PCI devices) from a partition. The removal of a resource involves removing the resource's node from the device tree and then returning the resource to firmware via the rtas set-indicator call. To add a resource, it is first obtained from firmware via the rtas set-indicator call and then a new device tree node is created using the ibm,configure-coinnector rtas call and added to the device tree. This patch provides the kernel DLPAR infrastructure in a new filed named dlpar.c. The functionality provided is for acquiring and releasing a resource from firmware and the parsing of information returned from the ibm,configure-connector rtas call. Additionally this exports the pSeries reconfiguration notifier chain so that it can be invoked when device tree updates are made. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/pSeries_reconfig.h')
-rw-r--r--arch/powerpc/include/asm/pSeries_reconfig.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pSeries_reconfig.h b/arch/powerpc/include/asm/pSeries_reconfig.h
index e482e5352e69..d4b4bfa26fb3 100644
--- a/arch/powerpc/include/asm/pSeries_reconfig.h
+++ b/arch/powerpc/include/asm/pSeries_reconfig.h
@@ -17,6 +17,7 @@
#ifdef CONFIG_PPC_PSERIES
extern int pSeries_reconfig_notifier_register(struct notifier_block *);
extern void pSeries_reconfig_notifier_unregister(struct notifier_block *);
+extern struct blocking_notifier_head pSeries_reconfig_chain;
#else /* !CONFIG_PPC_PSERIES */
static inline int pSeries_reconfig_notifier_register(struct notifier_block *nb)
{
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