From e04fa61214a3e586282490af7e1b023522c1472a Mon Sep 17 00:00:00 2001 From: Nathan Fontenot Date: Wed, 24 Apr 2013 06:07:39 +0000 Subject: powerpc/pseries: Add /proc interface to control topology updates There are instances in which we do not want topology updates to occur. In order to allow this a /proc interface (/proc/powerpc/topology_updates) is introduced so that topology updates can be enabled and disabled. This patch also adds a prrn_is_enabled() call so that PRRN events are handled in the kernel only if topology updating is enabled. Signed-off-by: Nathan Fontenot Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/topology.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/powerpc/include/asm') diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h index 852ed1b384f6..161ab662843b 100644 --- a/arch/powerpc/include/asm/topology.h +++ b/arch/powerpc/include/asm/topology.h @@ -71,6 +71,7 @@ static inline void sysfs_remove_device_from_node(struct device *dev, #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR) extern int start_topology_update(void); extern int stop_topology_update(void); +extern int prrn_is_enabled(void); #else static inline int start_topology_update(void) { @@ -80,6 +81,10 @@ static inline int stop_topology_update(void) { return 0; } +static inline int prrn_is_enabled(void) +{ + return 0; +} #endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */ #include -- cgit v1.2.3