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authorNathan Fontenot <nfont@linux.vnet.ibm.com>2013-04-24 06:07:39 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-04-26 16:08:26 +1000
commite04fa61214a3e586282490af7e1b023522c1472a (patch)
tree44efd1187b1b9d77341cec4b80c4355a36a73afb /arch/powerpc/include/asm/topology.h
parent1b1218d32efdc81134eeb908935a18659cb3d9d7 (diff)
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 <nfont@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/topology.h')
-rw-r--r--arch/powerpc/include/asm/topology.h5
1 files changed, 5 insertions, 0 deletions
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 <asm-generic/topology.h>