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authorMike Travis <travis@sgi.com>2008-03-31 08:41:55 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-19 19:44:58 +0200
commitaa6b54461cc5c0019b9d792adf3176b444c10763 (patch)
tree069955d970b078105dcae6706a9e97c5503900df
parentd18d00f5dbcd1a95811617e9812cf0560bd465ee (diff)
asm-generic: add node_to_cpumask_ptr macro
Create a simple macro to always return a pointer to the node_to_cpumask(node) value. This relies on compiler optimization to remove the extra indirection: #define node_to_cpumask_ptr(v, node) \ cpumask_t _##v = node_to_cpumask(node), *v = &_##v For those systems with a large cpumask size, then a true pointer to the array element can be used: #define node_to_cpumask_ptr(v, node) \ cpumask_t *v = &(node_to_cpumask_map[node]) A node_to_cpumask_ptr_next() macro is provided to access another node_to_cpumask value. The other change is to always include asm-generic/topology.h moving the ifdef CONFIG_NUMA to this same file. Note: there are no references to either of these new macros in this patch, only the definition. Based on 2.6.25-rc5-mm1 # alpha Cc: Richard Henderson <rth@twiddle.net> # fujitsu Cc: David Howells <dhowells@redhat.com> # ia64 Cc: Tony Luck <tony.luck@intel.com> # powerpc Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> # sparc Cc: David S. Miller <davem@davemloft.net> Cc: William L. Irwin <wli@holomorphy.com> # x86 Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/asm-alpha/topology.h3
-rw-r--r--include/asm-frv/topology.h4
-rw-r--r--include/asm-generic/topology.h14
-rw-r--r--include/asm-ia64/topology.h5
-rw-r--r--include/asm-powerpc/topology.h3
-rw-r--r--include/asm-x86/topology.h15
6 files changed, 35 insertions, 9 deletions
diff --git a/include/asm-alpha/topology.h b/include/asm-alpha/topology.h
index 420ccde6b91..149532e162c 100644
--- a/include/asm-alpha/topology.h
+++ b/include/asm-alpha/topology.h
@@ -41,8 +41,7 @@ static inline cpumask_t node_to_cpumask(int node)
#define pcibus_to_cpumask(bus) (cpu_online_map)
-#else /* CONFIG_NUMA */
-# include <asm-generic/topology.h>
#endif /* !CONFIG_NUMA */
+# include <asm-generic/topology.h>
#endif /* _ASM_ALPHA_TOPOLOGY_H */
diff --git a/include/asm-frv/topology.h b/include/asm-frv/topology.h
index abe7298742a..94272435270 100644
--- a/include/asm-frv/topology.h
+++ b/include/asm-frv/topology.h
@@ -5,10 +5,8 @@
#error NUMA not supported yet
-#else /* !CONFIG_NUMA */
+#endif /* CONFIG_NUMA */
#include <asm-generic/topology.h>
-#endif /* CONFIG_NUMA */
-
#endif /* _ASM_TOPOLOGY_H */
diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 342a2a0105c..a6aea79bca4 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -27,6 +27,8 @@
#ifndef _ASM_GENERIC_TOPOLOGY_H
#define _ASM_GENERIC_TOPOLOGY_H
+#ifndef CONFIG_NUMA
+
/* Other architectures wishing to use this simple topology API should fill
in the below functions as appropriate in their own <asm/topology.h> file. */
#ifndef cpu_to_node
@@ -52,4 +54,16 @@
)
#endif
+#endif /* CONFIG_NUMA */
+
+/* returns pointer to cpumask for specified node */
+#ifndef node_to_cpumask_ptr
+
+#define node_to_cpumask_ptr(v, node) \
+ cpumask_t _##v = node_to_cpumask(node), *v = &_##v
+
+#define node_to_cpumask_ptr_next(v, node) \
+ _##v = node_to_cpumask(node)
+#endif
+
#endif /* _ASM_GENERIC_TOPOLOGY_H */
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index 2d67b72b18d..f929dde8534 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -116,6 +116,11 @@ void build_cpu_to_node_map(void);
#define smt_capable() (smp_num_siblings > 1)
#endif
+#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
+ CPU_MASK_ALL : \
+ node_to_cpumask(pcibus_to_node(bus)) \
+ )
+
#include <asm-generic/topology.h>
#endif /* _ASM_IA64_TOPOLOGY_H */
diff --git a/include/asm-powerpc/topology.h b/include/asm-powerpc/topology.h
index ca23b681ad0..100c6fbfc58 100644
--- a/include/asm-powerpc/topology.h
+++ b/include/asm-powerpc/topology.h
@@ -96,11 +96,10 @@ static inline void sysfs_remove_device_from_node(struct sys_device *dev,
{
}
+#endif /* CONFIG_NUMA */
#include <asm-generic/topology.h>
-#endif /* CONFIG_NUMA */
-
#ifdef CONFIG_SMP
#include <asm/cputable.h>
#define smt_capable() (cpu_has_feature(CPU_FTR_SMT))
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index 81a29eb08ac..b167ca90f96 100644
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -88,6 +88,17 @@ static inline int cpu_to_node(int cpu)
#endif
return per_cpu(x86_cpu_to_node_map, cpu);
}
+
+#ifdef CONFIG_NUMA
+
+/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
+#define node_to_cpumask_ptr(v, node) \
+ cpumask_t *v = &(node_to_cpumask_map[node])
+
+#define node_to_cpumask_ptr_next(v, node) \
+ v = &(node_to_cpumask_map[node])
+#endif
+
#endif /* CONFIG_X86_64 */
/*
@@ -174,10 +185,10 @@ extern int __node_distance(int, int);
#else /* CONFIG_NUMA */
-#include <asm-generic/topology.h>
-
#endif
+#include <asm-generic/topology.h>
+
extern cpumask_t cpu_coregroup_map(int cpu);
#ifdef ENABLE_TOPO_DEFINES