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| author | Mike Travis <travis@sgi.com> | 2008-05-12 21:21:12 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 11:31:24 +0200 |
| commit | 9f248bde9d47cc177011198c9a15fb339b9f3215 (patch) | |
| tree | a6bb5bff1d8d786370b061eeb0958b413b941d41 /include/asm-x86/topology.h | |
| parent | 7891a24e1ee50c96896c0cf7da216a8e7b573ca5 (diff) | |
| download | linux-9f248bde9d47cc177011198c9a15fb339b9f3215.tar.gz linux-9f248bde9d47cc177011198c9a15fb339b9f3215.tar.bz2 linux-9f248bde9d47cc177011198c9a15fb339b9f3215.zip | |
x86: remove the static 256k node_to_cpumask_map
* Consolidate node_to_cpumask operations and remove the 256k
byte node_to_cpumask_map. This is done by allocating the
node_to_cpumask_map array after the number of possible nodes
(nr_node_ids) is known.
* Debug printouts when CONFIG_DEBUG_PER_CPU_MAPS is active have
been increased. It now shows faults when calling node_to_cpumask()
and node_to_cpumask_ptr().
For inclusion into sched-devel/latest tree.
Based on:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
+ sched-devel/latest .../mingo/linux-2.6-sched-devel.git
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/topology.h')
| -rw-r--r-- | include/asm-x86/topology.h | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h index c0e6ff7671ea..1f97758de4ab 100644 --- a/include/asm-x86/topology.h +++ b/include/asm-x86/topology.h @@ -57,10 +57,16 @@ static inline int cpu_to_node(int cpu) } #define early_cpu_to_node(cpu) cpu_to_node(cpu) +/* Returns a bitmask of CPUs on Node 'node'. */ +static inline cpumask_t node_to_cpumask(int node) +{ + return node_to_cpumask_map[node]; +} + #else /* CONFIG_X86_64 */ /* Mappings between node number and cpus on that node. */ -extern cpumask_t node_to_cpumask_map[]; +extern cpumask_t *node_to_cpumask_map; /* Mappings between logical cpu number and node number */ DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); @@ -104,7 +110,6 @@ static inline cpumask_t node_to_cpumask(int node) } #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */ -#endif /* CONFIG_X86_64 */ /* Replace default node_to_cpumask_ptr with optimized version */ #define node_to_cpumask_ptr(v, node) \ @@ -113,12 +118,7 @@ static inline cpumask_t node_to_cpumask(int node) #define node_to_cpumask_ptr_next(v, node) \ v = _node_to_cpumask_ptr(node) -/* Returns the number of the first CPU on Node 'node'. */ -static inline int node_to_first_cpu(int node) -{ - node_to_cpumask_ptr(mask, node); - return first_cpu(*mask); -} +#endif /* CONFIG_X86_64 */ /* * Returns the number of the node containing Node 'node'. This @@ -204,6 +204,15 @@ static inline int node_to_first_cpu(int node) #include <asm-generic/topology.h> +#ifdef CONFIG_NUMA +/* Returns the number of the first CPU on Node 'node'. */ +static inline int node_to_first_cpu(int node) +{ + node_to_cpumask_ptr(mask, node); + return first_cpu(*mask); +} +#endif + extern cpumask_t cpu_coregroup_map(int cpu); #ifdef ENABLE_TOPO_DEFINES |