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| author | Mike Travis <travis@sgi.com> | 2007-10-16 01:24:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:42:50 -0700 |
| commit | d5a7430ddcdb598261d70f7eb1bf450b5be52085 (patch) | |
| tree | 3b94672e0dbc2bff125de3266908f1a47a17b795 /include/asm-ia64 | |
| parent | 083576112940fda783d716fd5ccc744f81667b2f (diff) | |
| download | linux-d5a7430ddcdb598261d70f7eb1bf450b5be52085.tar.gz linux-d5a7430ddcdb598261d70f7eb1bf450b5be52085.tar.bz2 linux-d5a7430ddcdb598261d70f7eb1bf450b5be52085.zip | |
Convert cpu_sibling_map to be a per cpu variable
Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu
variable. This saves sizeof(cpumask_t) * NR unused cpus. Access is mostly
from startup and CPU HOTPLUG functions.
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-ia64')
| -rw-r--r-- | include/asm-ia64/smp.h | 2 | ||||
| -rw-r--r-- | include/asm-ia64/topology.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-ia64/smp.h b/include/asm-ia64/smp.h index 6314b29e8c4d..1703c9d885bd 100644 --- a/include/asm-ia64/smp.h +++ b/include/asm-ia64/smp.h @@ -58,7 +58,7 @@ extern char no_int_routing __devinitdata; extern cpumask_t cpu_online_map; extern cpumask_t cpu_core_map[NR_CPUS]; -extern cpumask_t cpu_sibling_map[NR_CPUS]; +DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); extern int smp_num_siblings; extern int smp_num_cpucores; extern void __iomem *ipi_base_addr; diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h index 233f1caae048..2d67b72b18d0 100644 --- a/include/asm-ia64/topology.h +++ b/include/asm-ia64/topology.h @@ -112,7 +112,7 @@ void build_cpu_to_node_map(void); #define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id) #define topology_core_id(cpu) (cpu_data(cpu)->core_id) #define topology_core_siblings(cpu) (cpu_core_map[cpu]) -#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu]) +#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) #define smt_capable() (smp_num_siblings > 1) #endif |