From d5a7430ddcdb598261d70f7eb1bf450b5be52085 Mon Sep 17 00:00:00 2001 From: Mike Travis Date: Tue, 16 Oct 2007 01:24:05 -0700 Subject: 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 Cc: Andi Kleen Cc: Christoph Lameter Cc: "Siddha, Suresh B" Cc: "David S. Miller" Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: "Luck, Tony" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-x86/smp_64.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/asm-x86/smp_64.h') diff --git a/include/asm-x86/smp_64.h b/include/asm-x86/smp_64.h index 65f844864415..f5bcee1c0927 100644 --- a/include/asm-x86/smp_64.h +++ b/include/asm-x86/smp_64.h @@ -38,12 +38,14 @@ extern void unlock_ipi_call_lock(void); extern int smp_num_siblings; extern void smp_send_reschedule(int cpu); -extern cpumask_t cpu_sibling_map[NR_CPUS]; /* - * cpu_core_map lives in a per cpu area + * cpu_sibling_map and cpu_core_map now live + * in the per cpu area * + * extern cpumask_t cpu_sibling_map[NR_CPUS]; * extern cpumask_t cpu_core_map[NR_CPUS]; */ +DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); DECLARE_PER_CPU(cpumask_t, cpu_core_map); extern u8 cpu_llc_id[NR_CPUS]; -- cgit v1.2.3-59-g8ed1b