From b6278470b7cdbf2bf6ba7345130d83924451a51a Mon Sep 17 00:00:00 2001 From: Mike Travis Date: Fri, 19 Oct 2007 20:35:03 +0200 Subject: x86: convert cpu_llc_id to be a per cpu variable Convert cpu_llc_id from a static array sized by NR_CPUS to a per_cpu variable. This saves sizeof(cpu_llc_id) * NR unused cpus. Access is mostly from startup and CPU HOTPLUG functions. Note there's an additional change of the type of cpu_llc_id from int to u8 for ARCH i386 to correspond with the same type in ARCH x86_64. Signed-off-by: Mike Travis Cc: Andi Kleen Cc: Christoph Lameter Cc: "Siddha, Suresh B" Signed-off-by: Andrew Morton Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/processor_32.h | 6 +++++- include/asm-x86/smp_64.h | 3 ++- 2 files changed, 7 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-x86/processor_32.h b/include/asm-x86/processor_32.h index 83800e7496ee..565b6fc5f5b4 100644 --- a/include/asm-x86/processor_32.h +++ b/include/asm-x86/processor_32.h @@ -110,7 +110,11 @@ extern struct cpuinfo_x86 cpu_data[]; #define current_cpu_data boot_cpu_data #endif -extern int cpu_llc_id[NR_CPUS]; +/* + * the following now lives in the per cpu area: + * extern int cpu_llc_id[NR_CPUS]; + */ +DECLARE_PER_CPU(u8, cpu_llc_id); extern char ignore_fpu_irq; void __init cpu_detect(struct cpuinfo_x86 *c); diff --git a/include/asm-x86/smp_64.h b/include/asm-x86/smp_64.h index f1545704e24e..6f0e0273b646 100644 --- a/include/asm-x86/smp_64.h +++ b/include/asm-x86/smp_64.h @@ -49,7 +49,7 @@ extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *), */ DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); DECLARE_PER_CPU(cpumask_t, cpu_core_map); -extern u8 cpu_llc_id[NR_CPUS]; +DECLARE_PER_CPU(u8, cpu_llc_id); #define SMP_TRAMPOLINE_BASE 0x6000 @@ -121,6 +121,7 @@ static __inline int logical_smp_processor_id(void) #ifdef CONFIG_SMP #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) #else +extern unsigned int boot_cpu_id; #define cpu_physical_id(cpu) boot_cpu_id #endif /* !CONFIG_SMP */ #endif -- cgit v1.2.1