diff options
| author | Mike Travis <travis@sgi.com> | 2007-10-19 20:35:03 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-19 20:35:03 +0200 |
| commit | b6278470b7cdbf2bf6ba7345130d83924451a51a (patch) | |
| tree | 935ed13ace9c4170ec886c0c7a9f34dbbec15844 /include | |
| parent | 71fff5e6ca1b738ac4742580e4c0ff79d906f6c8 (diff) | |
| download | op-kernel-dev-b6278470b7cdbf2bf6ba7345130d83924451a51a.zip op-kernel-dev-b6278470b7cdbf2bf6ba7345130d83924451a51a.tar.gz | |
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 <travis@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/processor_32.h | 6 | ||||
| -rw-r--r-- | include/asm-x86/smp_64.h | 3 |
2 files changed, 7 insertions, 2 deletions
diff --git a/include/asm-x86/processor_32.h b/include/asm-x86/processor_32.h index 83800e7..565b6fc 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 f154570..6f0e027 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 |
