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x86-64: Move cpu number from PDA to per-cpu and consolidate with 32-bit.

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tj: moved cpu_number definition out of CONFIG_HAVE_SETUP_PER_CPU_AREA
    for voyager.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Brian Gerst
2009-01-19 00:38:58 +09:00
committed by Tejun Heo
parent 92d65b2371
commit ea9279066d
7 changed files with 12 additions and 11 deletions
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2
arch/x86/include/asm/pda.h
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@@ -16,7 +16,7 @@ struct x8664_pda {
unsigned long kernelstack; /* 16 top of kernel stack for current */
unsigned long oldrsp; /* 24 user rsp for system call */
int irqcount; /* 32 Irq nesting counter. Starts -1 */
unsigned int cpunumber; /* 36 Logical CPU number */
unsigned int unused6; /* 36 was cpunumber */
#ifdef CONFIG_CC_STACKPROTECTOR
unsigned long stack_canary; /* 40 stack canary value */
/* gcc-ABI: this canary MUST be at

4
arch/x86/include/asm/smp.h
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@@ -25,9 +25,7 @@ extern unsigned int num_processors;
DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
DECLARE_PER_CPU(u16, cpu_llc_id);
#ifdef CONFIG_X86_32
DECLARE_PER_CPU(int, cpu_number);
#endif
static inline struct cpumask *cpu_sibling_mask(int cpu)
{
@@ -164,7 +162,7 @@ extern unsigned disabled_cpus __cpuinitdata;
extern int safe_smp_processor_id(void);
#elif defined(CONFIG_X86_64_SMP)
#define raw_smp_processor_id() read_pda(cpunumber)
#define raw_smp_processor_id() (percpu_read(cpu_number))
#define stack_smp_processor_id() \
({ \