x86-64: Move cpu number from PDA to per-cpu and consolidate with 32-bit.
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>
diff --git a/arch/x86/include/asm/pda.h b/arch/x86/include/asm/pda.h
index 09965f7..668d5a5 100644
--- a/arch/x86/include/asm/pda.h
+++ b/arch/x86/include/asm/pda.h
@@ -16,7 +16,7 @@
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
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index c7bbbbe..68636e7 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -25,9 +25,7 @@
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 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() \
({ \