diff options
author | Brian Gerst <brgerst@gmail.com> | 2009-01-18 15:38:58 (GMT) |
---|---|---|
committer | Tejun Heo <tj@kernel.org> | 2009-01-18 15:38:58 (GMT) |
commit | ea9279066de44053d0c20ea855bc9f4706652d84 (patch) | |
tree | 73c19b9112375ee0df8373b004105f05e1a196f4 /arch | |
parent | 92d65b2371d86d40807e1dbfdccadc4d501edcde (diff) | |
download | linux-fsl-qoriq-ea9279066de44053d0c20ea855bc9f4706652d84.tar.xz |
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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/include/asm/pda.h | 2 | ||||
-rw-r--r-- | arch/x86/include/asm/smp.h | 4 | ||||
-rw-r--r-- | arch/x86/kernel/asm-offsets_64.c | 1 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/common.c | 1 | ||||
-rw-r--r-- | arch/x86/kernel/process_32.c | 3 | ||||
-rw-r--r-- | arch/x86/kernel/setup_percpu.c | 10 | ||||
-rw-r--r-- | arch/x86/kernel/smpcommon.c | 2 |
7 files changed, 12 insertions, 11 deletions
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 @@ 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 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 @@ 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() \ ({ \ diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c index 5b821fb..cae6697 100644 --- a/arch/x86/kernel/asm-offsets_64.c +++ b/arch/x86/kernel/asm-offsets_64.c @@ -53,7 +53,6 @@ int main(void) ENTRY(oldrsp); ENTRY(pcurrent); ENTRY(irqcount); - ENTRY(cpunumber); DEFINE(pda_size, sizeof(struct x8664_pda)); BLANK(); #undef ENTRY diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index b6d7eec..4221e92 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -899,7 +899,6 @@ void __cpuinit pda_init(int cpu) load_pda_offset(cpu); - pda->cpunumber = cpu; pda->irqcount = -1; pda->kernelstack = (unsigned long)stack_thread_info() - PDA_STACKOFFSET + THREAD_SIZE; diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index 77d5468..2c00a57 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -66,9 +66,6 @@ asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task; EXPORT_PER_CPU_SYMBOL(current_task); -DEFINE_PER_CPU(int, cpu_number); -EXPORT_PER_CPU_SYMBOL(cpu_number); - /* * Return saved PC of a blocked thread. */ diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 8b53ef83..258497f 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -22,6 +22,15 @@ # define DBG(x...) #endif +/* + * Could be inside CONFIG_HAVE_SETUP_PER_CPU_AREA with other stuff but + * voyager wants cpu_number too. + */ +#ifdef CONFIG_SMP +DEFINE_PER_CPU(int, cpu_number); +EXPORT_PER_CPU_SYMBOL(cpu_number); +#endif + #ifdef CONFIG_X86_LOCAL_APIC unsigned int num_processors; unsigned disabled_cpus __cpuinitdata; @@ -193,6 +202,7 @@ void __init setup_per_cpu_areas(void) memcpy(ptr, __per_cpu_load, __per_cpu_end - __per_cpu_start); per_cpu_offset(cpu) = ptr - __per_cpu_start; per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu); + per_cpu(cpu_number, cpu) = cpu; #ifdef CONFIG_X86_64 per_cpu(irq_stack_ptr, cpu) = (char *)per_cpu(irq_stack, cpu) + IRQ_STACK_SIZE - 64; diff --git a/arch/x86/kernel/smpcommon.c b/arch/x86/kernel/smpcommon.c index 7e15781..add36b4 100644 --- a/arch/x86/kernel/smpcommon.c +++ b/arch/x86/kernel/smpcommon.c @@ -28,7 +28,5 @@ __cpuinit void init_gdt(int cpu) write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S); - - per_cpu(cpu_number, cpu) = cpu; } #endif |