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| author | Brian Gerst <brgerst@gmail.com> | 2009-01-19 00:38:58 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-01-19 00:38:58 +0900 |
| commit | ea9279066de44053d0c20ea855bc9f4706652d84 (patch) | |
| tree | 73c19b9112375ee0df8373b004105f05e1a196f4 /arch/x86/kernel/setup_percpu.c | |
| parent | 92d65b2371d86d40807e1dbfdccadc4d501edcde (diff) | |
| download | lwn-ea9279066de44053d0c20ea855bc9f4706652d84.tar.gz lwn-ea9279066de44053d0c20ea855bc9f4706652d84.zip | |
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/x86/kernel/setup_percpu.c')
| -rw-r--r-- | arch/x86/kernel/setup_percpu.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 8b53ef83c611..258497f93f4d 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; |