x86: make Voyager use x86 per-cpu setup.

Impact: standardize all x86 platforms on same setup code

With the preceding changes, Voyager can use the same per-cpu setup
code as all the other x86 platforms.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5a29b792cb84542da0c4e9964d549b21cc9c41e6..d6218e6c9824163fd2c5a3f384128b68ba230686 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -133,7 +133,7 @@ config ARCH_HAS_CACHE_LINE_SIZE
        def_bool y
 
 config HAVE_SETUP_PER_CPU_AREA
-       def_bool X86_64_SMP || (X86_SMP && !X86_VOYAGER)
+       def_bool y
 
 config HAVE_CPUMASK_OF_CPU_MAP
        def_bool X86_64_SMP

diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index be77f1a1231db1a8ded39dbfd1c63dd3414317ae..599dc1cc1da84dab44cd7bae1c50b9de1f62fbc1 100644 (file)
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -35,8 +35,6 @@ EXPORT_PER_CPU_SYMBOL(cpu_number);
 DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
 EXPORT_PER_CPU_SYMBOL(this_cpu_off);
 
-#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
-
 unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
        [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET,
 };
@@ -125,6 +123,3 @@ void __init setup_per_cpu_areas(void)
        /* Setup cpu initialized, callin, callout masks */
        setup_cpu_local_masks();
 }
-
-#endif
-

diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index 96f15b09a4c59143b1cbca1cbda5b422f27a639a..dd82f2052f34270b181f8de1bfcca1986a29ec24 100644 (file)
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/arch/x86/mach-voyager/voyager_smp.c
@@ -531,7 +531,6 @@ static void __init do_boot_cpu(__u8 cpu)
        stack_start.sp = (void *)idle->thread.sp;
 
        init_gdt(cpu);
-       per_cpu(this_cpu_off, cpu) = __per_cpu_offset[cpu];
        per_cpu(current_task, cpu) = idle;
        early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
        irq_ctx_init(cpu);
@@ -1749,7 +1748,6 @@ static void __init voyager_smp_prepare_cpus(unsigned int max_cpus)
 static void __cpuinit voyager_smp_prepare_boot_cpu(void)
 {
        init_gdt(smp_processor_id());
-       per_cpu(this_cpu_off, cpu) = __per_cpu_offset[cpu];
        switch_to_new_gdt();
 
        cpu_set(smp_processor_id(), cpu_online_map);
@@ -1782,7 +1780,6 @@ static void __init voyager_smp_cpus_done(unsigned int max_cpus)
 void __init smp_setup_processor_id(void)
 {
        current_thread_info()->cpu = hard_smp_processor_id();
-       percpu_write(cpu_number, hard_smp_processor_id());
 }
 
 static void voyager_send_call_func(cpumask_t callmask)