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x86: build fix for !CONFIG_SMP

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Move reset_lazy_tlbstate into tlb_32.c, and define noop versions of
play_dead() in process_{32,64}.c when !CONFIG_SMP.

Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Alex Nixon 2008-09-03 14:30:23 +01:00 committed by Ingo Molnar
parent 5ab6d815dc
commit 913da64b54
6 changed files with 32 additions and 16 deletions
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7
arch/x86/kernel/cpu/common.c
View File

@ -714,10 +714,3 @@ void __cpuinit cpu_init(void)
mxcsr_feature_mask_init();
}
void reset_lazy_tlbstate(void)
{
int cpu = raw_smp_processor_id();
per_cpu(cpu_tlbstate, cpu).state = 0;
per_cpu(cpu_tlbstate, cpu).active_mm = &init_mm;
}

7
arch/x86/kernel/process_32.c
View File

@ -72,6 +72,13 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return ((unsigned long *)tsk->thread.sp)[3];
}
#ifndef CONFIG_SMP
static inline void play_dead(void)
{
BUG();
}
#endif
/*
* The idle thread. There's no useful work to be
* done, so just try to conserve power and have a

7
arch/x86/kernel/process_64.c
View File

@ -85,6 +85,13 @@ void exit_idle(void)
__exit_idle();
}
#ifndef CONFIG_SMP
static inline void play_dead(void)
{
BUG();
}
#endif
/*
* The idle thread. There's no useful work to be
* done, so just try to conserve power and have a

8
arch/x86/kernel/tlb_32.c
View File

@ -241,3 +241,11 @@ void flush_tlb_all(void)
on_each_cpu(do_flush_tlb_all, NULL, 1);
}
void reset_lazy_tlbstate(void)
{
int cpu = raw_smp_processor_id();
per_cpu(cpu_tlbstate, cpu).state = 0;
per_cpu(cpu_tlbstate, cpu).active_mm = &init_mm;
}

9
include/asm-x86/smp.h
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@ -222,14 +222,5 @@ static inline int hard_smp_processor_id(void)
#endif /* CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_HOTPLUG_CPU
#ifdef CONFIG_X86_32
extern void reset_lazy_tlbstate(void);
#else
static inline void reset_lazy_tlbstate(void)
{ }
#endif /* CONFIG_X86_32 */
#endif
#endif /* __ASSEMBLY__ */
#endif

10
include/asm-x86/tlbflush.h
View File

@ -119,6 +119,10 @@ static inline void native_flush_tlb_others(const cpumask_t *cpumask,
{
}
static inline void reset_lazy_tlbstate(void)
{
}
#else /* SMP */
#include <asm/smp.h>
@ -151,6 +155,12 @@ struct tlb_state {
char __cacheline_padding[L1_CACHE_BYTES-8];
};
DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate);
void reset_lazy_tlbstate(void);
#else
static inline void reset_lazy_tlbstate(void)
{
}
#endif
#endif /* SMP */