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MN10300: SMP TLB flushing

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Implement global TLB flushing for MN10300.  This will be used by the AM34 which
is SMP capable.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Akira Takeuchi
2010-10-27 17:28:51 +01:00
committed by David Howells
parent dccbf4853a
commit 965ea4bbb9
4 changed files with 288 additions and 27 deletions
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77
arch/mn10300/include/asm/tlbflush.h
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@@ -11,6 +11,7 @@
#ifndef _ASM_TLBFLUSH_H
#define _ASM_TLBFLUSH_H
#include <linux/mm.h>
#include <asm/processor.h>
struct tlb_state {
@@ -93,39 +94,61 @@ void local_flush_tlb_page(struct mm_struct *mm, unsigned long addr)
* - flush_tlb_range(mm, start, end) flushes a range of pages
* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
*/
#define flush_tlb_all() \
do { \
preempt_disable(); \
local_flush_tlb_all(); \
preempt_enable(); \
} while (0)
#ifdef CONFIG_SMP
#define flush_tlb_mm(mm) \
do { \
preempt_disable(); \
local_flush_tlb_all(); \
preempt_enable(); \
} while (0)
#include <asm/smp.h>
#define flush_tlb_range(vma, start, end) \
do { \
unsigned long __s __attribute__((unused)) = (start); \
unsigned long __e __attribute__((unused)) = (end); \
preempt_disable(); \
local_flush_tlb_all(); \
preempt_enable(); \
} while (0)
extern void flush_tlb_all(void);
extern void flush_tlb_current_task(void);
extern void flush_tlb_mm(struct mm_struct *);
extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
#define flush_tlb() flush_tlb_current_task()
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
flush_tlb_mm(vma->vm_mm);
}
#else /* CONFIG_SMP */
static inline void flush_tlb_all(void)
{
preempt_disable();
local_flush_tlb_all();
preempt_enable();
}
static inline void flush_tlb_mm(struct mm_struct *mm)
{
preempt_disable();
local_flush_tlb_all();
preempt_enable();
}
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
preempt_disable();
local_flush_tlb_all();
preempt_enable();
}
#define flush_tlb_page(vma, addr) local_flush_tlb_page((vma)->vm_mm, addr)
#define flush_tlb() flush_tlb_all()
#define flush_tlb_kernel_range(start, end) \
do { \
unsigned long __s __attribute__((unused)) = (start); \
unsigned long __e __attribute__((unused)) = (end); \
flush_tlb_all(); \
} while (0)
#endif /* CONFIG_SMP */
#define flush_tlb_pgtables(mm, start, end) do {} while (0)
static inline void flush_tlb_kernel_range(unsigned long start,
unsigned long end)
{
flush_tlb_all();
}
static inline void flush_tlb_pgtables(struct mm_struct *mm,
unsigned long start, unsigned long end)
{
}
#endif /* _ASM_TLBFLUSH_H */