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Commit 603fff54 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[PATCH] ARM SMP: TLB implementations only affect local CPU 



The existing TLB flush implementations only have an effect on
the local CPU.  Prefix them with local_.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parents 99f95e52 8b22c249

include/asm-arm/tlbflush.h

+22 −6
Original line number Diff line number Diff line
@@ -235,7 +235,7 @@ extern struct cpu_tlb_fns cpu_tlb; 


#define tlb_flag(f)	((always_tlb_flags & (f)) || (__tlb_flag & possible_tlb_flags & (f)))



static inline void flush_tlb_all(void)

static inline void local_flush_tlb_all(void)

{

	const int zero = 0;

	const unsigned int __tlb_flag = __cpu_tlb_flags;
@@ -253,7 +253,7 @@ static inline void flush_tlb_all(void) 
		asm("mcr%? p15, 0, %0, c8, c5, 0" : : "r" (zero));

}



static inline void flush_tlb_mm(struct mm_struct *mm)

static inline void local_flush_tlb_mm(struct mm_struct *mm)

{

	const int zero = 0;

	const int asid = ASID(mm);
@@ -282,7 +282,7 @@ static inline void flush_tlb_mm(struct mm_struct *mm) 
}



static inline void

flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)

local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)

{

	const int zero = 0;

	const unsigned int __tlb_flag = __cpu_tlb_flags;
@@ -313,7 +313,7 @@ flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) 
		asm("mcr%? p15, 0, %0, c8, c5, 1" : : "r" (uaddr));

}



static inline void flush_tlb_kernel_page(unsigned long kaddr)

static inline void local_flush_tlb_kernel_page(unsigned long kaddr)

{

	const int zero = 0;

	const unsigned int __tlb_flag = __cpu_tlb_flags;
@@ -384,8 +384,24 @@ static inline void clean_pmd_entry(pmd_t *pmd) 
/*

 * Convert calls to our calling convention.

 */

#define flush_tlb_range(vma,start,end)	__cpu_flush_user_tlb_range(start,end,vma)

#define flush_tlb_kernel_range(s,e)	__cpu_flush_kern_tlb_range(s,e)

#define local_flush_tlb_range(vma,start,end)	__cpu_flush_user_tlb_range(start,end,vma)

#define local_flush_tlb_kernel_range(s,e)	__cpu_flush_kern_tlb_range(s,e)



#ifndef CONFIG_SMP

#define flush_tlb_all		local_flush_tlb_all

#define flush_tlb_mm		local_flush_tlb_mm

#define flush_tlb_page		local_flush_tlb_page

#define flush_tlb_kernel_page	local_flush_tlb_kernel_page

#define flush_tlb_range		local_flush_tlb_range

#define flush_tlb_kernel_range	local_flush_tlb_kernel_range

#else

extern void flush_tlb_all(void);

extern void flush_tlb_mm(struct mm_struct *mm);

extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr);

extern void flush_tlb_kernel_page(unsigned long kaddr);

extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);

extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);

#endif



/*

 * if PG_dcache_dirty is set for the page, we need to ensure that any