Release 4.9 arch/parisc/include/asm/mmu_context.h
#ifndef __PARISC_MMU_CONTEXT_H
#define __PARISC_MMU_CONTEXT_H
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/atomic.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm-generic/mm_hooks.h>
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}
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/* on PA-RISC, we actually have enough contexts to justify an allocator
* for them. prumpf */
extern unsigned long alloc_sid(void);
extern void free_sid(unsigned long);
static inline int
init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
BUG_ON(atomic_read(&mm->mm_users) != 1);
mm->context = alloc_sid();
return 0;
}
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| andrew morton | andrew morton | 3 | 7.50% | 1 | 33.33% |
| Total | 40 | 100.00% | 3 | 100.00% |
static inline void
destroy_context(struct mm_struct *mm)
{
free_sid(mm->context);
mm->context = 0;
}
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static inline unsigned long __space_to_prot(mm_context_t context)
{
#if SPACEID_SHIFT == 0
return context << 1;
#else
return context >> (SPACEID_SHIFT - 1);
#endif
}
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| matthew wilcox | matthew wilcox | 23 | 67.65% | 1 | 33.33% |
| kyle mcmartin | kyle mcmartin | 11 | 32.35% | 2 | 66.67% |
| Total | 34 | 100.00% | 3 | 100.00% |
static inline void load_context(mm_context_t context)
{
mtsp(context, 3);
mtctl(__space_to_prot(context), 8);
}
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| kyle mcmartin | kyle mcmartin | 22 | 81.48% | 1 | 50.00% |
| matthew wilcox | matthew wilcox | 5 | 18.52% | 1 | 50.00% |
| Total | 27 | 100.00% | 2 | 100.00% |
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
{
if (prev != next) {
mtctl(__pa(next->pgd), 25);
load_context(next->context);
}
}
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| Total | 49 | 100.00% | 2 | 100.00% |
#define deactivate_mm(tsk,mm) do { } while (0)
static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
{
/*
* Activate_mm is our one chance to allocate a space id
* for a new mm created in the exec path. There's also
* some lazy tlb stuff, which is currently dead code, but
* we only allocate a space id if one hasn't been allocated
* already, so we should be OK.
*/
BUG_ON(next == &init_mm); /* Should never happen */
if (next->context == 0)
next->context = alloc_sid();
switch_mm(prev,next,current);
}
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#endif
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| kyle mcmartin | kyle mcmartin | 33 | 11.22% | 2 | 22.22% |
| linus torvalds | linus torvalds | 9 | 3.06% | 1 | 11.11% |
| andrew morton | andrew morton | 6 | 2.04% | 1 | 11.11% |
| alexey dobriyan | alexey dobriyan | 3 | 1.02% | 1 | 11.11% |
| jeremy fitzhardinge | jeremy fitzhardinge | 3 | 1.02% | 1 | 11.11% |
| arun sharma | arun sharma | 1 | 0.34% | 1 | 11.11% |
| Total | 294 | 100.00% | 9 | 100.00% |