xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sparc32: centralize all mmu context handling in srmmu.c

Browse Source 
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sam Ravnborg
2012-07-26 11:02:24 +00:00
committed by David S. Miller
parent 59b00c792f
commit b585e8551b
6 changed files with 63 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/sparc/include/asm/mmu_context_32.h
View File

@@ -9,14 +9,12 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}
/*
* Initialize a new mmu context. This is invoked when a new
/* Initialize a new mmu context. This is invoked when a new
* address space instance (unique or shared) is instantiated.
*/
#define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0)
int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
/*
* Destroy a dead context. This occurs when mmput drops the
/* Destroy a dead context. This occurs when mmput drops the
* mm_users count to zero, the mmaps have been released, and
* all the page tables have been flushed. Our job is to destroy
* any remaining processor-specific state.

32
arch/sparc/include/asm/pgtable_32.h
View File

@@ -79,8 +79,6 @@ extern unsigned long ptr_in_current_pgd;
#define __S110 PAGE_SHARED
#define __S111 PAGE_SHARED
extern int num_contexts;
/* First physical page can be anywhere, the following is needed so that
* va-->pa and vice versa conversions work properly without performance
* hit for all __pa()/__va() operations.
@@ -399,36 +397,6 @@ static inline pte_t pgoff_to_pte(unsigned long pgoff)
*/
#define PTE_FILE_MAX_BITS 24
/*
*/
struct ctx_list {
struct ctx_list *next;
struct ctx_list *prev;
unsigned int ctx_number;
struct mm_struct *ctx_mm;
};
extern struct ctx_list *ctx_list_pool; /* Dynamically allocated */
extern struct ctx_list ctx_free; /* Head of free list */
extern struct ctx_list ctx_used; /* Head of used contexts list */
#define NO_CONTEXT -1
static inline void remove_from_ctx_list(struct ctx_list *entry)
{
entry->next->prev = entry->prev;
entry->prev->next = entry->next;
}
static inline void add_to_ctx_list(struct ctx_list *head, struct ctx_list *entry)
{
entry->next = head;
(entry->prev = head->prev)->next = entry;
head->prev = entry;
}
#define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry)
#define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry)
static inline unsigned long
__get_phys (unsigned long addr)
{