diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1997-09-12 01:29:55 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 1997-09-12 01:29:55 +0000 |
| commit | 545f435ebcfd94a1e7c20b46efe81b4d6ac4e698 (patch) | |
| tree | e9ce4bc598d06374bda906f18365984bf22a526a /include/asm-sparc64/mmu_context.h | |
| parent | 4291a610eef89d0d5c69d9a10ee6560e1aa36c74 (diff) | |
Merge with Linux 2.1.55. More bugfixes and goodies from my private
CVS archive.
Diffstat (limited to 'include/asm-sparc64/mmu_context.h')
| -rw-r--r-- | include/asm-sparc64/mmu_context.h | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h index 7e7aa0433..53745626e 100644 --- a/include/asm-sparc64/mmu_context.h +++ b/include/asm-sparc64/mmu_context.h @@ -1,4 +1,4 @@ -/* $Id: mmu_context.h,v 1.17 1997/07/13 19:13:39 davem Exp $ */ +/* $Id: mmu_context.h,v 1.19 1997/08/07 02:54:08 davem Exp $ */ #ifndef __SPARC64_MMU_CONTEXT_H #define __SPARC64_MMU_CONTEXT_H @@ -11,20 +11,33 @@ #ifndef __ASSEMBLY__ -#define destroy_context(mm) do { } while(0) - extern unsigned long tlb_context_cache; #define CTX_VERSION_SHIFT PAGE_SHIFT #define CTX_VERSION_MASK ((~0UL) << CTX_VERSION_SHIFT) #define CTX_FIRST_VERSION ((1UL << CTX_VERSION_SHIFT) + 1UL) -extern void get_new_mmu_context(struct mm_struct *mm, unsigned long ctx); +extern void get_new_mmu_context(struct mm_struct *mm, unsigned long *ctx); -/* Initialize the context related info for a new mm_struct +/* Initialize/destroy the context related info for a new mm_struct * instance. */ -#define init_new_context(mm) get_new_mmu_context((mm), tlb_context_cache) +#define init_new_context(mm) ((mm)->context = NO_CONTEXT) +#define destroy_context(mm) ((mm)->context = NO_CONTEXT) + +#ifdef __SMP__ +#define LOCAL_FLUSH_PENDING(cpu) \ + ((cpu_data[(cpu)].last_tlbversion_seen ^ tlb_context_cache) & CTX_VERSION_MASK) +#define DO_LOCAL_FLUSH(cpu) do { __flush_tlb_all(); \ + cpu_data[cpu].last_tlbversion_seen = \ + tlb_context_cache & CTX_VERSION_MASK; \ + } while(0) +#else +#define LOCAL_FLUSH_PENDING(cpu) 0 +#define DO_LOCAL_FLUSH(cpu) do { __flush_tlb_all(); } while(0) +#endif + +extern void __flush_tlb_all(void); extern __inline__ void get_mmu_context(struct task_struct *tsk) { @@ -32,11 +45,13 @@ extern __inline__ void get_mmu_context(struct task_struct *tsk) struct mm_struct *mm = tsk->mm; flushw_user(); + if(LOCAL_FLUSH_PENDING(current->processor)) + DO_LOCAL_FLUSH(current->processor); if(!(tsk->tss.flags & SPARC_FLAG_KTHREAD) && !(tsk->flags & PF_EXITING)) { unsigned long ctx = tlb_context_cache; if((mm->context ^ ctx) & CTX_VERSION_MASK) - get_new_mmu_context(mm, ctx); + get_new_mmu_context(mm, &tlb_context_cache); /* Don't worry, set_fs() will restore it... */ tsk->tss.ctx = (tsk->tss.current_ds ? |