diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 10:08:43 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 10:08:43 -0700 |
commit | 54cebc68c81eacac41a21bdfe99dc889d3882c60 (patch) | |
tree | da1d3872c6ddf208768e784bd1ea09054a81462d /arch/blackfin/include/asm/mmu_context.h | |
parent | fffdedef691a0f6fa7ca1fc0a2a508cbb49def69 (diff) | |
parent | 71de1f8a6365ea65346881e526132563d93696d1 (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (60 commits)
Blackfin arch: make sure we include the fix for SPORT hysteresis when reprogramming clocks
Blackfin arch: Fix bogus str_ident check in gpio code
Blackfin arch: AD7879 Touchscreen driver
Blackfin arch: introducing bfin_addr_dcachable
Blackfin arch: fix a typo in comments
Blackfin arch: Remove useless head file
Blackfin arch: make sure L2 start and length are always defined (fixes building on BF542)
Blackfin arch: use the Blackfin on-chip ROM to do software reset when possible
Blackfin arch: update anomaly headers to match the latest sheet
Blackfin arch: bfin_reset() is an internal reboot function ... everyone should go through machine_restart()
Blackfin arch: print out error/warning if you are running on the incorrect CPU type
Blackfin arch: remove non-bf54x ifdef logic since this file is only compiled on bf54x parts
Blackfin arch: update board defconfigs
Blackfin arch: Add optional verbose debug
Blackfin arch: emulate a TTY over the EMUDAT/JTAG interface
Blackfin arch: have is_user_addr_valid() check for overflows (like when address is -1)
Blackfin arch: ptrace - fix off-by-one check on end of memory regions
Blackfin arch: Enable framebuffer support for the BF526-EZkit TFT LCD display
Blackfin arch: flash memory map and dm9000 resources updating
Blackfin arch: early prink code still use uart core console functions to parse and set configure option string
...
Diffstat (limited to 'arch/blackfin/include/asm/mmu_context.h')
-rw-r--r-- | arch/blackfin/include/asm/mmu_context.h | 79 |
1 files changed, 42 insertions, 37 deletions
diff --git a/arch/blackfin/include/asm/mmu_context.h b/arch/blackfin/include/asm/mmu_context.h index 8529552a981..35593dda2a4 100644 --- a/arch/blackfin/include/asm/mmu_context.h +++ b/arch/blackfin/include/asm/mmu_context.h @@ -45,49 +45,12 @@ extern unsigned long l1_stack_len; extern int l1sram_free(const void*); extern void *l1sram_alloc_max(void*); -static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) -{ -} - -/* Called when creating a new context during fork() or execve(). */ -static inline int -init_new_context(struct task_struct *tsk, struct mm_struct *mm) -{ -#ifdef CONFIG_MPU - unsigned long p = __get_free_pages(GFP_KERNEL, page_mask_order); - mm->context.page_rwx_mask = (unsigned long *)p; - memset(mm->context.page_rwx_mask, 0, - page_mask_nelts * 3 * sizeof(long)); -#endif - return 0; -} - static inline void free_l1stack(void) { nr_l1stack_tasks--; if (nr_l1stack_tasks == 0) l1sram_free(l1_stack_base); } -static inline void destroy_context(struct mm_struct *mm) -{ - struct sram_list_struct *tmp; - - if (current_l1_stack_save == mm->context.l1_stack_save) - current_l1_stack_save = NULL; - if (mm->context.l1_stack_save) - free_l1stack(); - - while ((tmp = mm->context.sram_list)) { - mm->context.sram_list = tmp->next; - sram_free(tmp->addr); - kfree(tmp); - } -#ifdef CONFIG_MPU - if (current_rwx_mask == mm->context.page_rwx_mask) - current_rwx_mask = NULL; - free_pages((unsigned long)mm->context.page_rwx_mask, page_mask_order); -#endif -} static inline unsigned long alloc_l1stack(unsigned long length, unsigned long *stack_base) @@ -134,6 +97,7 @@ static inline void switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_m } #endif +#ifdef CONFIG_APP_STACK_L1 /* L1 stack switching. */ if (!next_mm->context.l1_stack_save) return; @@ -144,6 +108,7 @@ static inline void switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_m } current_l1_stack_save = next_mm->context.l1_stack_save; memcpy(l1_stack_base, current_l1_stack_save, l1_stack_len); +#endif } #ifdef CONFIG_MPU @@ -180,4 +145,44 @@ static inline void update_protections(struct mm_struct *mm) } #endif +static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) +{ +} + +/* Called when creating a new context during fork() or execve(). */ +static inline int +init_new_context(struct task_struct *tsk, struct mm_struct *mm) +{ +#ifdef CONFIG_MPU + unsigned long p = __get_free_pages(GFP_KERNEL, page_mask_order); + mm->context.page_rwx_mask = (unsigned long *)p; + memset(mm->context.page_rwx_mask, 0, + page_mask_nelts * 3 * sizeof(long)); +#endif + return 0; +} + +static inline void destroy_context(struct mm_struct *mm) +{ + struct sram_list_struct *tmp; + +#ifdef CONFIG_APP_STACK_L1 + if (current_l1_stack_save == mm->context.l1_stack_save) + current_l1_stack_save = 0; + if (mm->context.l1_stack_save) + free_l1stack(); +#endif + + while ((tmp = mm->context.sram_list)) { + mm->context.sram_list = tmp->next; + sram_free(tmp->addr); + kfree(tmp); + } +#ifdef CONFIG_MPU + if (current_rwx_mask == mm->context.page_rwx_mask) + current_rwx_mask = NULL; + free_pages((unsigned long)mm->context.page_rwx_mask, page_mask_order); +#endif +} + #endif |