diff options
| author | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 15:36:37 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 15:36:37 +0100 |
| commit | 2fc2991175bf77395e6b15fe6b2304d3bf72da40 (patch) | |
| tree | b0ff38c09240e7c00e1577d447ebe89143d752dc /arch/um/kernel/process_kern.c | |
| parent | 8b491d750885ebe8e7d385ce4186c85957d67123 (diff) | |
| parent | 7015faa7df829876a0f931cd18aa6d7c24a1b581 (diff) | |
Merge branch 'master' of /home/tglx/work/mtd/git/linux-2.6.git/
Diffstat (limited to 'arch/um/kernel/process_kern.c')
| -rw-r--r-- | arch/um/kernel/process_kern.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c index c23d8a08d0ff..34b54a3e2132 100644 --- a/arch/um/kernel/process_kern.c +++ b/arch/um/kernel/process_kern.c @@ -80,9 +80,10 @@ void free_stack(unsigned long stack, int order) unsigned long alloc_stack(int order, int atomic) { unsigned long page; - int flags = GFP_KERNEL; + gfp_t flags = GFP_KERNEL; - if(atomic) flags |= GFP_ATOMIC; + if (atomic) + flags = GFP_ATOMIC; page = __get_free_pages(flags, order); if(page == 0) return(0); @@ -113,8 +114,23 @@ void set_current(void *t) void *_switch_to(void *prev, void *next, void *last) { - return(CHOOSE_MODE(switch_to_tt(prev, next), - switch_to_skas(prev, next))); + struct task_struct *from = prev; + struct task_struct *to= next; + + to->thread.prev_sched = from; + set_current(to); + + do { + current->thread.saved_task = NULL ; + CHOOSE_MODE_PROC(switch_to_tt, switch_to_skas, prev, next); + if(current->thread.saved_task) + show_regs(&(current->thread.regs)); + next= current->thread.saved_task; + prev= current; + } while(current->thread.saved_task); + + return(current->thread.prev_sched); + } void interrupt_end(void) @@ -206,6 +222,7 @@ void *um_virt_to_phys(struct task_struct *task, unsigned long addr, pud_t *pud; pmd_t *pmd; pte_t *pte; + pte_t ptent; if(task->mm == NULL) return(ERR_PTR(-EINVAL)); @@ -222,12 +239,13 @@ void *um_virt_to_phys(struct task_struct *task, unsigned long addr, return(ERR_PTR(-EINVAL)); pte = pte_offset_kernel(pmd, addr); - if(!pte_present(*pte)) + ptent = *pte; + if(!pte_present(ptent)) return(ERR_PTR(-EINVAL)); if(pte_out != NULL) - *pte_out = *pte; - return((void *) (pte_val(*pte) & PAGE_MASK) + (addr & ~PAGE_MASK)); + *pte_out = ptent; + return((void *) (pte_val(ptent) & PAGE_MASK) + (addr & ~PAGE_MASK)); } char *current_cmd(void) |