diff options
Diffstat (limited to 'sys/powerpc/powerpc/mmu_oea.c')
| -rw-r--r-- | sys/powerpc/powerpc/mmu_oea.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/sys/powerpc/powerpc/mmu_oea.c b/sys/powerpc/powerpc/mmu_oea.c index bd15689..8802cfb 100644 --- a/sys/powerpc/powerpc/mmu_oea.c +++ b/sys/powerpc/powerpc/mmu_oea.c @@ -1532,13 +1532,17 @@ pmap_remove_pages(pmap_t pm, vm_offset_t sva, vm_offset_t eva) pmap_remove(pm, sva, eva); } +#ifndef KSTACK_MAX_PAGES +#define KSTACK_MAX_PAGES 32 +#endif + /* * Create the kernel stack and pcb for a new thread. * This routine directly affects the fork perf for a process and * create performance for a thread. */ void -pmap_new_thread(struct thread *td) +pmap_new_thread(struct thread *td, int pages) { vm_object_t ksobj; vm_offset_t ks; @@ -1548,21 +1552,27 @@ pmap_new_thread(struct thread *td) /* * Allocate object for the kstack. */ - ksobj = vm_object_allocate(OBJT_DEFAULT, KSTACK_PAGES); + ksobj = vm_object_allocate(OBJT_DEFAULT, pages); td->td_kstack_obj = ksobj; /* * Get a kernel virtual address for the kstack for this thread. */ ks = kmem_alloc_nofault(kernel_map, - (KSTACK_PAGES + KSTACK_GUARD_PAGES) * PAGE_SIZE); + (pages + KSTACK_GUARD_PAGES) * PAGE_SIZE); if (ks == 0) panic("pmap_new_thread: kstack allocation failed"); TLBIE(ks); ks += KSTACK_GUARD_PAGES * PAGE_SIZE; td->td_kstack = ks; - for (i = 0; i < KSTACK_PAGES; i++) { + /* + * Knowing the number of pages allocated is useful when you + * want to deallocate them. + */ + td->td_kstack_pages = pages; + + for (i = 0; i < pages; i++) { /* * Get a kernel stack page. */ @@ -1587,6 +1597,18 @@ pmap_dispose_thread(struct thread *td) } void +pmap_new_altkstack(struct thread *td, int pages) +{ + TODO; +} + +void +pmap_dispose_altkstack(struct thread *td) +{ + TODO; +} + +void pmap_swapin_thread(struct thread *td) { TODO; |
