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Multiple updates on sleeping, vma dropping and thread suspend.

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- Updated sleeping paths such that a task is atomically put into
  a runqueue and made RUNNABLE, or removed from a runqueue and made SLEEPING.
- Modified vma dropping sources to handle both copy_on_write() and exit() cases
  in a common function.
- Added the first infrastructure to have a pager to suspend a task and wait for
  suspend completion from the scheduler.
This commit is contained in:
Bahadir Balban
2008-10-13 12:22:10 +03:00
parent f6d0a79298
commit 0db0f7e334
23 changed files with 416 additions and 200 deletions
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6
tasks/mm0/include/vm_area.h
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@@ -139,9 +139,9 @@ struct vm_object {
/* In memory representation of either a vfs file, a device. */
struct vm_file {
int openers;
struct list_head list;
unsigned long length;
unsigned int type;
struct list_head list;
struct vm_object vm_obj;
void *priv_data; /* Device pagers use to access device info */
};
@@ -230,6 +230,7 @@ struct vm_file *vm_file_alloc_init(void);
struct vm_object *vm_object_alloc_init(void);
struct vm_object *vm_object_create(void);
struct vm_file *vm_file_create(void);
int vm_file_delete(struct vm_file *f);
int vm_object_delete(struct vm_object *vmo);
void vm_object_print(struct vm_object *vmo);
@@ -254,4 +255,7 @@ static inline void task_add_vma(struct tcb *task, struct vm_area *vma)
/* Main page fault entry point */
int page_fault_handler(struct tcb *faulty_task, fault_kdata_t *fkdata);
int vma_drop_merge_delete(struct vm_area *vma, struct vm_obj_link *link);
int vma_drop_merge_delete_all(struct vm_area *vma);
#endif /* __VM_AREA_H__ */