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Multiple updates on sleeping, vma dropping and thread suspend.

Browse Source 
- 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
Download Patch File Download Diff File Expand all files Collapse all files

2
tasks/mm0/include/task.h
View File

@@ -121,10 +121,12 @@ int task_setup_regions(struct vm_file *file, struct tcb *task,
int task_setup_registers(struct tcb *task, unsigned int pc,
unsigned int sp, l4id_t pager);
struct tcb *tcb_alloc_init(unsigned int flags);
int tcb_destroy(struct tcb *task);
int task_exec(struct vm_file *f, unsigned long task_region_start,
unsigned long task_region_end, struct task_ids *ids);
int task_start(struct tcb *task, struct task_ids *ids);
int copy_tcb(struct tcb *to, struct tcb *from, unsigned int flags);
int task_release_vmas(struct task_vma_head *vma_head);
struct tcb *task_create(struct tcb *orig,
struct task_ids *ids,
unsigned int ctrl_flags,

6
tasks/mm0/include/vm_area.h
View File

@@ -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__ */