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Environment is backed by a special per-task file maintained by mm0 for each task. This file is filled in by the env pager, by simple copying of env data into the faulty page upon a fault. UTCB and all anon regions (stack) could use the same scheme. Fixed IS_ERR(x) to accept negative values that are above -1000 for errors. This protects against false positives for pointers such as 0xE0000000. modified: include/l4/generic/scheduler.h modified: include/l4/macros.h modified: src/arch/arm/exception.c modified: tasks/fs0/include/linker.lds modified: tasks/libl4/src/init.c modified: tasks/libposix/shm.c new file: tasks/mm0/include/env.h modified: tasks/mm0/include/file.h new file: tasks/mm0/include/lib/addr.h deleted: tasks/mm0/include/lib/vaddr.h modified: tasks/mm0/include/task.h new file: tasks/mm0/include/utcb.h new file: tasks/mm0/src/env.c modified: tasks/mm0/src/fault.c modified: tasks/mm0/src/file.c modified: tasks/mm0/src/init.c new file: tasks/mm0/src/lib/addr.c modified: tasks/mm0/src/lib/idpool.c deleted: tasks/mm0/src/lib/vaddr.c modified: tasks/mm0/src/mmap.c modified: tasks/mm0/src/shm.c modified: tasks/mm0/src/task.c new file: tasks/mm0/src/utcb.c modified: tasks/test0/include/linker.lds
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/*
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* Scheduler and runqueue API definitions.
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#ifndef __SCHEDULER_H__
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#define __SCHEDULER_H__
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#include <l4/generic/tcb.h>
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#include INC_SUBARCH(mm.h)
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#include INC_GLUE(memory.h)
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/* Ticks per second, try ticks = 1000 + timeslice = 1 for regressed preemption test. */
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#define HZ 10
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#define TASK_TIMESLICE_DEFAULT 500
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/* #define TASK_TIMESLICE_DEFAULT (HZ/100)*/
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static inline struct ktcb *current_task(void)
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{
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register u32 stack asm("sp");
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return (struct ktcb *)(stack & (~PAGE_MASK));
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}
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#define current current_task()
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#define need_resched (current->ts_need_resched)
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/* Flags set by kernel to direct the scheduler about future task state. */
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#define __SCHED_FL_SUSPEND 1
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#define SCHED_FL_SUSPEND (1 << __SCHED_FL_SUSPEND)
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#define __SCHED_FL_RESUME 2
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#define SCHED_FL_RESUME (1 << __SCHED_FL_RESUME)
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#define __SCHED_FL_SLEEP 3
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#define SCHED_FL_SLEEP (1 << __SCHED_FL_SLEEP)
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#define SCHED_FL_MASK (SCHED_FL_SLEEP | SCHED_FL_RESUME \
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| SCHED_FL_SUSPEND)
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#define __IPC_FL_WAIT 4
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#define IPC_FL_WAIT (1 << __IPC_FL_WAIT)
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#define IPC_FL_MASK IPC_FL_WAIT
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void sched_runqueue_init(void);
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void sched_start_task(struct ktcb *task);
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void sched_resume_task(struct ktcb *task);
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void sched_suspend_task(struct ktcb *task);
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void sched_process_post_ipc(struct ktcb *, struct ktcb *);
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void sched_tell(struct ktcb *task, unsigned int flags);
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void scheduler_start(void);
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void sched_yield(void);
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void schedule(void);
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/* Asynchronous notifications to scheduler */
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void sched_notify_resume(struct ktcb *task);
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void sched_notify_sleep(struct ktcb *task);
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void sched_notify_suspend(struct ktcb *task);
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#endif /* __SCHEDULER_H__ */
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