projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6bc9a396 CL |
1 | #ifndef _ASM_SCORE_THREAD_INFO_H |
| 2 | #define _ASM_SCORE_THREAD_INFO_H | |
| 3 | ||
| 4 | #ifdef __KERNEL__ | |
| 5 | ||
| 6 | #define KU_MASK 0x08 | |
| 7 | #define KU_USER 0x08 | |
| 8 | #define KU_KERN 0x00 | |
| 9 | ||
| 0dab1006 TA |
10 | #include <asm/page.h> |
| 11 | #include <linux/const.h> | |
| 12 | ||
| 13 | /* thread information allocation */ | |
| 14 | #define THREAD_SIZE_ORDER (1) | |
| 15 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) | |
| 16 | #define THREAD_MASK (THREAD_SIZE - _AC(1,UL)) | |
| 17 | #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR | |
| 18 | ||
| 6bc9a396 CL |
19 | #ifndef __ASSEMBLY__ |
| 20 | ||
| 21 | #include <asm/processor.h> | |
| 22 | ||
| 23 | /* | |
| 24 | * low level task data that entry.S needs immediate access to | |
| 25 | * - this struct should fit entirely inside of one cache line | |
| 26 | * - this struct shares the supervisor stack pages | |
| 27 | * - if the contents of this structure are changed, the assembly constants | |
| 28 | * must also be changed | |
| 29 | */ | |
| 30 | struct thread_info { | |
| 31 | struct task_struct *task; /* main task structure */ | |
| 32 | struct exec_domain *exec_domain; /* execution domain */ | |
| 33 | unsigned long flags; /* low level flags */ | |
| 34 | unsigned long tp_value; /* thread pointer */ | |
| 35 | __u32 cpu; /* current CPU */ | |
| 36 | ||
| 37 | /* 0 => preemptable, < 0 => BUG */ | |
| 38 | int preempt_count; | |
| 39 | ||
| 40 | /* | |
| 41 | * thread address space: | |
| 42 | * 0-0xBFFFFFFF for user-thead | |
| 43 | * 0-0xFFFFFFFF for kernel-thread | |
| 44 | */ | |
| 45 | mm_segment_t addr_limit; | |
| 46 | struct restart_block restart_block; | |
| 47 | struct pt_regs *regs; | |
| 48 | }; | |
| 49 | ||
| 50 | /* | |
| 51 | * macros/functions for gaining access to the thread information structure | |
| 52 | * | |
| 53 | * preempt_count needs to be 1 initially, until the scheduler is functional. | |
| 54 | */ | |
| 55 | #define INIT_THREAD_INFO(tsk) \ | |
| 56 | { \ | |
| 57 | .task = &tsk, \ | |
| 58 | .exec_domain = &default_exec_domain, \ | |
| 59 | .cpu = 0, \ | |
| 60 | .preempt_count = 1, \ | |
| 61 | .addr_limit = KERNEL_DS, \ | |
| 62 | .restart_block = { \ | |
| 63 | .fn = do_no_restart_syscall, \ | |
| 64 | }, \ | |
| 65 | } | |
| 66 | ||
| 67 | #define init_thread_info (init_thread_union.thread_info) | |
| 68 | #define init_stack (init_thread_union.stack) | |
| 69 | ||
| 70 | /* How to get the thread information struct from C. */ | |
| 71 | register struct thread_info *__current_thread_info __asm__("r28"); | |
| 72 | #define current_thread_info() __current_thread_info | |
| 73 | ||
| 6bc9a396 CL |
74 | #define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL) |
| 75 | #define free_thread_info(info) kfree(info) | |
| 76 | ||
| 77 | #endif /* !__ASSEMBLY__ */ | |
| 78 | ||
| 79 | #define PREEMPT_ACTIVE 0x10000000 | |
| 80 | ||
| 81 | /* | |
| 82 | * thread information flags | |
| 83 | * - these are process state flags that various assembly files may need to | |
| 84 | * access | |
| 85 | * - pending work-to-be-done flags are in LSW | |
| 86 | * - other flags in MSW | |
| 87 | */ | |
| 88 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ | |
| 89 | #define TIF_SIGPENDING 1 /* signal pending */ | |
| 90 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | |
| 9973affe | 91 | #define TIF_NOTIFY_RESUME 5 /* callback before returning to user */ |
| 6bc9a396 CL |
92 | #define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */ |
| 93 | #define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling | |
| 94 | TIF_NEED_RESCHED */ | |
| 95 | #define TIF_MEMDIE 18 | |
| 96 | ||
| 97 | #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) | |
| 98 | #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) | |
| 99 | #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) | |
| 9973affe | 100 | #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) |
| 6bc9a396 CL |
101 | #define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) |
| 102 | #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) | |
| 103 | ||
| 104 | #define _TIF_WORK_MASK (0x0000ffff) | |
| 105 | ||
| 106 | #endif /* __KERNEL__ */ | |
| 107 | ||
| 108 | #endif /* _ASM_SCORE_THREAD_INFO_H */ |