projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 1da177e4 | 2 | * S390 version |
| a53c8fab | 3 | * Copyright IBM Corp. 2002, 2006 |
| 1da177e4 LT |
4 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef _ASM_THREAD_INFO_H | |
| 8 | #define _ASM_THREAD_INFO_H | |
| 9 | ||
| 92778b99 HC |
10 | #include <linux/const.h> |
| 11 | ||
| 1da177e4 LT |
12 | /* |
| 13 | * Size of kernel stack for each process | |
| 14 | */ | |
| 1da177e4 LT |
15 | #define THREAD_ORDER 2 |
| 16 | #define ASYNC_ORDER 2 | |
| 1da177e4 LT |
17 | |
| 18 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) | |
| 19 | #define ASYNC_SIZE (PAGE_SIZE << ASYNC_ORDER) | |
| 20 | ||
| 21 | #ifndef __ASSEMBLY__ | |
| 1da177e4 | 22 | #include <asm/lowcore.h> |
| 25097bf1 CE |
23 | #include <asm/page.h> |
| 24 | #include <asm/processor.h> | |
| 1da177e4 LT |
25 | |
| 26 | /* | |
| 27 | * low level task data that entry.S needs immediate access to | |
| 28 | * - this struct should fit entirely inside of one cache line | |
| 29 | * - this struct shares the supervisor stack pages | |
| 30 | * - if the contents of this structure are changed, the assembly constants must also be changed | |
| 31 | */ | |
| 32 | struct thread_info { | |
| 33 | struct task_struct *task; /* main task structure */ | |
| 1da177e4 | 34 | unsigned long flags; /* low level flags */ |
| 61649881 | 35 | unsigned long sys_call_table; /* System call table address */ |
| 1da177e4 | 36 | unsigned int cpu; /* current CPU */ |
| dcd497f9 | 37 | int preempt_count; /* 0 => preemptable, <0 => BUG */ |
| 20b40a79 | 38 | unsigned int system_call; |
| aa5e97ce MS |
39 | __u64 user_timer; |
| 40 | __u64 system_timer; | |
| 86f2552b | 41 | unsigned long last_break; /* last breaking-event-address. */ |
| 1da177e4 LT |
42 | }; |
| 43 | ||
| 44 | /* | |
| 45 | * macros/functions for gaining access to the thread information structure | |
| 46 | */ | |
| 47 | #define INIT_THREAD_INFO(tsk) \ | |
| 48 | { \ | |
| 49 | .task = &tsk, \ | |
| 1da177e4 LT |
50 | .flags = 0, \ |
| 51 | .cpu = 0, \ | |
| c99e6efe | 52 | .preempt_count = INIT_PREEMPT_COUNT, \ |
| 1da177e4 LT |
53 | } |
| 54 | ||
| 55 | #define init_thread_info (init_thread_union.thread_info) | |
| 56 | #define init_stack (init_thread_union.stack) | |
| 57 | ||
| 58 | /* how to get the thread information struct from C */ | |
| 59 | static inline struct thread_info *current_thread_info(void) | |
| 60 | { | |
| 6432c015 | 61 | return (struct thread_info *) S390_lowcore.thread_info; |
| 1da177e4 LT |
62 | } |
| 63 | ||
| 2a5e91c3 HC |
64 | void arch_release_task_struct(struct task_struct *tsk); |
| 65 | ||
| b69c49b7 | 66 | #define THREAD_SIZE_ORDER THREAD_ORDER |
| 1da177e4 LT |
67 | |
| 68 | #endif | |
| 69 | ||
| 70 | /* | |
| 71 | * thread information flags bit numbers | |
| 72 | */ | |
| d3a73acb MS |
73 | #define TIF_NOTIFY_RESUME 0 /* callback before returning to user */ |
| 74 | #define TIF_SIGPENDING 1 /* signal pending */ | |
| 75 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | |
| 76 | #define TIF_SYSCALL_TRACE 3 /* syscall trace active */ | |
| 77 | #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ | |
| 78 | #define TIF_SECCOMP 5 /* secure computing */ | |
| 79 | #define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */ | |
| 2a0a5b22 | 80 | #define TIF_UPROBE 7 /* breakpointed or single-stepping */ |
| d3a73acb MS |
81 | #define TIF_31BIT 16 /* 32bit process */ |
| 82 | #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ | |
| 83 | #define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */ | |
| 84 | #define TIF_SINGLE_STEP 19 /* This task is single stepped */ | |
| 85 | #define TIF_BLOCK_STEP 20 /* This task is block stepped */ | |
| 2a0a5b22 | 86 | #define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ |
| 1da177e4 | 87 | |
| 92778b99 HC |
88 | #define _TIF_NOTIFY_RESUME _BITUL(TIF_NOTIFY_RESUME) |
| 89 | #define _TIF_SIGPENDING _BITUL(TIF_SIGPENDING) | |
| 90 | #define _TIF_NEED_RESCHED _BITUL(TIF_NEED_RESCHED) | |
| 91 | #define _TIF_SYSCALL_TRACE _BITUL(TIF_SYSCALL_TRACE) | |
| 92 | #define _TIF_SYSCALL_AUDIT _BITUL(TIF_SYSCALL_AUDIT) | |
| 93 | #define _TIF_SECCOMP _BITUL(TIF_SECCOMP) | |
| 94 | #define _TIF_SYSCALL_TRACEPOINT _BITUL(TIF_SYSCALL_TRACEPOINT) | |
| 95 | #define _TIF_UPROBE _BITUL(TIF_UPROBE) | |
| 96 | #define _TIF_31BIT _BITUL(TIF_31BIT) | |
| 97 | #define _TIF_SINGLE_STEP _BITUL(TIF_SINGLE_STEP) | |
| 1da177e4 | 98 | |
| 1da177e4 | 99 | #endif /* _ASM_THREAD_INFO_H */ |