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 | ||
| 1da177e4 LT |
10 | /* |
| 11 | * Size of kernel stack for each process | |
| 12 | */ | |
| 1da177e4 LT |
13 | #define THREAD_ORDER 2 |
| 14 | #define ASYNC_ORDER 2 | |
| 1da177e4 LT |
15 | |
| 16 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) | |
| 17 | #define ASYNC_SIZE (PAGE_SIZE << ASYNC_ORDER) | |
| 18 | ||
| 19 | #ifndef __ASSEMBLY__ | |
| 1da177e4 | 20 | #include <asm/lowcore.h> |
| 25097bf1 CE |
21 | #include <asm/page.h> |
| 22 | #include <asm/processor.h> | |
| 1da177e4 LT |
23 | |
| 24 | /* | |
| 25 | * low level task data that entry.S needs immediate access to | |
| 26 | * - this struct should fit entirely inside of one cache line | |
| 27 | * - this struct shares the supervisor stack pages | |
| 28 | * - if the contents of this structure are changed, the assembly constants must also be changed | |
| 29 | */ | |
| 30 | struct thread_info { | |
| 31 | struct task_struct *task; /* main task structure */ | |
| 1da177e4 | 32 | unsigned long flags; /* low level flags */ |
| 61649881 | 33 | unsigned long sys_call_table; /* System call table address */ |
| 1da177e4 | 34 | unsigned int cpu; /* current CPU */ |
| dcd497f9 | 35 | int preempt_count; /* 0 => preemptable, <0 => BUG */ |
| 20b40a79 | 36 | unsigned int system_call; |
| aa5e97ce MS |
37 | __u64 user_timer; |
| 38 | __u64 system_timer; | |
| 86f2552b | 39 | unsigned long last_break; /* last breaking-event-address. */ |
| 1da177e4 LT |
40 | }; |
| 41 | ||
| 42 | /* | |
| 43 | * macros/functions for gaining access to the thread information structure | |
| 44 | */ | |
| 45 | #define INIT_THREAD_INFO(tsk) \ | |
| 46 | { \ | |
| 47 | .task = &tsk, \ | |
| 1da177e4 LT |
48 | .flags = 0, \ |
| 49 | .cpu = 0, \ | |
| c99e6efe | 50 | .preempt_count = INIT_PREEMPT_COUNT, \ |
| 1da177e4 LT |
51 | } |
| 52 | ||
| 53 | #define init_thread_info (init_thread_union.thread_info) | |
| 54 | #define init_stack (init_thread_union.stack) | |
| 55 | ||
| 56 | /* how to get the thread information struct from C */ | |
| 57 | static inline struct thread_info *current_thread_info(void) | |
| 58 | { | |
| 6432c015 | 59 | return (struct thread_info *) S390_lowcore.thread_info; |
| 1da177e4 LT |
60 | } |
| 61 | ||
| 2a5e91c3 HC |
62 | void arch_release_task_struct(struct task_struct *tsk); |
| 63 | ||
| b69c49b7 | 64 | #define THREAD_SIZE_ORDER THREAD_ORDER |
| 1da177e4 LT |
65 | |
| 66 | #endif | |
| 67 | ||
| 68 | /* | |
| 69 | * thread information flags bit numbers | |
| 70 | */ | |
| d3a73acb MS |
71 | #define TIF_NOTIFY_RESUME 0 /* callback before returning to user */ |
| 72 | #define TIF_SIGPENDING 1 /* signal pending */ | |
| 73 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | |
| 74 | #define TIF_SYSCALL_TRACE 3 /* syscall trace active */ | |
| 75 | #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ | |
| 76 | #define TIF_SECCOMP 5 /* secure computing */ | |
| 77 | #define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */ | |
| 2a0a5b22 | 78 | #define TIF_UPROBE 7 /* breakpointed or single-stepping */ |
| d3a73acb MS |
79 | #define TIF_31BIT 16 /* 32bit process */ |
| 80 | #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ | |
| 81 | #define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */ | |
| 82 | #define TIF_SINGLE_STEP 19 /* This task is single stepped */ | |
| 83 | #define TIF_BLOCK_STEP 20 /* This task is block stepped */ | |
| 2a0a5b22 | 84 | #define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ |
| 1da177e4 | 85 | |
| 753c4dd6 | 86 | #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) |
| 1da177e4 LT |
87 | #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) |
| 88 | #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) | |
| bcf5cef7 HC |
89 | #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) |
| 90 | #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) | |
| 91 | #define _TIF_SECCOMP (1<<TIF_SECCOMP) | |
| 66700001 | 92 | #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) |
| 2a0a5b22 | 93 | #define _TIF_UPROBE (1<<TIF_UPROBE) |
| 1da177e4 | 94 | #define _TIF_31BIT (1<<TIF_31BIT) |
| 80853a8a | 95 | #define _TIF_SINGLE_STEP (1<<TIF_SINGLE_STEP) |
| 1da177e4 | 96 | |
| a05c90f1 | 97 | #define is_32bit_task() (test_thread_flag(TIF_31BIT)) |
| a05c90f1 | 98 | |
| 1da177e4 | 99 | #endif /* _ASM_THREAD_INFO_H */ |