1 #ifndef _ASM_PARISC_THREAD_INFO_H 2 #define _ASM_PARISC_THREAD_INFO_H 3 4 #ifdef __KERNEL__ 5 6 #ifndef __ASSEMBLY__ 7 #include <asm/processor.h> 8 #include <asm/special_insns.h> 9 10 struct thread_info { 11 struct task_struct *task; /* main task structure */ 12 unsigned long flags; /* thread_info flags (see TIF_*) */ 13 mm_segment_t addr_limit; /* user-level address space limit */ 14 __u32 cpu; /* current CPU */ 15 int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ 16 }; 17 18 #define INIT_THREAD_INFO(tsk) \ 19 { \ 20 .task = &tsk, \ 21 .flags = 0, \ 22 .cpu = 0, \ 23 .addr_limit = KERNEL_DS, \ 24 .preempt_count = INIT_PREEMPT_COUNT, \ 25 } 26 27 #define init_thread_info (init_thread_union.thread_info) 28 #define init_stack (init_thread_union.stack) 29 30 /* how to get the thread information struct from C */ 31 #define current_thread_info() ((struct thread_info *)mfctl(30)) 32 33 #endif /* !__ASSEMBLY */ 34 35 /* thread information allocation */ 36 37 #define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ 38 /* Be sure to hunt all references to this down when you change the size of 39 * the kernel stack */ 40 #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) 41 #define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) 42 43 /* 44 * thread information flags 45 */ 46 #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ 47 #define TIF_SIGPENDING 1 /* signal pending */ 48 #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ 49 #define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */ 50 #define TIF_32BIT 4 /* 32 bit binary */ 51 #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ 52 #define TIF_RESTORE_SIGMASK 6 /* restore saved signal mask */ 53 #define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ 54 #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ 55 #define TIF_SINGLESTEP 9 /* single stepping? */ 56 #define TIF_BLOCKSTEP 10 /* branch stepping? */ 57 #define TIF_SECCOMP 11 /* secure computing */ 58 #define TIF_SYSCALL_TRACEPOINT 12 /* syscall tracepoint instrumentation */ 59 60 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 61 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 62 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 63 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 64 #define _TIF_32BIT (1 << TIF_32BIT) 65 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) 66 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 67 #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) 68 #define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) 69 #define _TIF_SECCOMP (1 << TIF_SECCOMP) 70 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) 71 72 #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ 73 _TIF_NEED_RESCHED) 74 #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ 75 _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT | \ 76 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT) 77 78 #ifdef CONFIG_64BIT 79 # ifdef CONFIG_COMPAT 80 # define is_32bit_task() (test_thread_flag(TIF_32BIT)) 81 # else 82 # define is_32bit_task() (0) 83 # endif 84 #else 85 # define is_32bit_task() (1) 86 #endif 87 88 #endif /* __KERNEL__ */ 89 90 #endif /* _ASM_PARISC_THREAD_INFO_H */ 91