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 9struct thread_info { 10 struct task_struct *task; /* main task structure */ 11 struct exec_domain *exec_domain;/* execution domain */ 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 struct restart_block restart_block; 17}; 18 19#define INIT_THREAD_INFO(tsk) \ 20{ \ 21 .task = &tsk, \ 22 .exec_domain = &default_exec_domain, \ 23 .flags = 0, \ 24 .cpu = 0, \ 25 .addr_limit = KERNEL_DS, \ 26 .preempt_count = 1, \ 27 .restart_block = { \ 28 .fn = do_no_restart_syscall \ 29 } \ 30} 31 32#define init_thread_info (init_thread_union.thread_info) 33#define init_stack (init_thread_union.stack) 34 35/* thread information allocation */ 36 37#define THREAD_ORDER 2 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_ORDER) 41#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER) 42 43#define alloc_thread_info(tsk) ((struct thread_info *) \ 44 __get_free_pages(GFP_KERNEL, THREAD_ORDER)) 45#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER) 46 47/* how to get the thread information struct from C */ 48#define current_thread_info() ((struct thread_info *)mfctl(30)) 49 50#endif /* !__ASSEMBLY */ 51 52#define PREEMPT_ACTIVE_BIT 28 53#define PREEMPT_ACTIVE (1 << PREEMPT_ACTIVE_BIT) 54 55/* 56 * thread information flags 57 */ 58#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ 59#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */ 60#define TIF_SIGPENDING 2 /* signal pending */ 61#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ 62#define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling TIF_NEED_RESCHED */ 63#define TIF_32BIT 5 /* 32 bit binary */ 64#define TIF_MEMDIE 6 65#define TIF_RESTORE_SIGMASK 7 /* restore saved signal mask */ 66 67#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 68#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 69#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 70#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 71#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 72#define _TIF_32BIT (1 << TIF_32BIT) 73#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) 74 75#define _TIF_USER_WORK_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \ 76 _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK) 77 78#endif /* __KERNEL__ */ 79 80#endif /* _ASM_PARISC_THREAD_INFO_H */ 81