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 10struct 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 59#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 60#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 61#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 62#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 63#define _TIF_32BIT (1 << TIF_32BIT) 64#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) 65#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 66#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) 67#define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) 68#define _TIF_SECCOMP (1 << TIF_SECCOMP) 69 70#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ 71 _TIF_NEED_RESCHED) 72#define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ 73 _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT | \ 74 _TIF_SECCOMP) 75 76#ifdef CONFIG_64BIT 77# ifdef CONFIG_COMPAT 78# define is_32bit_task() (test_thread_flag(TIF_32BIT)) 79# else 80# define is_32bit_task() (0) 81# endif 82#else 83# define is_32bit_task() (1) 84#endif 85 86#endif /* __KERNEL__ */ 87 88#endif /* _ASM_PARISC_THREAD_INFO_H */ 89