1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_PARISC_THREAD_INFO_H 3#define _ASM_PARISC_THREAD_INFO_H 4 5#ifdef __KERNEL__ 6 7#ifndef __ASSEMBLY__ 8#include <asm/processor.h> 9#include <asm/special_insns.h> 10 11struct thread_info { 12 struct task_struct *task; /* main task structure */ 13 unsigned long flags; /* thread_info flags (see TIF_*) */ 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 .preempt_count = INIT_PREEMPT_COUNT, \ 24} 25 26/* how to get the thread information struct from C */ 27#define current_thread_info() ((struct thread_info *)mfctl(30)) 28 29#endif /* !__ASSEMBLY */ 30 31/* thread information allocation */ 32 33#ifdef CONFIG_IRQSTACKS 34#define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ 35#else 36#define THREAD_SIZE_ORDER 3 /* PA-RISC requires at least 32k stack */ 37#endif 38 39/* Be sure to hunt all references to this down when you change the size of 40 * the kernel stack */ 41#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) 42#define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) 43 44/* 45 * thread information flags 46 */ 47#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ 48#define TIF_SIGPENDING 1 /* signal pending */ 49#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ 50#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */ 51#define TIF_32BIT 4 /* 32 bit binary */ 52#define TIF_MEMDIE 5 /* is terminating due to OOM killer */ 53#define TIF_NOTIFY_SIGNAL 6 /* signal notifications exist */ 54#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ 55#define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ 56#define TIF_SINGLESTEP 9 /* single stepping? */ 57#define TIF_BLOCKSTEP 10 /* branch stepping? */ 58#define TIF_SECCOMP 11 /* secure computing */ 59#define TIF_SYSCALL_TRACEPOINT 12 /* syscall tracepoint instrumentation */ 60 61#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 62#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 63#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) 64#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 65#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 66#define _TIF_32BIT (1 << TIF_32BIT) 67#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) 68#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 69#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) 70#define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) 71#define _TIF_SECCOMP (1 << TIF_SECCOMP) 72#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) 73 74#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ 75 _TIF_NEED_RESCHED | _TIF_NOTIFY_SIGNAL) 76#define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ 77 _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT | \ 78 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT) 79 80#ifdef CONFIG_64BIT 81# ifdef CONFIG_COMPAT 82# define is_32bit_task() (test_thread_flag(TIF_32BIT)) 83# else 84# define is_32bit_task() (0) 85# endif 86#else 87# define is_32bit_task() (1) 88#endif 89 90#endif /* __KERNEL__ */ 91 92#endif /* _ASM_PARISC_THREAD_INFO_H */ 93