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 11 struct thread_info { 12 struct task_struct *task; /* main task structure */ 13 unsigned long flags; /* thread_info flags (see TIF_*) */ 14 mm_segment_t addr_limit; /* user-level address space limit */ 15 __u32 cpu; /* current CPU */ 16 int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ 17 }; 18 19 #define INIT_THREAD_INFO(tsk) \ 20 { \ 21 .task = &tsk, \ 22 .flags = 0, \ 23 .cpu = 0, \ 24 .addr_limit = KERNEL_DS, \ 25 .preempt_count = INIT_PREEMPT_COUNT, \ 26 } 27 28 #define init_thread_info (init_thread_union.thread_info) 29 #define init_stack (init_thread_union.stack) 30 31 /* how to get the thread information struct from C */ 32 #define current_thread_info() ((struct thread_info *)mfctl(30)) 33 34 #endif /* !__ASSEMBLY */ 35 36 /* thread information allocation */ 37 38 #ifdef CONFIG_IRQSTACKS 39 #define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ 40 #else 41 #define THREAD_SIZE_ORDER 3 /* PA-RISC requires at least 32k stack */ 42 #endif 43 44 /* Be sure to hunt all references to this down when you change the size of 45 * the kernel stack */ 46 #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) 47 #define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) 48 49 /* 50 * thread information flags 51 */ 52 #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ 53 #define TIF_SIGPENDING 1 /* signal pending */ 54 #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ 55 #define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */ 56 #define TIF_32BIT 4 /* 32 bit binary */ 57 #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ 58 #define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ 59 #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ 60 #define TIF_SINGLESTEP 9 /* single stepping? */ 61 #define TIF_BLOCKSTEP 10 /* branch stepping? */ 62 #define TIF_SECCOMP 11 /* secure computing */ 63 #define TIF_SYSCALL_TRACEPOINT 12 /* syscall tracepoint instrumentation */ 64 65 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 66 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 67 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 68 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 69 #define _TIF_32BIT (1 << TIF_32BIT) 70 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) 71 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 72 #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) 73 #define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) 74 #define _TIF_SECCOMP (1 << TIF_SECCOMP) 75 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) 76 77 #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ 78 _TIF_NEED_RESCHED) 79 #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ 80 _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT | \ 81 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT) 82 83 #ifdef CONFIG_64BIT 84 # ifdef CONFIG_COMPAT 85 # define is_32bit_task() (test_thread_flag(TIF_32BIT)) 86 # else 87 # define is_32bit_task() (0) 88 # endif 89 #else 90 # define is_32bit_task() (1) 91 #endif 92 93 #endif /* __KERNEL__ */ 94 95 #endif /* _ASM_PARISC_THREAD_INFO_H */ 96