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