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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 */