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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 05:20:03 -0400
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 05:20:03 -0400
commit96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 (patch)
treed947a467aa2da3140279617bc4b9b101640d7bf4 /include/asm-x86_64/thread_info.h
parent27bd0c955648646abf2a353a8371d28c37bcd982 (diff)
i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86_64/thread_info.h')
-rw-r--r--include/asm-x86_64/thread_info.h169
1 files changed, 0 insertions, 169 deletions
diff --git a/include/asm-x86_64/thread_info.h b/include/asm-x86_64/thread_info.h
deleted file mode 100644
index beae2bfb62ca..000000000000
--- a/include/asm-x86_64/thread_info.h
+++ /dev/null
@@ -1,169 +0,0 @@
1/* thread_info.h: x86_64 low-level thread information
2 *
3 * Copyright (C) 2002 David Howells (dhowells@redhat.com)
4 * - Incorporating suggestions made by Linus Torvalds and Dave Miller
5 */
6
7#ifndef _ASM_THREAD_INFO_H
8#define _ASM_THREAD_INFO_H
9
10#ifdef __KERNEL__
11
12#include <asm/page.h>
13#include <asm/types.h>
14#include <asm/pda.h>
15
16/*
17 * low level task data that entry.S needs immediate access to
18 * - this struct should fit entirely inside of one cache line
19 * - this struct shares the supervisor stack pages
20 */
21#ifndef __ASSEMBLY__
22struct task_struct;
23struct exec_domain;
24#include <asm/mmsegment.h>
25
26struct thread_info {
27 struct task_struct *task; /* main task structure */
28 struct exec_domain *exec_domain; /* execution domain */
29 __u32 flags; /* low level flags */
30 __u32 status; /* thread synchronous flags */
31 __u32 cpu; /* current CPU */
32 int preempt_count; /* 0 => preemptable, <0 => BUG */
33
34 mm_segment_t addr_limit;
35 struct restart_block restart_block;
36};
37#endif
38
39/*
40 * macros/functions for gaining access to the thread information structure
41 * preempt_count needs to be 1 initially, until the scheduler is functional.
42 */
43#ifndef __ASSEMBLY__
44#define INIT_THREAD_INFO(tsk) \
45{ \
46 .task = &tsk, \
47 .exec_domain = &default_exec_domain, \
48 .flags = 0, \
49 .cpu = 0, \
50 .preempt_count = 1, \
51 .addr_limit = KERNEL_DS, \
52 .restart_block = { \
53 .fn = do_no_restart_syscall, \
54 }, \
55}
56
57#define init_thread_info (init_thread_union.thread_info)
58#define init_stack (init_thread_union.stack)
59
60static inline struct thread_info *current_thread_info(void)
61{
62 struct thread_info *ti;
63 ti = (void *)(read_pda(kernelstack) + PDA_STACKOFFSET - THREAD_SIZE);
64 return ti;
65}
66
67/* do not use in interrupt context */
68static inline struct thread_info *stack_thread_info(void)
69{
70 struct thread_info *ti;
71 __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (~(THREAD_SIZE - 1)));
72 return ti;
73}
74
75/* thread information allocation */
76#ifdef CONFIG_DEBUG_STACK_USAGE
77#define alloc_thread_info(tsk) \
78 ({ \
79 struct thread_info *ret; \
80 \
81 ret = ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER)); \
82 if (ret) \
83 memset(ret, 0, THREAD_SIZE); \
84 ret; \
85 })
86#else
87#define alloc_thread_info(tsk) \
88 ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER))
89#endif
90
91#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
92
93#else /* !__ASSEMBLY__ */
94
95/* how to get the thread information struct from ASM */
96#define GET_THREAD_INFO(reg) \
97 movq %gs:pda_kernelstack,reg ; \
98 subq $(THREAD_SIZE-PDA_STACKOFFSET),reg
99
100#endif
101
102/*
103 * thread information flags
104 * - these are process state flags that various assembly files may need to access
105 * - pending work-to-be-done flags are in LSW
106 * - other flags in MSW
107 * Warning: layout of LSW is hardcoded in entry.S
108 */
109#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
110#define TIF_SIGPENDING 2 /* signal pending */
111#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
112#define TIF_SINGLESTEP 4 /* reenable singlestep on user return*/
113#define TIF_IRET 5 /* force IRET */
114#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */
115#define TIF_SECCOMP 8 /* secure computing */
116#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal */
117#define TIF_MCE_NOTIFY 10 /* notify userspace of an MCE */
118/* 16 free */
119#define TIF_IA32 17 /* 32bit process */
120#define TIF_FORK 18 /* ret_from_fork */
121#define TIF_ABI_PENDING 19
122#define TIF_MEMDIE 20
123#define TIF_DEBUG 21 /* uses debug registers */
124#define TIF_IO_BITMAP 22 /* uses I/O bitmap */
125#define TIF_FREEZE 23 /* is freezing for suspend */
126
127#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
128#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
129#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
130#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
131#define _TIF_IRET (1<<TIF_IRET)
132#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
133#define _TIF_SECCOMP (1<<TIF_SECCOMP)
134#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
135#define _TIF_MCE_NOTIFY (1<<TIF_MCE_NOTIFY)
136#define _TIF_IA32 (1<<TIF_IA32)
137#define _TIF_FORK (1<<TIF_FORK)
138#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
139#define _TIF_DEBUG (1<<TIF_DEBUG)
140#define _TIF_IO_BITMAP (1<<TIF_IO_BITMAP)
141#define _TIF_FREEZE (1<<TIF_FREEZE)
142
143/* work to do on interrupt/exception return */
144#define _TIF_WORK_MASK \
145 (0x0000FFFF & ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP|_TIF_SECCOMP))
146/* work to do on any return to user space */
147#define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP)
148
149/* flags to check in __switch_to() */
150#define _TIF_WORK_CTXSW (_TIF_DEBUG|_TIF_IO_BITMAP)
151
152#define PREEMPT_ACTIVE 0x10000000
153
154/*
155 * Thread-synchronous status.
156 *
157 * This is different from the flags in that nobody else
158 * ever touches our thread-synchronous status, so we don't
159 * have to worry about atomic accesses.
160 */
161#define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */
162#define TS_COMPAT 0x0002 /* 32bit syscall active */
163#define TS_POLLING 0x0004 /* true if in idle loop and not sleeping */
164
165#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
166
167#endif /* __KERNEL__ */
168
169#endif /* _ASM_THREAD_INFO_H */
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