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-rw-r--r--include/asm-x86/thread_info_64.h195
1 files changed, 0 insertions, 195 deletions
diff --git a/include/asm-x86/thread_info_64.h b/include/asm-x86/thread_info_64.h
deleted file mode 100644
index cb69f70abba..00000000000
--- a/include/asm-x86/thread_info_64.h
+++ /dev/null
@@ -1,195 +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/processor.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,
33 <0 => BUG */
34 mm_segment_t addr_limit;
35 struct restart_block restart_block;
36#ifdef CONFIG_IA32_EMULATION
37 void __user *sysenter_return;
38#endif
39};
40#endif
41
42/*
43 * macros/functions for gaining access to the thread information structure
44 * preempt_count needs to be 1 initially, until the scheduler is functional.
45 */
46#ifndef __ASSEMBLY__
47#define INIT_THREAD_INFO(tsk) \
48{ \
49 .task = &tsk, \
50 .exec_domain = &default_exec_domain, \
51 .flags = 0, \
52 .cpu = 0, \
53 .preempt_count = 1, \
54 .addr_limit = KERNEL_DS, \
55 .restart_block = { \
56 .fn = do_no_restart_syscall, \
57 }, \
58}
59
60#define init_thread_info (init_thread_union.thread_info)
61#define init_stack (init_thread_union.stack)
62
63static inline struct thread_info *current_thread_info(void)
64{
65 struct thread_info *ti;
66 ti = (void *)(read_pda(kernelstack) + PDA_STACKOFFSET - THREAD_SIZE);
67 return ti;
68}
69
70/* do not use in interrupt context */
71static inline struct thread_info *stack_thread_info(void)
72{
73 struct thread_info *ti;
74 asm("andq %%rsp,%0; " : "=r" (ti) : "0" (~(THREAD_SIZE - 1)));
75 return ti;
76}
77
78/* thread information allocation */
79#ifdef CONFIG_DEBUG_STACK_USAGE
80#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO)
81#else
82#define THREAD_FLAGS GFP_KERNEL
83#endif
84
85#define alloc_thread_info(tsk) \
86 ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER))
87
88#else /* !__ASSEMBLY__ */
89
90/* how to get the thread information struct from ASM */
91#define GET_THREAD_INFO(reg) \
92 movq %gs:pda_kernelstack,reg ; \
93 subq $(THREAD_SIZE-PDA_STACKOFFSET),reg
94
95#endif
96
97/*
98 * thread information flags
99 * - these are process state flags that various assembly files
100 * may need to access
101 * - pending work-to-be-done flags are in LSW
102 * - other flags in MSW
103 * Warning: layout of LSW is hardcoded in entry.S
104 */
105#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
106#define TIF_SIGPENDING 2 /* signal pending */
107#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
108#define TIF_SINGLESTEP 4 /* reenable singlestep on user return*/
109#define TIF_IRET 5 /* force IRET */
110#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */
111#define TIF_SECCOMP 8 /* secure computing */
112#define TIF_MCE_NOTIFY 10 /* notify userspace of an MCE */
113#define TIF_HRTICK_RESCHED 11 /* reprogram hrtick timer */
114/* 16 free */
115#define TIF_IA32 17 /* 32bit process */
116#define TIF_FORK 18 /* ret_from_fork */
117#define TIF_ABI_PENDING 19
118#define TIF_MEMDIE 20
119#define TIF_DEBUG 21 /* uses debug registers */
120#define TIF_IO_BITMAP 22 /* uses I/O bitmap */
121#define TIF_FREEZE 23 /* is freezing for suspend */
122#define TIF_FORCED_TF 24 /* true if TF in eflags artificially */
123#define TIF_DEBUGCTLMSR 25 /* uses thread_struct.debugctlmsr */
124#define TIF_DS_AREA_MSR 26 /* uses thread_struct.ds_area_msr */
125#define TIF_BTS_TRACE_TS 27 /* record scheduling event timestamps */
126#define TIF_NOTSC 28 /* TSC is not accessible in userland */
127
128#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
129#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
130#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
131#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
132#define _TIF_IRET (1 << TIF_IRET)
133#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
134#define _TIF_SECCOMP (1 << TIF_SECCOMP)
135#define _TIF_MCE_NOTIFY (1 << TIF_MCE_NOTIFY)
136#define _TIF_HRTICK_RESCHED (1 << TIF_HRTICK_RESCHED)
137#define _TIF_IA32 (1 << TIF_IA32)
138#define _TIF_FORK (1 << TIF_FORK)
139#define _TIF_ABI_PENDING (1 << TIF_ABI_PENDING)
140#define _TIF_DEBUG (1 << TIF_DEBUG)
141#define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP)
142#define _TIF_FREEZE (1 << TIF_FREEZE)
143#define _TIF_FORCED_TF (1 << TIF_FORCED_TF)
144#define _TIF_DEBUGCTLMSR (1 << TIF_DEBUGCTLMSR)
145#define _TIF_DS_AREA_MSR (1 << TIF_DS_AREA_MSR)
146#define _TIF_BTS_TRACE_TS (1 << TIF_BTS_TRACE_TS)
147#define _TIF_NOTSC (1 << TIF_NOTSC)
148
149/* work to do on interrupt/exception return */
150#define _TIF_WORK_MASK \
151 (0x0000FFFF & \
152 ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP|_TIF_SECCOMP))
153/* work to do on any return to user space */
154#define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP)
155
156#define _TIF_DO_NOTIFY_MASK \
157 (_TIF_SIGPENDING|_TIF_SINGLESTEP|_TIF_MCE_NOTIFY|_TIF_HRTICK_RESCHED)
158
159/* flags to check in __switch_to() */
160#define _TIF_WORK_CTXSW \
161 (_TIF_IO_BITMAP|_TIF_DEBUGCTLMSR|_TIF_DS_AREA_MSR|_TIF_BTS_TRACE_TS|_TIF_NOTSC)
162#define _TIF_WORK_CTXSW_PREV _TIF_WORK_CTXSW
163#define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW|_TIF_DEBUG)
164
165#define PREEMPT_ACTIVE 0x10000000
166
167/*
168 * Thread-synchronous status.
169 *
170 * This is different from the flags in that nobody else
171 * ever touches our thread-synchronous status, so we don't
172 * have to worry about atomic accesses.
173 */
174#define TS_USEDFPU 0x0001 /* FPU was used by this task
175 this quantum (SMP) */
176#define TS_COMPAT 0x0002 /* 32bit syscall active */
177#define TS_POLLING 0x0004 /* true if in idle loop
178 and not sleeping */
179#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */
180
181#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
182
183#ifndef __ASSEMBLY__
184#define HAVE_SET_RESTORE_SIGMASK 1
185static inline void set_restore_sigmask(void)
186{
187 struct thread_info *ti = current_thread_info();
188 ti->status |= TS_RESTORE_SIGMASK;
189 set_bit(TIF_SIGPENDING, &ti->flags);
190}
191#endif /* !__ASSEMBLY__ */
192
193#endif /* __KERNEL__ */
194
195#endif /* _ASM_THREAD_INFO_H */
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