~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/arm64/include/asm/thread_info.h

Version: ~ [ linux-5.9-rc5 ] ~ [ linux-5.8.10 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.66 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.146 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.198 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.236 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.236 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * Based on arch/arm/include/asm/thread_info.h
  3  *
  4  * Copyright (C) 2002 Russell King.
  5  * Copyright (C) 2012 ARM Ltd.
  6  *
  7  * This program is free software; you can redistribute it and/or modify
  8  * it under the terms of the GNU General Public License version 2 as
  9  * published by the Free Software Foundation.
 10  *
 11  * This program is distributed in the hope that it will be useful,
 12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14  * GNU General Public License for more details.
 15  *
 16  * You should have received a copy of the GNU General Public License
 17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 18  */
 19 #ifndef __ASM_THREAD_INFO_H
 20 #define __ASM_THREAD_INFO_H
 21 
 22 #ifdef __KERNEL__
 23 
 24 #include <linux/compiler.h>
 25 
 26 #ifndef CONFIG_ARM64_64K_PAGES
 27 #define THREAD_SIZE_ORDER       2
 28 #endif
 29 
 30 #define THREAD_SIZE             16384
 31 #define THREAD_START_SP         (THREAD_SIZE - 16)
 32 
 33 #ifndef __ASSEMBLY__
 34 
 35 struct task_struct;
 36 
 37 #include <asm/types.h>
 38 
 39 typedef unsigned long mm_segment_t;
 40 
 41 /*
 42  * low level task data that entry.S needs immediate access to.
 43  * __switch_to() assumes cpu_context follows immediately after cpu_domain.
 44  */
 45 struct thread_info {
 46         unsigned long           flags;          /* low level flags */
 47         mm_segment_t            addr_limit;     /* address limit */
 48         struct task_struct      *task;          /* main task structure */
 49         int                     preempt_count;  /* 0 => preemptable, <0 => bug */
 50         int                     cpu;            /* cpu */
 51 };
 52 
 53 #define INIT_THREAD_INFO(tsk)                                           \
 54 {                                                                       \
 55         .task           = &tsk,                                         \
 56         .flags          = 0,                                            \
 57         .preempt_count  = INIT_PREEMPT_COUNT,                           \
 58         .addr_limit     = KERNEL_DS,                                    \
 59 }
 60 
 61 #define init_thread_info        (init_thread_union.thread_info)
 62 #define init_stack              (init_thread_union.stack)
 63 
 64 /*
 65  * how to get the current stack pointer from C
 66  */
 67 register unsigned long current_stack_pointer asm ("sp");
 68 
 69 /*
 70  * how to get the thread information struct from C
 71  */
 72 static inline struct thread_info *current_thread_info(void) __attribute_const__;
 73 
 74 static inline struct thread_info *current_thread_info(void)
 75 {
 76         return (struct thread_info *)
 77                 (current_stack_pointer & ~(THREAD_SIZE - 1));
 78 }
 79 
 80 #define thread_saved_pc(tsk)    \
 81         ((unsigned long)(tsk->thread.cpu_context.pc))
 82 #define thread_saved_sp(tsk)    \
 83         ((unsigned long)(tsk->thread.cpu_context.sp))
 84 #define thread_saved_fp(tsk)    \
 85         ((unsigned long)(tsk->thread.cpu_context.fp))
 86 
 87 #endif
 88 
 89 /*
 90  * thread information flags:
 91  *  TIF_SYSCALL_TRACE   - syscall trace active
 92  *  TIF_SYSCALL_TRACEPOINT - syscall tracepoint for ftrace
 93  *  TIF_SYSCALL_AUDIT   - syscall auditing
 94  *  TIF_SECOMP          - syscall secure computing
 95  *  TIF_SIGPENDING      - signal pending
 96  *  TIF_NEED_RESCHED    - rescheduling necessary
 97  *  TIF_NOTIFY_RESUME   - callback before returning to user
 98  *  TIF_USEDFPU         - FPU was used by this task this quantum (SMP)
 99  */
100 #define TIF_SIGPENDING          0
101 #define TIF_NEED_RESCHED        1
102 #define TIF_NOTIFY_RESUME       2       /* callback before returning to user */
103 #define TIF_FOREIGN_FPSTATE     3       /* CPU's FP state is not current's */
104 #define TIF_NOHZ                7
105 #define TIF_SYSCALL_TRACE       8
106 #define TIF_SYSCALL_AUDIT       9
107 #define TIF_SYSCALL_TRACEPOINT  10
108 #define TIF_SECCOMP             11
109 #define TIF_MEMDIE              18      /* is terminating due to OOM killer */
110 #define TIF_FREEZE              19
111 #define TIF_RESTORE_SIGMASK     20
112 #define TIF_SINGLESTEP          21
113 #define TIF_32BIT               22      /* 32bit process */
114 #define TIF_SWITCH_MM           23      /* deferred switch_mm */
115 
116 #define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
117 #define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
118 #define _TIF_NOTIFY_RESUME      (1 << TIF_NOTIFY_RESUME)
119 #define _TIF_FOREIGN_FPSTATE    (1 << TIF_FOREIGN_FPSTATE)
120 #define _TIF_NOHZ               (1 << TIF_NOHZ)
121 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
122 #define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
123 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
124 #define _TIF_SECCOMP            (1 << TIF_SECCOMP)
125 #define _TIF_32BIT              (1 << TIF_32BIT)
126 
127 #define _TIF_WORK_MASK          (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
128                                  _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE)
129 
130 #define _TIF_SYSCALL_WORK       (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
131                                  _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
132                                  _TIF_NOHZ)
133 
134 #endif /* __KERNEL__ */
135 #endif /* __ASM_THREAD_INFO_H */
136 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp