diff options
Diffstat (limited to 'include/asm-x86/thread_info_64.h')
| -rw-r--r-- | include/asm-x86/thread_info_64.h | 195 |
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 cb69f70..0000000 --- a/include/asm-x86/thread_info_64.h +++ /dev/null @@ -1,195 +0,0 @@ -/* thread_info.h: x86_64 low-level thread information - * - * Copyright (C) 2002 David Howells (dhowells@redhat.com) - * - Incorporating suggestions made by Linus Torvalds and Dave Miller - */ - -#ifndef _ASM_THREAD_INFO_H -#define _ASM_THREAD_INFO_H - -#ifdef __KERNEL__ - -#include <asm/page.h> -#include <asm/types.h> -#include <asm/pda.h> - -/* - * low level task data that entry.S needs immediate access to - * - this struct should fit entirely inside of one cache line - * - this struct shares the supervisor stack pages - */ -#ifndef __ASSEMBLY__ -struct task_struct; -struct exec_domain; -#include <asm/processor.h> - -struct thread_info { - struct task_struct *task; /* main task structure */ - struct exec_domain *exec_domain; /* execution domain */ - __u32 flags; /* low level flags */ - __u32 status; /* thread synchronous flags */ - __u32 cpu; /* current CPU */ - int preempt_count; /* 0 => preemptable, - <0 => BUG */ - mm_segment_t addr_limit; - struct restart_block restart_block; -#ifdef CONFIG_IA32_EMULATION - void __user *sysenter_return; -#endif -}; -#endif - -/* - * macros/functions for gaining access to the thread information structure - * preempt_count needs to be 1 initially, until the scheduler is functional. - */ -#ifndef __ASSEMBLY__ -#define INIT_THREAD_INFO(tsk) \ -{ \ - .task = &tsk, \ - .exec_domain = &default_exec_domain, \ - .flags = 0, \ - .cpu = 0, \ - .preempt_count = 1, \ - .addr_limit = KERNEL_DS, \ - .restart_block = { \ - .fn = do_no_restart_syscall, \ - }, \ -} - -#define init_thread_info (init_thread_union.thread_info) -#define init_stack (init_thread_union.stack) - -static inline struct thread_info *current_thread_info(void) -{ - struct thread_info *ti; - ti = (void *)(read_pda(kernelstack) + PDA_STACKOFFSET - THREAD_SIZE); - return ti; -} - -/* do not use in interrupt context */ -static inline struct thread_info *stack_thread_info(void) -{ - struct thread_info *ti; - asm("andq %%rsp,%0; " : "=r" (ti) : "0" (~(THREAD_SIZE - 1))); - return ti; -} - -/* thread information allocation */ -#ifdef CONFIG_DEBUG_STACK_USAGE -#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO) -#else -#define THREAD_FLAGS GFP_KERNEL -#endif - -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER)) - -#else /* !__ASSEMBLY__ */ - -/* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg) \ - movq %gs:pda_kernelstack,reg ; \ - subq $(THREAD_SIZE-PDA_STACKOFFSET),reg - -#endif - -/* - * thread information flags - * - these are process state flags that various assembly files - * may need to access - * - pending work-to-be-done flags are in LSW - * - other flags in MSW - * Warning: layout of LSW is hardcoded in entry.S - */ -#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -#define TIF_SIGPENDING 2 /* signal pending */ -#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ -#define TIF_SINGLESTEP 4 /* reenable singlestep on user return*/ -#define TIF_IRET 5 /* force IRET */ -#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ -#define TIF_SECCOMP 8 /* secure computing */ -#define TIF_MCE_NOTIFY 10 /* notify userspace of an MCE */ -#define TIF_HRTICK_RESCHED 11 /* reprogram hrtick timer */ -/* 16 free */ -#define TIF_IA32 17 /* 32bit process */ -#define TIF_FORK 18 /* ret_from_fork */ -#define TIF_ABI_PENDING 19 -#define TIF_MEMDIE 20 -#define TIF_DEBUG 21 /* uses debug registers */ -#define TIF_IO_BITMAP 22 /* uses I/O bitmap */ -#define TIF_FREEZE 23 /* is freezing for suspend */ -#define TIF_FORCED_TF 24 /* true if TF in eflags artificially */ -#define TIF_DEBUGCTLMSR 25 /* uses thread_struct.debugctlmsr */ -#define TIF_DS_AREA_MSR 26 /* uses thread_struct.ds_area_msr */ -#define TIF_BTS_TRACE_TS 27 /* record scheduling event timestamps */ -#define TIF_NOTSC 28 /* TSC is not accessible in userland */ - -#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) -#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) -#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) -#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) -#define _TIF_IRET (1 << TIF_IRET) -#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) -#define _TIF_SECCOMP (1 << TIF_SECCOMP) -#define _TIF_MCE_NOTIFY (1 << TIF_MCE_NOTIFY) -#define _TIF_HRTICK_RESCHED (1 << TIF_HRTICK_RESCHED) -#define _TIF_IA32 (1 << TIF_IA32) -#define _TIF_FORK (1 << TIF_FORK) -#define _TIF_ABI_PENDING (1 << TIF_ABI_PENDING) -#define _TIF_DEBUG (1 << TIF_DEBUG) -#define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP) -#define _TIF_FREEZE (1 << TIF_FREEZE) -#define _TIF_FORCED_TF (1 << TIF_FORCED_TF) -#define _TIF_DEBUGCTLMSR (1 << TIF_DEBUGCTLMSR) -#define _TIF_DS_AREA_MSR (1 << TIF_DS_AREA_MSR) -#define _TIF_BTS_TRACE_TS (1 << TIF_BTS_TRACE_TS) -#define _TIF_NOTSC (1 << TIF_NOTSC) - -/* work to do on interrupt/exception return */ -#define _TIF_WORK_MASK \ - (0x0000FFFF & \ - ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP|_TIF_SECCOMP)) -/* work to do on any return to user space */ -#define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP) - -#define _TIF_DO_NOTIFY_MASK \ - (_TIF_SIGPENDING|_TIF_SINGLESTEP|_TIF_MCE_NOTIFY|_TIF_HRTICK_RESCHED) - -/* flags to check in __switch_to() */ -#define _TIF_WORK_CTXSW \ - (_TIF_IO_BITMAP|_TIF_DEBUGCTLMSR|_TIF_DS_AREA_MSR|_TIF_BTS_TRACE_TS|_TIF_NOTSC) -#define _TIF_WORK_CTXSW_PREV _TIF_WORK_CTXSW -#define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW|_TIF_DEBUG) - -#define PREEMPT_ACTIVE 0x10000000 - -/* - * Thread-synchronous status. - * - * This is different from the flags in that nobody else - * ever touches our thread-synchronous status, so we don't - * have to worry about atomic accesses. - */ -#define TS_USEDFPU 0x0001 /* FPU was used by this task - this quantum (SMP) */ -#define TS_COMPAT 0x0002 /* 32bit syscall active */ -#define TS_POLLING 0x0004 /* true if in idle loop - and not sleeping */ -#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */ - -#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) - -#ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - set_bit(TIF_SIGPENDING, &ti->flags); -} -#endif /* !__ASSEMBLY__ */ - -#endif /* __KERNEL__ */ - -#endif /* _ASM_THREAD_INFO_H */ |