Simple merge of both thread_info_32.h and thread_info_64.h into thread_info.h. Comments for #ifndef __ASM_THREAD_INFO_H and #ifdef __KERNEL__ are the same. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>tirimbino
Christoph Lameter
17 years ago
committed by
Ingo Molnar
parent
1c7d06d419
commit
2052e8d40a
@ -1,196 +0,0 @@ |
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/* thread_info.h: i386 low-level thread information
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* |
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* Copyright (C) 2002 David Howells (dhowells@redhat.com) |
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* - Incorporating suggestions made by Linus Torvalds and Dave Miller |
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*/ |
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#ifndef _ASM_THREAD_INFO_H |
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#define _ASM_THREAD_INFO_H |
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#ifdef __KERNEL__ |
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#include <linux/compiler.h> |
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#include <asm/page.h> |
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#ifndef __ASSEMBLY__ |
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#include <asm/processor.h> |
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#endif |
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/*
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* low level task data that entry.S needs immediate access to |
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* - this struct should fit entirely inside of one cache line |
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* - this struct shares the supervisor stack pages |
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* - if the contents of this structure are changed, |
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* the assembly constants must also be changed |
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*/ |
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#ifndef __ASSEMBLY__ |
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struct thread_info { |
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struct task_struct *task; /* main task structure */ |
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struct exec_domain *exec_domain; /* execution domain */ |
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unsigned long flags; /* low level flags */ |
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unsigned long status; /* thread-synchronous flags */ |
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__u32 cpu; /* current CPU */ |
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int preempt_count; /* 0 => preemptable,
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<0 => BUG */ |
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mm_segment_t addr_limit; /* thread address space:
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0-0xBFFFFFFF user-thread |
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0-0xFFFFFFFF kernel-thread |
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*/ |
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void *sysenter_return; |
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struct restart_block restart_block; |
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unsigned long previous_esp; /* ESP of the previous stack in
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case of nested (IRQ) stacks |
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*/ |
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__u8 supervisor_stack[0]; |
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}; |
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#else /* !__ASSEMBLY__ */ |
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#include <asm/asm-offsets.h> |
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#endif |
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#define PREEMPT_ACTIVE 0x10000000 |
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#ifdef CONFIG_4KSTACKS |
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#define THREAD_SIZE (4096) |
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#else |
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#define THREAD_SIZE (8192) |
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#endif |
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#define STACK_WARN (THREAD_SIZE/8) |
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/*
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* macros/functions for gaining access to the thread information structure |
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* |
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* preempt_count needs to be 1 initially, until the scheduler is functional. |
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*/ |
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#ifndef __ASSEMBLY__ |
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#define INIT_THREAD_INFO(tsk) \ |
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{ \
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.task = &tsk, \
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.exec_domain = &default_exec_domain, \
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.flags = 0, \
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.cpu = 0, \
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.preempt_count = 1, \
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.addr_limit = KERNEL_DS, \
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.restart_block = { \
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.fn = do_no_restart_syscall, \
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}, \
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} |
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#define init_thread_info (init_thread_union.thread_info) |
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#define init_stack (init_thread_union.stack) |
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/* how to get the current stack pointer from C */ |
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register unsigned long current_stack_pointer asm("esp") __used; |
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/* how to get the thread information struct from C */ |
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static inline struct thread_info *current_thread_info(void) |
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{ |
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return (struct thread_info *) |
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(current_stack_pointer & ~(THREAD_SIZE - 1)); |
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} |
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/* thread information allocation */ |
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#ifdef CONFIG_DEBUG_STACK_USAGE |
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#define alloc_thread_info(tsk) ((struct thread_info *) \ |
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__get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(THREAD_SIZE))) |
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#else |
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#define alloc_thread_info(tsk) ((struct thread_info *) \ |
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__get_free_pages(GFP_KERNEL, get_order(THREAD_SIZE))) |
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#endif |
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#else /* !__ASSEMBLY__ */ |
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/* how to get the thread information struct from ASM */ |
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#define GET_THREAD_INFO(reg) \ |
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movl $-THREAD_SIZE, reg; \
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andl %esp, reg |
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/* use this one if reg already contains %esp */ |
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#define GET_THREAD_INFO_WITH_ESP(reg) \ |
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andl $-THREAD_SIZE, reg |
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#endif |
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/*
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* thread information flags |
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* - these are process state flags that various |
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* assembly files may need to access |
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* - pending work-to-be-done flags are in LSW |
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* - other flags in MSW |
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*/ |
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#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ |
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#define TIF_SIGPENDING 1 /* signal pending */ |
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#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ |
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#define TIF_SINGLESTEP 3 /* restore singlestep on return to |
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user mode */ |
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#define TIF_IRET 4 /* return with iret */ |
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#define TIF_SYSCALL_EMU 5 /* syscall emulation active */ |
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#define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */ |
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#define TIF_SECCOMP 7 /* secure computing */ |
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#define TIF_RESTORE_SIGMASK 8 /* restore signal mask in do_signal() */ |
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#define TIF_HRTICK_RESCHED 9 /* reprogram hrtick timer */ |
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#define TIF_MEMDIE 16 |
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#define TIF_DEBUG 17 /* uses debug registers */ |
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#define TIF_IO_BITMAP 18 /* uses I/O bitmap */ |
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#define TIF_FREEZE 19 /* is freezing for suspend */ |
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#define TIF_NOTSC 20 /* TSC is not accessible in userland */ |
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#define TIF_FORCED_TF 21 /* true if TF in eflags artificially */ |
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#define TIF_DEBUGCTLMSR 22 /* uses thread_struct.debugctlmsr */ |
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#define TIF_DS_AREA_MSR 23 /* uses thread_struct.ds_area_msr */ |
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#define TIF_BTS_TRACE_TS 24 /* record scheduling event timestamps */ |
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#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) |
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#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
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#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) |
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#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) |
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#define _TIF_IRET (1 << TIF_IRET) |
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#define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU) |
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#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) |
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#define _TIF_SECCOMP (1 << TIF_SECCOMP) |
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#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) |
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#define _TIF_HRTICK_RESCHED (1 << TIF_HRTICK_RESCHED) |
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#define _TIF_DEBUG (1 << TIF_DEBUG) |
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#define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP) |
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#define _TIF_FREEZE (1 << TIF_FREEZE) |
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#define _TIF_NOTSC (1 << TIF_NOTSC) |
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#define _TIF_FORCED_TF (1 << TIF_FORCED_TF) |
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#define _TIF_DEBUGCTLMSR (1 << TIF_DEBUGCTLMSR) |
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#define _TIF_DS_AREA_MSR (1 << TIF_DS_AREA_MSR) |
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#define _TIF_BTS_TRACE_TS (1 << TIF_BTS_TRACE_TS) |
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/* work to do on interrupt/exception return */ |
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#define _TIF_WORK_MASK \ |
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(0x0000FFFF & ~(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
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_TIF_SECCOMP | _TIF_SYSCALL_EMU)) |
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/* work to do on any return to u-space */ |
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#define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP) |
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/* flags to check in __switch_to() */ |
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#define _TIF_WORK_CTXSW \ |
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(_TIF_IO_BITMAP | _TIF_NOTSC | _TIF_DEBUGCTLMSR | \
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_TIF_DS_AREA_MSR | _TIF_BTS_TRACE_TS) |
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#define _TIF_WORK_CTXSW_PREV _TIF_WORK_CTXSW |
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#define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW | _TIF_DEBUG) |
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/*
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* Thread-synchronous status. |
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* |
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* This is different from the flags in that nobody else |
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* ever touches our thread-synchronous status, so we don't |
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* have to worry about atomic accesses. |
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*/ |
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#define TS_USEDFPU 0x0001 /* FPU was used by this task |
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this quantum (SMP) */ |
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#define TS_POLLING 0x0002 /* True if in idle loop |
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and not sleeping */ |
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#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) |
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#endif /* __KERNEL__ */ |
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#endif /* _ASM_THREAD_INFO_H */ |
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@ -1,186 +0,0 @@ |
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/* thread_info.h: x86_64 low-level thread information
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* |
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* Copyright (C) 2002 David Howells (dhowells@redhat.com) |
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* - Incorporating suggestions made by Linus Torvalds and Dave Miller |
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*/ |
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#ifndef _ASM_THREAD_INFO_H |
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#define _ASM_THREAD_INFO_H |
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#ifdef __KERNEL__ |
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#include <asm/page.h> |
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#include <asm/types.h> |
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#include <asm/pda.h> |
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/*
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* low level task data that entry.S needs immediate access to |
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* - this struct should fit entirely inside of one cache line |
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* - this struct shares the supervisor stack pages |
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*/ |
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#ifndef __ASSEMBLY__ |
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struct task_struct; |
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struct exec_domain; |
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#include <asm/processor.h> |
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struct thread_info { |
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struct task_struct *task; /* main task structure */ |
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struct exec_domain *exec_domain; /* execution domain */ |
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__u32 flags; /* low level flags */ |
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__u32 status; /* thread synchronous flags */ |
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__u32 cpu; /* current CPU */ |
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int preempt_count; /* 0 => preemptable,
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<0 => BUG */ |
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mm_segment_t addr_limit; |
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struct restart_block restart_block; |
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#ifdef CONFIG_IA32_EMULATION |
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void __user *sysenter_return; |
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#endif |
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}; |
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#endif |
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/*
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* macros/functions for gaining access to the thread information structure |
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* preempt_count needs to be 1 initially, until the scheduler is functional. |
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*/ |
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#ifndef __ASSEMBLY__ |
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#define INIT_THREAD_INFO(tsk) \ |
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{ \
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.task = &tsk, \
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.exec_domain = &default_exec_domain, \
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.flags = 0, \
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.cpu = 0, \
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.preempt_count = 1, \
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.addr_limit = KERNEL_DS, \
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.restart_block = { \
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.fn = do_no_restart_syscall, \
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}, \
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} |
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#define init_thread_info (init_thread_union.thread_info) |
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#define init_stack (init_thread_union.stack) |
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static inline struct thread_info *current_thread_info(void) |
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{ |
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struct thread_info *ti; |
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ti = (void *)(read_pda(kernelstack) + PDA_STACKOFFSET - THREAD_SIZE); |
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return ti; |
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} |
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/* do not use in interrupt context */ |
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static inline struct thread_info *stack_thread_info(void) |
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{ |
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struct thread_info *ti; |
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asm("andq %%rsp,%0; " : "=r" (ti) : "0" (~(THREAD_SIZE - 1))); |
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return ti; |
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} |
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/* thread information allocation */ |
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#ifdef CONFIG_DEBUG_STACK_USAGE |
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#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO) |
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#else |
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#define THREAD_FLAGS GFP_KERNEL |
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#endif |
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#define alloc_thread_info(tsk) \ |
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((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER)) |
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#else /* !__ASSEMBLY__ */ |
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/* how to get the thread information struct from ASM */ |
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#define GET_THREAD_INFO(reg) \ |
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movq %gs:pda_kernelstack,reg ; \
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subq $(THREAD_SIZE-PDA_STACKOFFSET),reg |
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#endif |
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/*
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* thread information flags |
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* - these are process state flags that various assembly files |
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* may need to access |
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* - pending work-to-be-done flags are in LSW |
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* - other flags in MSW |
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* Warning: layout of LSW is hardcoded in entry.S |
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*/ |
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#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ |
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#define TIF_SIGPENDING 2 /* signal pending */ |
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#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ |
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#define TIF_SINGLESTEP 4 /* reenable singlestep on user return*/ |
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#define TIF_IRET 5 /* force IRET */ |
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#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ |
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#define TIF_SECCOMP 8 /* secure computing */ |
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#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal */ |
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#define TIF_MCE_NOTIFY 10 /* notify userspace of an MCE */ |
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#define TIF_HRTICK_RESCHED 11 /* reprogram hrtick timer */ |
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/* 16 free */ |
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#define TIF_IA32 17 /* 32bit process */ |
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#define TIF_FORK 18 /* ret_from_fork */ |
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#define TIF_ABI_PENDING 19 |
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#define TIF_MEMDIE 20 |
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#define TIF_DEBUG 21 /* uses debug registers */ |
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#define TIF_IO_BITMAP 22 /* uses I/O bitmap */ |
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#define TIF_FREEZE 23 /* is freezing for suspend */ |
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#define TIF_FORCED_TF 24 /* true if TF in eflags artificially */ |
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#define TIF_DEBUGCTLMSR 25 /* uses thread_struct.debugctlmsr */ |
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#define TIF_DS_AREA_MSR 26 /* uses thread_struct.ds_area_msr */ |
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#define TIF_BTS_TRACE_TS 27 /* record scheduling event timestamps */ |
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#define TIF_NOTSC 28 /* TSC is not accessible in userland */ |
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#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) |
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#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
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#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) |
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#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) |
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#define _TIF_IRET (1 << TIF_IRET) |
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#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) |
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#define _TIF_SECCOMP (1 << TIF_SECCOMP) |
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#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) |
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#define _TIF_MCE_NOTIFY (1 << TIF_MCE_NOTIFY) |
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#define _TIF_HRTICK_RESCHED (1 << TIF_HRTICK_RESCHED) |
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#define _TIF_IA32 (1 << TIF_IA32) |
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#define _TIF_FORK (1 << TIF_FORK) |
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#define _TIF_ABI_PENDING (1 << TIF_ABI_PENDING) |
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#define _TIF_DEBUG (1 << TIF_DEBUG) |
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#define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP) |
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#define _TIF_FREEZE (1 << TIF_FREEZE) |
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#define _TIF_FORCED_TF (1 << TIF_FORCED_TF) |
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#define _TIF_DEBUGCTLMSR (1 << TIF_DEBUGCTLMSR) |
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#define _TIF_DS_AREA_MSR (1 << TIF_DS_AREA_MSR) |
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#define _TIF_BTS_TRACE_TS (1 << TIF_BTS_TRACE_TS) |
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#define _TIF_NOTSC (1 << TIF_NOTSC) |
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/* work to do on interrupt/exception return */ |
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#define _TIF_WORK_MASK \ |
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(0x0000FFFF & \
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~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP|_TIF_SECCOMP)) |
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/* work to do on any return to user space */ |
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#define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP) |
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#define _TIF_DO_NOTIFY_MASK \ |
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(_TIF_SIGPENDING|_TIF_SINGLESTEP|_TIF_MCE_NOTIFY|_TIF_HRTICK_RESCHED) |
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/* flags to check in __switch_to() */ |
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#define _TIF_WORK_CTXSW \ |
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(_TIF_IO_BITMAP|_TIF_DEBUGCTLMSR|_TIF_DS_AREA_MSR|_TIF_BTS_TRACE_TS|_TIF_NOTSC) |
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#define _TIF_WORK_CTXSW_PREV _TIF_WORK_CTXSW |
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#define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW|_TIF_DEBUG) |
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#define PREEMPT_ACTIVE 0x10000000 |
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/*
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* Thread-synchronous status. |
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* |
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* This is different from the flags in that nobody else |
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* ever touches our thread-synchronous status, so we don't |
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* have to worry about atomic accesses. |
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*/ |
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#define TS_USEDFPU 0x0001 /* FPU was used by this task |
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this quantum (SMP) */ |
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#define TS_COMPAT 0x0002 /* 32bit syscall active */ |
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#define TS_POLLING 0x0004 /* true if in idle loop |
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and not sleeping */ |
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#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) |
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#endif /* __KERNEL__ */ |
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#endif /* _ASM_THREAD_INFO_H */ |
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