diff options
Diffstat (limited to 'include/asm-x86/thread_info_32.h')
| -rw-r--r-- | include/asm-x86/thread_info_32.h | 90 |
1 files changed, 46 insertions, 44 deletions
diff --git a/include/asm-x86/thread_info_32.h b/include/asm-x86/thread_info_32.h index 5bd508260ff..53185996209 100644 --- a/include/asm-x86/thread_info_32.h +++ b/include/asm-x86/thread_info_32.h @@ -20,7 +20,8 @@ * 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 - * - if the contents of this structure are changed, the assembly constants must also be changed + * - if the contents of this structure are changed, + * the assembly constants must also be changed */ #ifndef __ASSEMBLY__ @@ -30,18 +31,16 @@ struct thread_info { unsigned long flags; /* low level flags */ unsigned long status; /* thread-synchronous flags */ __u32 cpu; /* current CPU */ - int preempt_count; /* 0 => preemptable, <0 => BUG */ - - + int preempt_count; /* 0 => preemptable, + <0 => BUG */ mm_segment_t addr_limit; /* thread address space: - 0-0xBFFFFFFF for user-thead - 0-0xFFFFFFFF for kernel-thread + 0-0xBFFFFFFF user-thread + 0-0xFFFFFFFF kernel-thread */ void *sysenter_return; struct restart_block restart_block; - - unsigned long previous_esp; /* ESP of the previous stack in case - of nested (IRQ) stacks + unsigned long previous_esp; /* ESP of the previous stack in + case of nested (IRQ) stacks */ __u8 supervisor_stack[0]; }; @@ -90,24 +89,23 @@ register unsigned long current_stack_pointer asm("esp") __used; /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) { - return (struct thread_info *)(current_stack_pointer & ~(THREAD_SIZE - 1)); + return (struct thread_info *) + (current_stack_pointer & ~(THREAD_SIZE - 1)); } /* thread information allocation */ #ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL| __GFP_ZERO, get_order(THREAD_SIZE))) +#define alloc_thread_info(tsk) ((struct thread_info *) \ + __get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(THREAD_SIZE))) #else -#define alloc_thread_info(tsk) ((struct thread_info *) \ +#define alloc_thread_info(tsk) ((struct thread_info *) \ __get_free_pages(GFP_KERNEL, get_order(THREAD_SIZE))) #endif -#define free_thread_info(info) free_pages((unsigned long)(info), get_order(THREAD_SIZE)) - #else /* !__ASSEMBLY__ */ /* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg) \ +#define GET_THREAD_INFO(reg) \ movl $-THREAD_SIZE, reg; \ andl %esp, reg @@ -119,14 +117,16 @@ static inline struct thread_info *current_thread_info(void) /* * thread information flags - * - these are process state flags that various assembly files may need to access + * - 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 */ #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ #define TIF_SIGPENDING 1 /* signal pending */ #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */ +#define TIF_SINGLESTEP 3 /* restore singlestep on return to + user mode */ #define TIF_IRET 4 /* return with iret */ #define TIF_SYSCALL_EMU 5 /* syscall emulation active */ #define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */ @@ -143,36 +143,36 @@ static inline struct thread_info *current_thread_info(void) #define TIF_DS_AREA_MSR 23 /* uses thread_struct.ds_area_msr */ #define TIF_BTS_TRACE_TS 24 /* record scheduling event timestamps */ -#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) -#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) -#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) -#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) -#define _TIF_IRET (1<<TIF_IRET) -#define _TIF_SYSCALL_EMU (1<<TIF_SYSCALL_EMU) -#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) -#define _TIF_SECCOMP (1<<TIF_SECCOMP) -#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) -#define _TIF_HRTICK_RESCHED (1<<TIF_HRTICK_RESCHED) -#define _TIF_DEBUG (1<<TIF_DEBUG) -#define _TIF_IO_BITMAP (1<<TIF_IO_BITMAP) -#define _TIF_FREEZE (1<<TIF_FREEZE) -#define _TIF_NOTSC (1<<TIF_NOTSC) -#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_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) +#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) +#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) +#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) +#define _TIF_IRET (1 << TIF_IRET) +#define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU) +#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) +#define _TIF_SECCOMP (1 << TIF_SECCOMP) +#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) +#define _TIF_HRTICK_RESCHED (1 << TIF_HRTICK_RESCHED) +#define _TIF_DEBUG (1 << TIF_DEBUG) +#define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP) +#define _TIF_FREEZE (1 << TIF_FREEZE) +#define _TIF_NOTSC (1 << TIF_NOTSC) +#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) /* work to do on interrupt/exception return */ -#define _TIF_WORK_MASK \ - (0x0000FFFF & ~(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ - _TIF_SECCOMP | _TIF_SYSCALL_EMU)) +#define _TIF_WORK_MASK \ + (0x0000FFFF & ~(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ + _TIF_SECCOMP | _TIF_SYSCALL_EMU)) /* work to do on any return to u-space */ #define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP) /* flags to check in __switch_to() */ -#define _TIF_WORK_CTXSW \ - (_TIF_IO_BITMAP | _TIF_NOTSC | _TIF_DEBUGCTLMSR | \ - _TIF_DS_AREA_MSR | _TIF_BTS_TRACE_TS) +#define _TIF_WORK_CTXSW \ + (_TIF_IO_BITMAP | _TIF_NOTSC | _TIF_DEBUGCTLMSR | \ + _TIF_DS_AREA_MSR | _TIF_BTS_TRACE_TS) #define _TIF_WORK_CTXSW_PREV _TIF_WORK_CTXSW #define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW | _TIF_DEBUG) @@ -184,8 +184,10 @@ static inline struct thread_info *current_thread_info(void) * 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_POLLING 0x0002 /* True if in idle loop and not sleeping */ +#define TS_USEDFPU 0x0001 /* FPU was used by this task + this quantum (SMP) */ +#define TS_POLLING 0x0002 /* True if in idle loop + and not sleeping */ #define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING) |