#ifndef __ASSEMBLY__
struct task_struct;
struct exec_domain;
-#include <asm/mmsegment.h>
+#include <asm/processor.h>
struct thread_info {
struct task_struct *task; /* main task structure */
__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;
+ 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
#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;
+ 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)));
+ asm("andq %%rsp,%0; " : "=r" (ti) : "0" (~(THREAD_SIZE - 1)));
return ti;
}
/* thread information allocation */
#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk) \
- ({ \
- struct thread_info *ret; \
- \
- ret = ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER)); \
- if (ret) \
- memset(ret, 0, THREAD_SIZE); \
- ret; \
- })
+#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO)
#else
-#define alloc_thread_info(tsk) \
- ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER))
+#define THREAD_FLAGS GFP_KERNEL
#endif
+#define alloc_thread_info(tsk) \
+ ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER))
+
#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
#else /* !__ASSEMBLY__ */
/*
* 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
* Warning: layout of LSW is hardcoded in entry.S
#define TIF_SECCOMP 8 /* secure computing */
#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal */
#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_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_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_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
-#define _TIF_MCE_NOTIFY (1<<TIF_MCE_NOTIFY)
-#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 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_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_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
+#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)
/* work to do on interrupt/exception return */
-#define _TIF_WORK_MASK \
- (0x0000FFFF & ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP|_TIF_SECCOMP))
+#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_DEBUG|_TIF_IO_BITMAP)
+#define _TIF_WORK_CTXSW \
+ (_TIF_IO_BITMAP|_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)
#define PREEMPT_ACTIVE 0x10000000
* 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_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_POLLING 0x0004 /* true if in idle loop
+ and not sleeping */
#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
git.samba.org / sfrench / cifs-2.6.git / blobdiff