X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-i386%2Fthread_info.h;h=54d6d7aea938cf4fb1d8266418f9df1f790274c0;hb=e0ff8aa1acd079b70e796571917ae0449b7c465b;hp=4ef147f97281a24971b4a20eab0b9fc16d90a6ad;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git

diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h
index 4ef147f97..54d6d7aea 100644
--- a/include/asm-i386/thread_info.h
+++ b/include/asm-i386/thread_info.h
@@ -9,7 +9,7 @@
 
 #ifdef __KERNEL__
 
-#include <linux/config.h>
+#include <linux/compiler.h>
 #include <asm/page.h>
 
 #ifndef __ASSEMBLY__
@@ -30,13 +30,14 @@ struct thread_info {
 	unsigned long		flags;		/* low level flags */
 	unsigned long		status;		/* thread-synchronous flags */
 	__u32			cpu;		/* current CPU */
-	__s32			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
 						*/
+	void			*sysenter_return;
 	struct restart_block    restart_block;
 
 	unsigned long           previous_esp;   /* ESP of the previous stack in case
@@ -47,11 +48,11 @@ struct thread_info {
 
 #else /* !__ASSEMBLY__ */
 
-#include <asm/asm_offsets.h>
+#include <asm/asm-offsets.h>
 
 #endif
 
-#define PREEMPT_ACTIVE		0x4000000
+#define PREEMPT_ACTIVE		0x10000000
 #ifdef CONFIG_4KSTACKS
 #define THREAD_SIZE            (4096)
 #else
@@ -83,20 +84,13 @@ struct thread_info {
 #define init_stack		(init_thread_union.stack)
 
 
+/* how to get the current stack pointer from C */
+register unsigned long current_stack_pointer asm("esp") __attribute_used__;
+
 /* how to get the thread information struct from C */
 static inline struct thread_info *current_thread_info(void)
 {
-	struct thread_info *ti;
-	__asm__("andl %%esp,%0; ":"=r" (ti) : "0" (~(THREAD_SIZE - 1)));
-	return ti;
-}
-
-/* how to get the current stack pointer from C */
-static inline unsigned long current_stack_pointer(void)
-{
-	unsigned long ti;
-	__asm__("movl %%esp,%0; ":"=r" (ti) : );
-	return ti;
+	return (struct thread_info *)(current_stack_pointer & ~(THREAD_SIZE - 1));
 }
 
 /* thread information allocation */
@@ -115,8 +109,6 @@ static inline unsigned long current_stack_pointer(void)
 #endif
 
 #define free_thread_info(info)	kfree(info)
-#define get_thread_info(ti) get_task_struct((ti)->task)
-#define put_thread_info(ti) put_task_struct((ti)->task)
 
 #else /* !__ASSEMBLY__ */
 
@@ -143,8 +135,13 @@ static inline unsigned long current_stack_pointer(void)
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
 #define TIF_SINGLESTEP		4	/* restore singlestep on return to user mode */
 #define TIF_IRET		5	/* return with iret */
+#define TIF_SYSCALL_EMU		6	/* syscall emulation active */
 #define TIF_SYSCALL_AUDIT	7	/* syscall auditing active */
-#define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_SECCOMP		8	/* secure computing */
+#define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
+#define TIF_MEMDIE		16
+#define TIF_DEBUG		17	/* uses debug registers */
+#define TIF_IO_BITMAP		18	/* uses I/O bitmap */
 
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
@@ -152,13 +149,22 @@ static inline unsigned long current_stack_pointer(void)
 #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_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_SECCOMP		(1<<TIF_SECCOMP)
+#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
+#define _TIF_DEBUG		(1<<TIF_DEBUG)
+#define _TIF_IO_BITMAP		(1<<TIF_IO_BITMAP)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK \
-  (0x0000FFFF & ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT))
-#define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */
+  (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_DEBUG|_TIF_IO_BITMAP)
 
 /*
  * Thread-synchronous status.
@@ -168,6 +174,9 @@ static inline unsigned long current_stack_pointer(void)
  * 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 tsk_is_polling(t) ((t)->thread_info->status & TS_POLLING)
 
 #endif /* __KERNEL__ */