Pull release into acpica branch

6 files changed, 16 insertions, 90 deletions

diff --git a/include/asm-xtensa/atomic.h b/include/asm-xtensa/atomic.h
index e2ce06b..fe105a1 100644
--- a/include/asm-xtensa/atomic.h
+++ b/include/asm-xtensa/atomic.h
@@ -224,6 +224,7 @@ static inline int atomic_sub_return(int i, atomic_t * v)
 #define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
 
 /**
  * atomic_add_unless - add unless the number is a given value
diff --git a/include/asm-xtensa/ioctl.h b/include/asm-xtensa/ioctl.h
index 856c605..b279fe0 100644
--- a/include/asm-xtensa/ioctl.h
+++ b/include/asm-xtensa/ioctl.h
@@ -1,83 +1 @@
-/*
- * include/asm-xtensa/ioctl.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003 - 2005 Tensilica Inc.
- *
- * Derived from "include/asm-i386/ioctl.h"
- */
-
-#ifndef _XTENSA_IOCTL_H
-#define _XTENSA_IOCTL_H
-
-
-/* ioctl command encoding: 32 bits total, command in lower 16 bits,
- * size of the parameter structure in the lower 14 bits of the
- * upper 16 bits.
- * Encoding the size of the parameter structure in the ioctl request
- * is useful for catching programs compiled with old versions
- * and to avoid overwriting user space outside the user buffer area.
- * The highest 2 bits are reserved for indicating the ``access mode''.
- * NOTE: This limits the max parameter size to 16kB -1 !
- */
-
-/*
- * The following is for compatibility across the various Linux
- * platforms.  The i386 ioctl numbering scheme doesn't really enforce
- * a type field.  De facto, however, the top 8 bits of the lower 16
- * bits are indeed used as a type field, so we might just as well make
- * this explicit here.  Please be sure to use the decoding macros
- * below from now on.
- */
-#define _IOC_NRBITS	8
-#define _IOC_TYPEBITS	8
-#define _IOC_SIZEBITS	14
-#define _IOC_DIRBITS	2
-
-#define _IOC_NRMASK	((1 << _IOC_NRBITS)-1)
-#define _IOC_TYPEMASK	((1 << _IOC_TYPEBITS)-1)
-#define _IOC_SIZEMASK	((1 << _IOC_SIZEBITS)-1)
-#define _IOC_DIRMASK	((1 << _IOC_DIRBITS)-1)
-
-#define _IOC_NRSHIFT	0
-#define _IOC_TYPESHIFT	(_IOC_NRSHIFT+_IOC_NRBITS)
-#define _IOC_SIZESHIFT	(_IOC_TYPESHIFT+_IOC_TYPEBITS)
-#define _IOC_DIRSHIFT	(_IOC_SIZESHIFT+_IOC_SIZEBITS)
-
-/*
- * Direction bits.
- */
-#define _IOC_NONE	0U
-#define _IOC_WRITE	1U
-#define _IOC_READ	2U
-
-#define _IOC(dir,type,nr,size) \
-	(((dir)  << _IOC_DIRSHIFT) | \
-	 ((type) << _IOC_TYPESHIFT) | \
-	 ((nr)   << _IOC_NRSHIFT) | \
-	 ((size) << _IOC_SIZESHIFT))
-
-/* used to create numbers */
-#define _IO(type,nr)		_IOC(_IOC_NONE,(type),(nr),0)
-#define _IOR(type,nr,size)	_IOC(_IOC_READ,(type),(nr),sizeof(size))
-#define _IOW(type,nr,size)	_IOC(_IOC_WRITE,(type),(nr),sizeof(size))
-#define _IOWR(type,nr,size)	_IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
-
-/* used to decode ioctl numbers.. */
-#define _IOC_DIR(nr)		(((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
-#define _IOC_TYPE(nr)		(((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
-#define _IOC_NR(nr)		(((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
-#define _IOC_SIZE(nr)		(((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
-
-/* ...and for the drivers/sound files... */
-
-#define IOC_IN		(_IOC_WRITE << _IOC_DIRSHIFT)
-#define IOC_OUT		(_IOC_READ << _IOC_DIRSHIFT)
-#define IOC_INOUT	((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
-#define IOCSIZE_MASK	(_IOC_SIZEMASK << _IOC_SIZESHIFT)
-#define IOCSIZE_SHIFT	(_IOC_SIZESHIFT)
-
-#endif
+#include <asm-generic/ioctl.h>
diff --git a/include/asm-xtensa/mutex.h b/include/asm-xtensa/mutex.h
new file mode 100644
index 0000000..458c1f7
--- /dev/null
+++ b/include/asm-xtensa/mutex.h
@@ -0,0 +1,9 @@
+/*
+ * Pull in the generic implementation for the mutex fastpath.
+ *
+ * TODO: implement optimized primitives instead, or leave the generic
+ * implementation in place, or pick the atomic_xchg() based generic
+ * implementation. (see asm-generic/mutex-xchg.h for details)
+ */
+
+#include <asm-generic/mutex-dec.h>
diff --git a/include/asm-xtensa/processor.h b/include/asm-xtensa/processor.h
index 9cab5e4..d1d72ad 100644
--- a/include/asm-xtensa/processor.h
+++ b/include/asm-xtensa/processor.h
@@ -184,12 +184,12 @@ extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 #define release_segments(mm)	do { } while(0)
 #define forget_segments()	do { } while (0)
 
-#define thread_saved_pc(tsk)	(xtensa_pt_regs(tsk)->pc)
+#define thread_saved_pc(tsk)	(task_pt_regs(tsk)->pc)
 
 extern unsigned long get_wchan(struct task_struct *p);
 
-#define KSTK_EIP(tsk)		(xtensa_pt_regs(tsk)->pc)
-#define KSTK_ESP(tsk)		(xtensa_pt_regs(tsk)->areg[1])
+#define KSTK_EIP(tsk)		(task_pt_regs(tsk)->pc)
+#define KSTK_ESP(tsk)		(task_pt_regs(tsk)->areg[1])
 
 #define cpu_relax()  do { } while (0)
 
diff --git a/include/asm-xtensa/ptrace.h b/include/asm-xtensa/ptrace.h
index aa4fd7f..a5ac71a 100644
--- a/include/asm-xtensa/ptrace.h
+++ b/include/asm-xtensa/ptrace.h
@@ -113,8 +113,8 @@ struct pt_regs {
 };
 
 #ifdef __KERNEL__
-# define xtensa_pt_regs(tsk) ((struct pt_regs*) \
-  (((long)(tsk)->thread_info + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4)) - 1)
+# define task_pt_regs(tsk) ((struct pt_regs*) \
+  (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
 # define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
 # define instruction_pointer(regs) ((regs)->pc)
 extern void show_regs(struct pt_regs *);
diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h
index af208d4..5ae34ab 100644
--- a/include/asm-xtensa/thread_info.h
+++ b/include/asm-xtensa/thread_info.h
@@ -93,8 +93,6 @@ static inline struct thread_info *current_thread_info(void)
 /* thread information allocation */
 #define alloc_thread_info(tsk) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
 #define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
-#define get_thread_info(ti) get_task_struct((ti)->task)
-#define put_thread_info(ti) put_task_struct((ti)->task)
 
 #else /* !__ASSEMBLY__ */