6 files changed, 21 insertions, 132 deletions

diff --git a/include/asm-arm26/atomic.h b/include/asm-arm26/atomic.h
index 3074b0e76343..1552c8653990 100644
--- a/include/asm-arm26/atomic.h
+++ b/include/asm-arm26/atomic.h
@@ -76,6 +76,8 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
         return ret;
 }
 
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
 static inline int atomic_add_unless(atomic_t *v, int a, int u)
 {
         int ret;
diff --git a/include/asm-arm26/cache.h b/include/asm-arm26/cache.h
index f52ca1b808cd..8c3abcf728fe 100644
--- a/include/asm-arm26/cache.h
+++ b/include/asm-arm26/cache.h
@@ -4,7 +4,8 @@
 #ifndef __ASMARM_CACHE_H
 #define __ASMARM_CACHE_H
 
-#define        L1_CACHE_BYTES  32
+#define        L1_CACHE_SHIFT  5
+#define        L1_CACHE_BYTES  (1 << L1_CACHE_SHIFT)
 #define        L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
 #define        SMP_CACHE_BYTES L1_CACHE_BYTES
 
diff --git a/include/asm-arm26/futex.h b/include/asm-arm26/futex.h
index 9feff4ce1424..6a332a9f099c 100644
--- a/include/asm-arm26/futex.h
+++ b/include/asm-arm26/futex.h
@@ -1,53 +1,6 @@
 #ifndef _ASM_FUTEX_H
 #define _ASM_FUTEX_H
 
-#ifdef __KERNEL__
+#include <asm-generic/futex.h>
 
-#include <linux/futex.h>
-#include <asm/errno.h>
-#include <asm/uaccess.h>
-
-static inline int
-futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
-{
-        int op = (encoded_op >> 28) & 7;
-        int cmp = (encoded_op >> 24) & 15;
-        int oparg = (encoded_op << 8) >> 20;
-        int cmparg = (encoded_op << 20) >> 20;
-        int oldval = 0, ret;
-        if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
-                oparg = 1 << oparg;
-
-        if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
-                return -EFAULT;
-
-        inc_preempt_count();
-
-        switch (op) {
-        case FUTEX_OP_SET:
-        case FUTEX_OP_ADD:
-        case FUTEX_OP_OR:
-        case FUTEX_OP_ANDN:
-        case FUTEX_OP_XOR:
-        default:
-                ret = -ENOSYS;
-        }
-
-        dec_preempt_count();
-
-        if (!ret) {
-                switch (cmp) {
-                case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break;
-                case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break;
-                case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break;
-                case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break;
-                case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break;
-                case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break;
-                default: ret = -ENOSYS;
-                }
-        }
-        return ret;
-}
-
-#endif
 #endif
diff --git a/include/asm-arm26/ioctl.h b/include/asm-arm26/ioctl.h
index 2cbb7d0e9dc6..b279fe06dfe5 100644
--- a/include/asm-arm26/ioctl.h
+++ b/include/asm-arm26/ioctl.h
@@ -1,74 +1 @@
-/*
- * linux/ioctl.h for Linux by H.H. Bergman.
- */
-
-#ifndef _ASMARM_IOCTL_H
-#define _ASMARM_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 /* _ASMARM_IOCTL_H */
+#include <asm-generic/ioctl.h>
diff --git a/include/asm-arm26/system.h b/include/asm-arm26/system.h
index f23fac1938f3..ca4ccfc4b578 100644
--- a/include/asm-arm26/system.h
+++ b/include/asm-arm26/system.h
@@ -111,10 +111,20 @@ extern struct task_struct *__switch_to(struct task_struct *, struct thread_info
 
 #define switch_to(prev,next,last)                                       \
 do {                                                                    \
-        last = __switch_to(prev,prev->thread_info,next->thread_info);   \
+        last = __switch_to(prev,task_thread_info(prev),task_thread_info(next)); \
 } while (0)
 
 /*
+ * On SMP systems, when the scheduler does migration-cost autodetection,
+ * it needs a way to flush as much of the CPU's caches as possible.
+ *
+ * TODO: fill this in!
+ */
+static inline void sched_cacheflush(void)
+{
+}
+
+/*
  * Save the current interrupt enable state & disable IRQs
  */
 #define local_irq_save(x)                               \
diff --git a/include/asm-arm26/thread_info.h b/include/asm-arm26/thread_info.h
index aff3e5699c64..9b367ebe515d 100644
--- a/include/asm-arm26/thread_info.h
+++ b/include/asm-arm26/thread_info.h
@@ -80,20 +80,16 @@ static inline struct thread_info *current_thread_info(void)
         return (struct thread_info *)(sp & ~0x1fff);
 }
 
-/* FIXME - PAGE_SIZE < 32K */
-#define THREAD_SIZE             (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
-#define __get_user_regs(x) (((struct pt_regs *)((unsigned long)(x) + THREAD_SIZE - 8)) - 1)
+#define THREAD_SIZE     PAGE_SIZE
+#define task_pt_regs(task) ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE - 8) - 1)
 
 extern struct thread_info *alloc_thread_info(struct task_struct *task);
 extern void free_thread_info(struct thread_info *);
 
-#define get_thread_info(ti)     get_task_struct((ti)->task)
-#define put_thread_info(ti)     put_task_struct((ti)->task)
-
 #define thread_saved_pc(tsk)    \
-        ((unsigned long)(pc_pointer((tsk)->thread_info->cpu_context.pc)))
+        ((unsigned long)(pc_pointer(task_thread_info(tsk)->cpu_context.pc)))
 #define thread_saved_fp(tsk)    \
-        ((unsigned long)((tsk)->thread_info->cpu_context.fp))
+        ((unsigned long)(task_thread_info(tsk)->cpu_context.fp))
 
 #else /* !__ASSEMBLY__ */