14 files changed, 487 insertions, 47 deletions

diff --git a/include/asm-m32r/a.out.h b/include/asm-m32r/a.out.h
index 6a1b5d42f328..ab150f5c1666 100644
--- a/include/asm-m32r/a.out.h
+++ b/include/asm-m32r/a.out.h
@@ -17,11 +17,4 @@ struct exec
 #define N_DRSIZE(a)     ((a).a_drsize)
 #define N_SYMSIZE(a)    ((a).a_syms)
 
-#ifdef __KERNEL__
-
-#define STACK_TOP       TASK_SIZE
-#define STACK_TOP_MAX   STACK_TOP
-
-#endif
-
 #endif /* _ASM_M32R_A_OUT_H */
diff --git a/include/asm-m32r/delay.h b/include/asm-m32r/delay.h
index 164448d23850..9dd9e999ea69 100644
--- a/include/asm-m32r/delay.h
+++ b/include/asm-m32r/delay.h
@@ -12,7 +12,7 @@ extern void __bad_ndelay(void);
 
 extern void __udelay(unsigned long usecs);
 extern void __ndelay(unsigned long nsecs);
-extern void __const_udelay(unsigned long usecs);
+extern void __const_udelay(unsigned long xloops);
 extern void __delay(unsigned long loops);
 
 #define udelay(n) (__builtin_constant_p(n) ? \
diff --git a/include/asm-m32r/elf.h b/include/asm-m32r/elf.h
index bbee8b25d175..67bcd77494a5 100644
--- a/include/asm-m32r/elf.h
+++ b/include/asm-m32r/elf.h
@@ -129,8 +129,6 @@ typedef elf_fpreg_t elf_fpregset_t;
    intent than poking at uname or /proc/cpuinfo.  */
 #define ELF_PLATFORM    (NULL)
 
-#ifdef __KERNEL__
 #define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX)
-#endif
 
 #endif  /* _ASM_M32R__ELF_H */
diff --git a/include/asm-m32r/irq.h b/include/asm-m32r/irq.h
index 2f93f4743add..242028b4d86a 100644
--- a/include/asm-m32r/irq.h
+++ b/include/asm-m32r/irq.h
@@ -3,7 +3,7 @@
 #define _ASM_M32R_IRQ_H
 
 
-#if defined(CONFIG_PLAT_M32700UT_Alpha) || defined(CONFIG_PLAT_USRV)
+#if defined(CONFIG_PLAT_USRV)
 /*
  * IRQ definitions for M32700UT
  *  M32700 Chip: 64 interrupts
diff --git a/include/asm-m32r/local.h b/include/asm-m32r/local.h
index def29d095740..22256d138630 100644
--- a/include/asm-m32r/local.h
+++ b/include/asm-m32r/local.h
@@ -1,6 +1,366 @@
 #ifndef __M32R_LOCAL_H
 #define __M32R_LOCAL_H
 
-#include <asm-generic/local.h>
+/*
+ *  linux/include/asm-m32r/local.h
+ *
+ *  M32R version:
+ *    Copyright (C) 2001, 2002  Hitoshi Yamamoto
+ *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
+ *    Copyright (C) 2007  Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ */
+
+#include <linux/percpu.h>
+#include <asm/assembler.h>
+#include <asm/system.h>
+#include <asm/local.h>
+
+/*
+ * Atomic operations that C can't guarantee us.  Useful for
+ * resource counting etc..
+ */
+
+/*
+ * Make sure gcc doesn't try to be clever and move things around
+ * on us. We need to use _exactly_ the address the user gave us,
+ * not some alias that contains the same information.
+ */
+typedef struct { volatile int counter; } local_t;
+
+#define LOCAL_INIT(i)   { (i) }
+
+/**
+ * local_read - read local variable
+ * @l: pointer of type local_t
+ *
+ * Atomically reads the value of @l.
+ */
+#define local_read(l)   ((l)->counter)
+
+/**
+ * local_set - set local variable
+ * @l: pointer of type local_t
+ * @i: required value
+ *
+ * Atomically sets the value of @l to @i.
+ */
+#define local_set(l, i) (((l)->counter) = (i))
+
+/**
+ * local_add_return - add long to local variable and return it
+ * @i: long value to add
+ * @l: pointer of type local_t
+ *
+ * Atomically adds @i to @l and return (@i + @l).
+ */
+static inline long local_add_return(long i, local_t *l)
+{
+        unsigned long flags;
+        long result;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                "# local_add_return             \n\t"
+                DCACHE_CLEAR("%0", "r4", "%1")
+                "ld %0, @%1;                    \n\t"
+                "add    %0, %2;                 \n\t"
+                "st %0, @%1;                    \n\t"
+                : "=&r" (result)
+                : "r" (&l->counter), "r" (i)
+                : "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                , "r4"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+        );
+        local_irq_restore(flags);
+
+        return result;
+}
+
+/**
+ * local_sub_return - subtract long from local variable and return it
+ * @i: long value to subtract
+ * @l: pointer of type local_t
+ *
+ * Atomically subtracts @i from @l and return (@l - @i).
+ */
+static inline long local_sub_return(long i, local_t *l)
+{
+        unsigned long flags;
+        long result;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                "# local_sub_return             \n\t"
+                DCACHE_CLEAR("%0", "r4", "%1")
+                "ld %0, @%1;                    \n\t"
+                "sub    %0, %2;                 \n\t"
+                "st %0, @%1;                    \n\t"
+                : "=&r" (result)
+                : "r" (&l->counter), "r" (i)
+                : "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                , "r4"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+        );
+        local_irq_restore(flags);
+
+        return result;
+}
+
+/**
+ * local_add - add long to local variable
+ * @i: long value to add
+ * @l: pointer of type local_t
+ *
+ * Atomically adds @i to @l.
+ */
+#define local_add(i, l) ((void) local_add_return((i), (l)))
+
+/**
+ * local_sub - subtract the local variable
+ * @i: long value to subtract
+ * @l: pointer of type local_t
+ *
+ * Atomically subtracts @i from @l.
+ */
+#define local_sub(i, l) ((void) local_sub_return((i), (l)))
+
+/**
+ * local_sub_and_test - subtract value from variable and test result
+ * @i: integer value to subtract
+ * @l: pointer of type local_t
+ *
+ * Atomically subtracts @i from @l and returns
+ * true if the result is zero, or false for all
+ * other cases.
+ */
+#define local_sub_and_test(i, l) (local_sub_return((i), (l)) == 0)
+
+/**
+ * local_inc_return - increment local variable and return it
+ * @l: pointer of type local_t
+ *
+ * Atomically increments @l by 1 and returns the result.
+ */
+static inline long local_inc_return(local_t *l)
+{
+        unsigned long flags;
+        long result;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                "# local_inc_return             \n\t"
+                DCACHE_CLEAR("%0", "r4", "%1")
+                "ld %0, @%1;                    \n\t"
+                "addi   %0, #1;                 \n\t"
+                "st %0, @%1;                    \n\t"
+                : "=&r" (result)
+                : "r" (&l->counter)
+                : "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                , "r4"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+        );
+        local_irq_restore(flags);
+
+        return result;
+}
+
+/**
+ * local_dec_return - decrement local variable and return it
+ * @l: pointer of type local_t
+ *
+ * Atomically decrements @l by 1 and returns the result.
+ */
+static inline long local_dec_return(local_t *l)
+{
+        unsigned long flags;
+        long result;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                "# local_dec_return             \n\t"
+                DCACHE_CLEAR("%0", "r4", "%1")
+                "ld %0, @%1;                    \n\t"
+                "addi   %0, #-1;                \n\t"
+                "st %0, @%1;                    \n\t"
+                : "=&r" (result)
+                : "r" (&l->counter)
+                : "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                , "r4"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+        );
+        local_irq_restore(flags);
+
+        return result;
+}
+
+/**
+ * local_inc - increment local variable
+ * @l: pointer of type local_t
+ *
+ * Atomically increments @l by 1.
+ */
+#define local_inc(l) ((void)local_inc_return(l))
+
+/**
+ * local_dec - decrement local variable
+ * @l: pointer of type local_t
+ *
+ * Atomically decrements @l by 1.
+ */
+#define local_dec(l) ((void)local_dec_return(l))
+
+/**
+ * local_inc_and_test - increment and test
+ * @l: pointer of type local_t
+ *
+ * Atomically increments @l by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+#define local_inc_and_test(l) (local_inc_return(l) == 0)
+
+/**
+ * local_dec_and_test - decrement and test
+ * @l: pointer of type local_t
+ *
+ * Atomically decrements @l by 1 and
+ * returns true if the result is 0, or false for all
+ * other cases.
+ */
+#define local_dec_and_test(l) (local_dec_return(l) == 0)
+
+/**
+ * local_add_negative - add and test if negative
+ * @l: pointer of type local_t
+ * @i: integer value to add
+ *
+ * Atomically adds @i to @l and returns true
+ * if the result is negative, or false when
+ * result is greater than or equal to zero.
+ */
+#define local_add_negative(i, l) (local_add_return((i), (l)) < 0)
+
+#define local_cmpxchg(l, o, n) (cmpxchg_local(&((l)->counter), (o), (n)))
+#define local_xchg(v, new) (xchg_local(&((l)->counter), new))
+
+/**
+ * local_add_unless - add unless the number is a given value
+ * @l: pointer of type local_t
+ * @a: the amount to add to l...
+ * @u: ...unless l is equal to u.
+ *
+ * Atomically adds @a to @l, so long as it was not @u.
+ * Returns non-zero if @l was not @u, and zero otherwise.
+ */
+static inline int local_add_unless(local_t *l, long a, long u)
+{
+        long c, old;
+        c = local_read(l);
+        for (;;) {
+                if (unlikely(c == (u)))
+                        break;
+                old = local_cmpxchg((l), c, c + (a));
+                if (likely(old == c))
+                        break;
+                c = old;
+        }
+        return c != (u);
+}
+
+#define local_inc_not_zero(l) local_add_unless((l), 1, 0)
+
+static inline void local_clear_mask(unsigned long  mask, local_t *addr)
+{
+        unsigned long flags;
+        unsigned long tmp;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                "# local_clear_mask             \n\t"
+                DCACHE_CLEAR("%0", "r5", "%1")
+                "ld %0, @%1;                    \n\t"
+                "and    %0, %2;                 \n\t"
+                "st %0, @%1;                    \n\t"
+                : "=&r" (tmp)
+                : "r" (addr), "r" (~mask)
+                : "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                , "r5"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+        );
+        local_irq_restore(flags);
+}
+
+static inline void local_set_mask(unsigned long  mask, local_t *addr)
+{
+        unsigned long flags;
+        unsigned long tmp;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                "# local_set_mask               \n\t"
+                DCACHE_CLEAR("%0", "r5", "%1")
+                "ld %0, @%1;                    \n\t"
+                "or     %0, %2;                 \n\t"
+                "st %0, @%1;                    \n\t"
+                : "=&r" (tmp)
+                : "r" (addr), "r" (mask)
+                : "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                , "r5"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+        );
+        local_irq_restore(flags);
+}
+
+/* Atomic operations are already serializing on m32r */
+#define smp_mb__before_local_dec()      barrier()
+#define smp_mb__after_local_dec()       barrier()
+#define smp_mb__before_local_inc()      barrier()
+#define smp_mb__after_local_inc()       barrier()
+
+/* Use these for per-cpu local_t variables: on some archs they are
+ * much more efficient than these naive implementations.  Note they take
+ * a variable, not an address.
+ */
+
+#define __local_inc(l)          ((l)->a.counter++)
+#define __local_dec(l)          ((l)->a.counter++)
+#define __local_add(i, l)       ((l)->a.counter += (i))
+#define __local_sub(i, l)       ((l)->a.counter -= (i))
+
+/* Use these for per-cpu local_t variables: on some archs they are
+ * much more efficient than these naive implementations.  Note they take
+ * a variable, not an address.
+ */
+
+/* Need to disable preemption for the cpu local counters otherwise we could
+   still access a variable of a previous CPU in a non local way. */
+#define cpu_local_wrap_v(l)             \
+        ({ local_t res__;               \
+           preempt_disable();           \
+           res__ = (l);                 \
+           preempt_enable();            \
+           res__; })
+#define cpu_local_wrap(l)               \
+        ({ preempt_disable();           \
+           l;                           \
+           preempt_enable(); })         \
+
+#define cpu_local_read(l)    cpu_local_wrap_v(local_read(&__get_cpu_var(l)))
+#define cpu_local_set(l, i)  cpu_local_wrap(local_set(&__get_cpu_var(l), (i)))
+#define cpu_local_inc(l)     cpu_local_wrap(local_inc(&__get_cpu_var(l)))
+#define cpu_local_dec(l)     cpu_local_wrap(local_dec(&__get_cpu_var(l)))
+#define cpu_local_add(i, l)  cpu_local_wrap(local_add((i), &__get_cpu_var(l)))
+#define cpu_local_sub(i, l)  cpu_local_wrap(local_sub((i), &__get_cpu_var(l)))
+
+#define __cpu_local_inc(l)      cpu_local_inc(l)
+#define __cpu_local_dec(l)      cpu_local_dec(l)
+#define __cpu_local_add(i, l)   cpu_local_add((i), (l))
+#define __cpu_local_sub(i, l)   cpu_local_sub((i), (l))
 
 #endif /* __M32R_LOCAL_H */
diff --git a/include/asm-m32r/m32700ut/m32700ut_pld.h b/include/asm-m32r/m32700ut/m32700ut_pld.h
index d39121279a1a..57623beb44cb 100644
--- a/include/asm-m32r/m32700ut/m32700ut_pld.h
+++ b/include/asm-m32r/m32700ut/m32700ut_pld.h
@@ -13,9 +13,7 @@
  * this archive for more details.
  */
 
-#if defined(CONFIG_PLAT_M32700UT_Alpha)
-#define PLD_PLAT_BASE           0x08c00000
-#elif defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV)
+#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV)
 #define PLD_PLAT_BASE           0x04c00000
 #else
 #error "no platform configuration"
diff --git a/include/asm-m32r/page.h b/include/asm-m32r/page.h
index 04fd183a2c58..8a677f3fca68 100644
--- a/include/asm-m32r/page.h
+++ b/include/asm-m32r/page.h
@@ -6,7 +6,6 @@
 #define PAGE_SIZE       (1UL << PAGE_SHIFT)
 #define PAGE_MASK       (~(PAGE_SIZE-1))
 
-#ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
 extern void clear_page(void *to);
@@ -29,6 +28,7 @@ typedef struct { unsigned long pgd; } pgd_t;
 #define PTE_MASK        PAGE_MASK
 
 typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
 
 #define pmd_val(x)      ((x).pmd)
 #define pgd_val(x)      ((x).pgd)
@@ -87,5 +87,4 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>
 
-#endif /* __KERNEL__ */
 #endif /* _ASM_M32R_PAGE_H */
diff --git a/include/asm-m32r/param.h b/include/asm-m32r/param.h
index 3e14026e39cd..94c770196048 100644
--- a/include/asm-m32r/param.h
+++ b/include/asm-m32r/param.h
@@ -2,7 +2,7 @@
 #define _ASM_M32R_PARAM_H
 
 #ifdef __KERNEL__
-# define HZ             100             /* Internal kernel timer frequency */
+# define HZ             CONFIG_HZ       /* Internal kernel timer frequency */
 # define USER_HZ        100             /* .. some user interfaces are in "ticks" */
 # define CLOCKS_PER_SEC (USER_HZ)       /* like times() */
 #endif
diff --git a/include/asm-m32r/pgalloc.h b/include/asm-m32r/pgalloc.h
index 943ba63c1ebc..f11a2b909cdb 100644
--- a/include/asm-m32r/pgalloc.h
+++ b/include/asm-m32r/pgalloc.h
@@ -9,10 +9,11 @@
         set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
 
 static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
-        struct page *pte)
+        pgtable_t pte)
 {
         set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
 }
+#define pmd_pgtable(pmd) pmd_page(pmd)
 
 /*
  * Allocate and free page tables.
@@ -24,7 +25,7 @@ static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
         return pgd;
 }
 
-static __inline__ void pgd_free(pgd_t *pgd)
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 {
         free_page((unsigned long)pgd);
 }
@@ -37,26 +38,27 @@ static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
         return pte;
 }
 
-static __inline__ struct page *pte_alloc_one(struct mm_struct *mm,
+static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
         unsigned long address)
 {
         struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
 
-
+        pgtable_page_ctor(pte);
         return pte;
 }
 
-static __inline__ void pte_free_kernel(pte_t *pte)
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
 {
         free_page((unsigned long)pte);
 }
 
-static __inline__ void pte_free(struct page *pte)
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 {
+        pgtable_page_dtor(pte);
         __free_page(pte);
 }
 
-#define __pte_free_tlb(tlb, pte)        pte_free((pte))
+#define __pte_free_tlb(tlb, pte)        pte_free((tlb)->mm, (pte))
 
 /*
  * allocating and freeing a pmd is trivial: the 1-entry pmd is
@@ -65,7 +67,7 @@ static __inline__ void pte_free(struct page *pte)
  */
 
 #define pmd_alloc_one(mm, addr)         ({ BUG(); ((pmd_t *)2); })
-#define pmd_free(x)                     do { } while (0)
+#define pmd_free(mm, x)                 do { } while (0)
 #define __pmd_free_tlb(tlb, x)          do { } while (0)
 #define pgd_populate(mm, pmd, pte)      BUG()
 
diff --git a/include/asm-m32r/posix_types.h b/include/asm-m32r/posix_types.h
index 1caac65d208f..b309c5858637 100644
--- a/include/asm-m32r/posix_types.h
+++ b/include/asm-m32r/posix_types.h
@@ -39,14 +39,10 @@ typedef long long	__kernel_loff_t;
 #endif
 
 typedef struct {
-#if defined(__KERNEL__) || defined(__USE_ALL)
         int     val[2];
-#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */
-        int     __val[2];
-#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */
 } __kernel_fsid_t;
 
-#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
+#if defined(__KERNEL__)
 
 #undef  __FD_SET
 static __inline__ void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
@@ -117,6 +113,6 @@ static __inline__ void __FD_ZERO(__kernel_fd_set *__p)
         }
 }
 
-#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */
+#endif /* defined(__KERNEL__) */
 
 #endif  /* _ASM_M32R_POSIX_TYPES_H */
diff --git a/include/asm-m32r/processor.h b/include/asm-m32r/processor.h
index 32755bf136de..1a997fc148a2 100644
--- a/include/asm-m32r/processor.h
+++ b/include/asm-m32r/processor.h
@@ -60,6 +60,11 @@ extern struct cpuinfo_m32r cpu_data[];
 #define TASK_SIZE  (0x00400000UL)
 #endif
 
+#ifdef __KERNEL__
+#define STACK_TOP       TASK_SIZE
+#define STACK_TOP_MAX   STACK_TOP
+#endif
+
 /* This decides where the kernel will search for a free chunk of vm
  * space during mmap's.
  */
diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h
index 2365de5c2955..70a57c8c002b 100644
--- a/include/asm-m32r/system.h
+++ b/include/asm-m32r/system.h
@@ -121,12 +121,13 @@ static inline void local_irq_disable(void)
 
 #define nop()   __asm__ __volatile__ ("nop" : : )
 
-#define xchg(ptr,x) \
-        ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+#define xchg(ptr, x)                                                    \
+        ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+#define xchg_local(ptr, x)                                              \
+        ((__typeof__(*(ptr)))__xchg_local((unsigned long)(x), (ptr),    \
+                        sizeof(*(ptr))))
 
-#ifdef CONFIG_SMP
 extern void  __xchg_called_with_bad_pointer(void);
-#endif
 
 #ifdef CONFIG_CHIP_M32700_TS1
 #define DCACHE_CLEAR(reg0, reg1, addr)                          \
@@ -146,7 +147,7 @@ extern void  __xchg_called_with_bad_pointer(void);
 #endif  /* CONFIG_CHIP_M32700_TS1 */
 
 static __always_inline unsigned long
-__xchg(unsigned long x, volatile void * ptr, int size)
+__xchg(unsigned long x, volatile void *ptr, int size)
 {
         unsigned long flags;
         unsigned long tmp = 0;
@@ -186,9 +187,45 @@ __xchg(unsigned long x, volatile void * ptr, int size)
 #endif  /* CONFIG_CHIP_M32700_TS1 */
                 );
                 break;
+#endif  /* CONFIG_SMP */
+        default:
+                __xchg_called_with_bad_pointer();
+        }
+
+        local_irq_restore(flags);
+
+        return (tmp);
+}
+
+static __always_inline unsigned long
+__xchg_local(unsigned long x, volatile void *ptr, int size)
+{
+        unsigned long flags;
+        unsigned long tmp = 0;
+
+        local_irq_save(flags);
+
+        switch (size) {
+        case 1:
+                __asm__ __volatile__ (
+                        "ldb    %0, @%2 \n\t"
+                        "stb    %1, @%2 \n\t"
+                        : "=&r" (tmp) : "r" (x), "r" (ptr) : "memory");
+                break;
+        case 2:
+                __asm__ __volatile__ (
+                        "ldh    %0, @%2 \n\t"
+                        "sth    %1, @%2 \n\t"
+                        : "=&r" (tmp) : "r" (x), "r" (ptr) : "memory");
+                break;
+        case 4:
+                __asm__ __volatile__ (
+                        "ld     %0, @%2 \n\t"
+                        "st     %1, @%2 \n\t"
+                        : "=&r" (tmp) : "r" (x), "r" (ptr) : "memory");
+                break;
         default:
                 __xchg_called_with_bad_pointer();
-#endif  /* CONFIG_SMP */
         }
 
         local_irq_restore(flags);
@@ -228,6 +265,37 @@ __cmpxchg_u32(volatile unsigned int *p, unsigned int old, unsigned int new)
         return retval;
 }
 
+static inline unsigned long
+__cmpxchg_local_u32(volatile unsigned int *p, unsigned int old,
+                        unsigned int new)
+{
+        unsigned long flags;
+        unsigned int retval;
+
+        local_irq_save(flags);
+        __asm__ __volatile__ (
+                        DCACHE_CLEAR("%0", "r4", "%1")
+                        "ld %0, @%1;            \n"
+                "       bne     %0, %2, 1f;     \n"
+                        "st %3, @%1;            \n"
+                "       bra     2f;             \n"
+                "       .fillinsn               \n"
+                "1:"
+                        "st %0, @%1;            \n"
+                "       .fillinsn               \n"
+                "2:"
+                        : "=&r" (retval)
+                        : "r" (p), "r" (old), "r" (new)
+                        : "cbit", "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+                        , "r4"
+#endif  /* CONFIG_CHIP_M32700_TS1 */
+                );
+        local_irq_restore(flags);
+
+        return retval;
+}
+
 /* This function doesn't exist, so you'll get a linker error
    if something tries to do an invalid cmpxchg().  */
 extern void __cmpxchg_called_with_bad_pointer(void);
@@ -247,13 +315,34 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
         return old;
 }
 
-#define cmpxchg(ptr,o,n)                                                 \
-  ({                                                                     \
-     __typeof__(*(ptr)) _o_ = (o);                                       \
-     __typeof__(*(ptr)) _n_ = (n);                                       \
-     (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,           \
-                                    (unsigned long)_n_, sizeof(*(ptr))); \
-  })
+#define cmpxchg(ptr, o, n)                                               \
+        ((__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)(o),       \
+                        (unsigned long)(n), sizeof(*(ptr))))
+
+#include <asm-generic/cmpxchg-local.h>
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+                                      unsigned long old,
+                                      unsigned long new, int size)
+{
+        switch (size) {
+        case 4:
+                return __cmpxchg_local_u32(ptr, old, new);
+        default:
+                return __cmpxchg_local_generic(ptr, old, new, size);
+        }
+
+        return old;
+}
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr, o, n)                                            \
+        ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o),     \
+                        (unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
 
 #endif  /* __KERNEL__ */
 
diff --git a/include/asm-m32r/unistd.h b/include/asm-m32r/unistd.h
index f467eac9ba70..cf701c933249 100644
--- a/include/asm-m32r/unistd.h
+++ b/include/asm-m32r/unistd.h
@@ -327,7 +327,7 @@
 #define __NR_epoll_pwait        319
 #define __NR_utimensat          320
 #define __NR_signalfd           321
-#define __NR_timerfd            322
+/* #define __NR_timerfd         322 removed */
 #define __NR_eventfd            323
 #define __NR_fallocate          324
 
diff --git a/include/asm-m32r/user.h b/include/asm-m32r/user.h
index 035258d713d0..03b3c11c2aff 100644
--- a/include/asm-m32r/user.h
+++ b/include/asm-m32r/user.h
@@ -38,7 +38,7 @@ struct user {
         unsigned long   start_data;             /* data starting address */
         unsigned long   start_stack;            /* stack starting address */
         long int        signal;                 /* signal causing core dump */
-        struct regs *   u_ar0;                  /* help gdb find registers */
+        unsigned long   u_ar0;                  /* help gdb find registers */
         unsigned long   magic;                  /* identifies a core file */
         char            u_comm[32];             /* user command name */
 };