5 files changed, 45 insertions, 37 deletions

diff --git a/include/asm-arm26/atomic.h b/include/asm-arm26/atomic.h
index 4a88235c0e76..a47cadc59686 100644
--- a/include/asm-arm26/atomic.h
+++ b/include/asm-arm26/atomic.h
@@ -62,6 +62,35 @@ static inline int atomic_sub_return(int i, atomic_t *v)
         return val;
 }
 
+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+        int ret;
+        unsigned long flags;
+
+        local_irq_save(flags);
+        ret = v->counter;
+        if (likely(ret == old))
+                v->counter = new;
+        local_irq_restore(flags);
+
+        return ret;
+}
+
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+        int ret;
+        unsigned long flags;
+
+        local_irq_save(flags);
+        ret = v->counter;
+        if (ret != u)
+                v->counter += a;
+        local_irq_restore(flags);
+
+        return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 {
         unsigned long flags;
diff --git a/include/asm-arm26/pgtable.h b/include/asm-arm26/pgtable.h
index f602cf572411..a590250277f8 100644
--- a/include/asm-arm26/pgtable.h
+++ b/include/asm-arm26/pgtable.h
@@ -98,8 +98,6 @@ extern struct page *empty_zero_page;
 #define pfn_pte(pfn,prot)       (__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
 #define pages_to_mb(x)          ((x) >> (20 - PAGE_SHIFT))
 #define mk_pte(page,prot)       pfn_pte(page_to_pfn(page),prot)
-#define page_pte_prot(page,prot)        mk_pte(page, prot)
-#define page_pte(page)          mk_pte(page, __pgprot(0))
 
 /*
  * Terminology: PGD = Page Directory, PMD = Page Middle Directory,
diff --git a/include/asm-arm26/semaphore.h b/include/asm-arm26/semaphore.h
index c1b6a1edad92..ccf15e704109 100644
--- a/include/asm-arm26/semaphore.h
+++ b/include/asm-arm26/semaphore.h
@@ -25,9 +25,6 @@ struct semaphore {
         .wait           = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait),   \
 }
 
-#define __MUTEX_INITIALIZER(name) \
-        __SEMAPHORE_INIT(name,1)
-
 #define __DECLARE_SEMAPHORE_GENERIC(name,count) \
         struct semaphore name = __SEMAPHORE_INIT(name,count)
 
diff --git a/include/asm-arm26/tlb.h b/include/asm-arm26/tlb.h
index 1316352a58f3..08ddd85b8d35 100644
--- a/include/asm-arm26/tlb.h
+++ b/include/asm-arm26/tlb.h
@@ -10,24 +10,20 @@
  */
 struct mmu_gather {
         struct mm_struct        *mm;
-        unsigned int            freed;
-        unsigned int            fullmm;
-
-        unsigned int            flushes;
-        unsigned int            avoided_flushes;
+        unsigned int            need_flush;
+        unsigned int            fullmm;
 };
 
-extern struct mmu_gather mmu_gathers[NR_CPUS];
+DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
 
 static inline struct mmu_gather *
 tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
 {
-        int cpu = smp_processor_id();
-        struct mmu_gather *tlb = &mmu_gathers[cpu];
+        struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
 
         tlb->mm = mm;
-        tlb->freed = 0;
-        tlb->fullmm = full_mm_flush;
+        tlb->need_flush = 0;
+        tlb->fullmm = full_mm_flush;
 
         return tlb;
 }
@@ -35,30 +31,13 @@ tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
 static inline void
 tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
 {
-        struct mm_struct *mm = tlb->mm;
-        unsigned long freed = tlb->freed;
-        int rss = get_mm_counter(mm, rss);
-
-        if (rss < freed)
-                freed = rss;
-        add_mm_counter(mm, rss, -freed);
-
-        if (freed) {
-                flush_tlb_mm(mm);
-                tlb->flushes++;
-        } else {
-                tlb->avoided_flushes++;
-        }
+        if (tlb->need_flush)
+                flush_tlb_mm(tlb->mm);
 
         /* keep the page table cache within bounds */
         check_pgt_cache();
-}
-
 
-static inline unsigned int
-tlb_is_full_mm(struct mmu_gather *tlb)
-{
-     return tlb->fullmm;
+        put_cpu_var(mmu_gathers);
 }
 
 #define tlb_remove_tlb_entry(tlb,ptep,address)  do { } while (0)
@@ -71,7 +50,13 @@ tlb_is_full_mm(struct mmu_gather *tlb)
         } while (0)
 #define tlb_end_vma(tlb,vma)                    do { } while (0)
 
-#define tlb_remove_page(tlb,page)       free_page_and_swap_cache(page)
+static inline void
+tlb_remove_page(struct mmu_gather *tlb, struct page *page)
+{
+        tlb->need_flush = 1;
+        free_page_and_swap_cache(page);
+}
+
 #define pte_free_tlb(tlb,ptep)          pte_free(ptep)
 #define pmd_free_tlb(tlb,pmdp)          pmd_free(pmdp)
 
diff --git a/include/asm-arm26/unistd.h b/include/asm-arm26/unistd.h
index dfa0b0c30aa3..be4c2fb9c049 100644
--- a/include/asm-arm26/unistd.h
+++ b/include/asm-arm26/unistd.h
@@ -480,7 +480,6 @@ asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
 asmlinkage int sys_fork(struct pt_regs *regs);
 asmlinkage int sys_vfork(struct pt_regs *regs);
 asmlinkage int sys_pipe(unsigned long *fildes);
-asmlinkage int sys_ptrace(long request, long pid, long addr, long data);
 struct sigaction;
 asmlinkage long sys_rt_sigaction(int sig,
                                 const struct sigaction __user *act,