1 files changed, 0 insertions, 138 deletions

diff --git a/include/asm-mn10300/mmu_context.h b/include/asm-mn10300/mmu_context.h
deleted file mode 100644
index a9e2e34f69b0..000000000000
--- a/include/asm-mn10300/mmu_context.h
+++ /dev/null
@@ -1,138 +0,0 @@
-/* MN10300 MMU context management
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Modified by David Howells (dhowells@redhat.com)
- * - Derived from include/asm-m32r/mmu_context.h
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- *
- *
- * This implements an algorithm to provide TLB PID mappings to provide
- * selective access to the TLB for processes, thus reducing the number of TLB
- * flushes required.
- *
- * Note, however, that the M32R algorithm is technically broken as it does not
- * handle version wrap-around, and could, theoretically, have a problem with a
- * very long lived program that sleeps long enough for the version number to
- * wrap all the way around so that its TLB mappings appear valid once again.
- */
-#ifndef _ASM_MMU_CONTEXT_H
-#define _ASM_MMU_CONTEXT_H
-
-#include <asm/atomic.h>
-#include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-#include <asm-generic/mm_hooks.h>
-
-#define MMU_CONTEXT_TLBPID_MASK         0x000000ffUL
-#define MMU_CONTEXT_VERSION_MASK        0xffffff00UL
-#define MMU_CONTEXT_FIRST_VERSION       0x00000100UL
-#define MMU_NO_CONTEXT                  0x00000000UL
-
-extern unsigned long mmu_context_cache[NR_CPUS];
-#define mm_context(mm)  (mm->context.tlbpid[smp_processor_id()])
-
-#define enter_lazy_tlb(mm, tsk) do {} while (0)
-
-#ifdef CONFIG_SMP
-#define cpu_ran_vm(cpu, task) \
-        cpu_set((cpu), (task)->cpu_vm_mask)
-#define cpu_maybe_ran_vm(cpu, task) \
-        cpu_test_and_set((cpu), (task)->cpu_vm_mask)
-#else
-#define cpu_ran_vm(cpu, task)           do {} while (0)
-#define cpu_maybe_ran_vm(cpu, task)     true
-#endif /* CONFIG_SMP */
-
-/*
- * allocate an MMU context
- */
-static inline unsigned long allocate_mmu_context(struct mm_struct *mm)
-{
-        unsigned long *pmc = &mmu_context_cache[smp_processor_id()];
-        unsigned long mc = ++(*pmc);
-
-        if (!(mc & MMU_CONTEXT_TLBPID_MASK)) {
-                /* we exhausted the TLB PIDs of this version on this CPU, so we
-                 * flush this CPU's TLB in its entirety and start new cycle */
-                flush_tlb_all();
-
-                /* fix the TLB version if needed (we avoid version #0 so as to
-                 * distingush MMU_NO_CONTEXT) */
-                if (!mc)
-                        *pmc = mc = MMU_CONTEXT_FIRST_VERSION;
-        }
-        mm_context(mm) = mc;
-        return mc;
-}
-
-/*
- * get an MMU context if one is needed
- */
-static inline unsigned long get_mmu_context(struct mm_struct *mm)
-{
-        unsigned long mc = MMU_NO_CONTEXT, cache;
-
-        if (mm) {
-                cache = mmu_context_cache[smp_processor_id()];
-                mc = mm_context(mm);
-
-                /* if we have an old version of the context, replace it */
-                if ((mc ^ cache) & MMU_CONTEXT_VERSION_MASK)
-                        mc = allocate_mmu_context(mm);
-        }
-        return mc;
-}
-
-/*
- * initialise the context related info for a new mm_struct instance
- */
-static inline int init_new_context(struct task_struct *tsk,
-                                   struct mm_struct *mm)
-{
-        int num_cpus = NR_CPUS, i;
-
-        for (i = 0; i < num_cpus; i++)
-                mm->context.tlbpid[i] = MMU_NO_CONTEXT;
-        return 0;
-}
-
-/*
- * destroy context related info for an mm_struct that is about to be put to
- * rest
- */
-#define destroy_context(mm)     do { } while (0)
-
-/*
- * after we have set current->mm to a new value, this activates the context for
- * the new mm so we see the new mappings.
- */
-static inline void activate_context(struct mm_struct *mm, int cpu)
-{
-        PIDR = get_mmu_context(mm) & MMU_CONTEXT_TLBPID_MASK;
-}
-
-/*
- * change between virtual memory sets
- */
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-                             struct task_struct *tsk)
-{
-        int cpu = smp_processor_id();
-
-        if (prev != next) {
-                cpu_ran_vm(cpu, next);
-                activate_context(next, cpu);
-                PTBR = (unsigned long) next->pgd;
-        } else if (!cpu_maybe_ran_vm(cpu, next)) {
-                activate_context(next, cpu);
-        }
-}
-
-#define deactivate_mm(tsk, mm)  do {} while (0)
-#define activate_mm(prev, next) switch_mm((prev), (next), NULL)
-
-#endif /* _ASM_MMU_CONTEXT_H */