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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-08-01 22:42:05 +0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-08-01 22:42:05 +0400
commitc6557e7f2b6ae76a44653d38f835174074c42e05 (patch)
treeda619a76b309cb1cd259d082af768a83cfcd6d52 /include/asm-s390/tlbflush.h
parentab4227cb2d936886069ef1056c02500d05beb15d (diff)
downloadlinux-c6557e7f2b6ae76a44653d38f835174074c42e05.tar.xz
[S390] move include/asm-s390 to arch/s390/include/asm
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/tlbflush.h')
-rw-r--r--include/asm-s390/tlbflush.h140
1 files changed, 0 insertions, 140 deletions
diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h
deleted file mode 100644
index d60394b9745e..000000000000
--- a/include/asm-s390/tlbflush.h
+++ /dev/null
@@ -1,140 +0,0 @@
-#ifndef _S390_TLBFLUSH_H
-#define _S390_TLBFLUSH_H
-
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <asm/processor.h>
-#include <asm/pgalloc.h>
-
-/*
- * Flush all tlb entries on the local cpu.
- */
-static inline void __tlb_flush_local(void)
-{
- asm volatile("ptlb" : : : "memory");
-}
-
-#ifdef CONFIG_SMP
-/*
- * Flush all tlb entries on all cpus.
- */
-void smp_ptlb_all(void);
-
-static inline void __tlb_flush_global(void)
-{
- register unsigned long reg2 asm("2");
- register unsigned long reg3 asm("3");
- register unsigned long reg4 asm("4");
- long dummy;
-
-#ifndef __s390x__
- if (!MACHINE_HAS_CSP) {
- smp_ptlb_all();
- return;
- }
-#endif /* __s390x__ */
-
- dummy = 0;
- reg2 = reg3 = 0;
- reg4 = ((unsigned long) &dummy) + 1;
- asm volatile(
- " csp %0,%2"
- : : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" );
-}
-
-static inline void __tlb_flush_full(struct mm_struct *mm)
-{
- cpumask_t local_cpumask;
-
- preempt_disable();
- /*
- * If the process only ran on the local cpu, do a local flush.
- */
- local_cpumask = cpumask_of_cpu(smp_processor_id());
- if (cpus_equal(mm->cpu_vm_mask, local_cpumask))
- __tlb_flush_local();
- else
- __tlb_flush_global();
- preempt_enable();
-}
-#else
-#define __tlb_flush_full(mm) __tlb_flush_local()
-#endif
-
-/*
- * Flush all tlb entries of a page table on all cpus.
- */
-static inline void __tlb_flush_idte(unsigned long asce)
-{
- asm volatile(
- " .insn rrf,0xb98e0000,0,%0,%1,0"
- : : "a" (2048), "a" (asce) : "cc" );
-}
-
-static inline void __tlb_flush_mm(struct mm_struct * mm)
-{
- if (unlikely(cpus_empty(mm->cpu_vm_mask)))
- return;
- /*
- * If the machine has IDTE we prefer to do a per mm flush
- * on all cpus instead of doing a local flush if the mm
- * only ran on the local cpu.
- */
- if (MACHINE_HAS_IDTE) {
- if (mm->context.noexec)
- __tlb_flush_idte((unsigned long)
- get_shadow_table(mm->pgd) |
- mm->context.asce_bits);
- __tlb_flush_idte((unsigned long) mm->pgd |
- mm->context.asce_bits);
- return;
- }
- __tlb_flush_full(mm);
-}
-
-static inline void __tlb_flush_mm_cond(struct mm_struct * mm)
-{
- if (atomic_read(&mm->mm_users) <= 1 && mm == current->active_mm)
- __tlb_flush_mm(mm);
-}
-
-/*
- * TLB flushing:
- * flush_tlb() - flushes the current mm struct TLBs
- * flush_tlb_all() - flushes all processes TLBs
- * flush_tlb_mm(mm) - flushes the specified mm context TLB's
- * flush_tlb_page(vma, vmaddr) - flushes one page
- * flush_tlb_range(vma, start, end) - flushes a range of pages
- * flush_tlb_kernel_range(start, end) - flushes a range of kernel pages
- */
-
-/*
- * flush_tlb_mm goes together with ptep_set_wrprotect for the
- * copy_page_range operation and flush_tlb_range is related to
- * ptep_get_and_clear for change_protection. ptep_set_wrprotect and
- * ptep_get_and_clear do not flush the TLBs directly if the mm has
- * only one user. At the end of the update the flush_tlb_mm and
- * flush_tlb_range functions need to do the flush.
- */
-#define flush_tlb() do { } while (0)
-#define flush_tlb_all() do { } while (0)
-#define flush_tlb_page(vma, addr) do { } while (0)
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- __tlb_flush_mm_cond(mm);
-}
-
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- __tlb_flush_mm_cond(vma->vm_mm);
-}
-
-static inline void flush_tlb_kernel_range(unsigned long start,
- unsigned long end)
-{
- __tlb_flush_mm(&init_mm);
-}
-
-#endif /* _S390_TLBFLUSH_H */