1 files changed, 27 insertions, 37 deletions

diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c
index fcbb6e135cef..7f5810f5dfdc 100644
--- a/arch/sh/mm/tlbflush_64.c
+++ b/arch/sh/mm/tlbflush_64.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2000, 2001  Paolo Alberelli
  * Copyright (C) 2003  Richard Curnow (/proc/tlb, bug fixes)
- * Copyright (C) 2003  Paul Mundt
+ * Copyright (C) 2003 - 2009 Paul Mundt
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -20,6 +20,7 @@
 #include <linux/mman.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
+#include <linux/perf_event.h>
 #include <linux/interrupt.h>
 #include <asm/system.h>
 #include <asm/io.h>
@@ -35,7 +36,7 @@ extern void die(const char *,struct pt_regs *,long);
 
 static inline void print_prots(pgprot_t prot)
 {
-        printk("prot is 0x%08lx\n",pgprot_val(prot));
+        printk("prot is 0x%016llx\n",pgprot_val(prot));
 
         printk("%s %s %s %s %s\n",PPROT(_PAGE_SHARED),PPROT(_PAGE_READ),
                PPROT(_PAGE_EXECUTE),PPROT(_PAGE_WRITE),PPROT(_PAGE_USER));
@@ -115,6 +116,8 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
         /* Not an IO address, so reenable interrupts */
         local_irq_enable();
 
+        perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+
         /*
          * If we're in an interrupt or have no user
          * context, we must not take the fault..
@@ -186,7 +189,6 @@ good_area:
          * make sure we exit gracefully rather than endlessly redo
          * the fault.
          */
-survive:
         fault = handle_mm_fault(mm, vma, address, writeaccess ? FAULT_FLAG_WRITE : 0);
         if (unlikely(fault & VM_FAULT_ERROR)) {
                 if (fault & VM_FAULT_OOM)
@@ -195,10 +197,16 @@ survive:
                         goto do_sigbus;
                 BUG();
         }
-        if (fault & VM_FAULT_MAJOR)
+
+        if (fault & VM_FAULT_MAJOR) {
                 tsk->maj_flt++;
-        else
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                                     regs, address);
+        } else {
                 tsk->min_flt++;
+                perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                                     regs, address);
+        }
 
         /* If we get here, the page fault has been handled.  Do the TLB refill
            now from the newly-setup PTE, to avoid having to fault again right
@@ -285,22 +293,11 @@ no_context:
  * us unable to handle the page fault gracefully.
  */
 out_of_memory:
-        if (is_global_init(current)) {
-                panic("INIT out of memory\n");
-                yield();
-                goto survive;
-        }
-        printk("fault:Out of memory\n");
         up_read(&mm->mmap_sem);
-        if (is_global_init(current)) {
-                yield();
-                down_read(&mm->mmap_sem);
-                goto survive;
-        }
-        printk("VM: killing process %s\n", tsk->comm);
-        if (user_mode(regs))
-                do_group_exit(SIGKILL);
-        goto no_context;
+        if (!user_mode(regs))
+                goto no_context;
+        pagefault_out_of_memory();
+        return;
 
 do_sigbus:
         printk("fault:Do sigbus\n");
@@ -320,22 +317,6 @@ do_sigbus:
                 goto no_context;
 }
 
-void update_mmu_cache(struct vm_area_struct * vma,
-                        unsigned long address, pte_t pte)
-{
-        /*
-         * This appears to get called once for every pte entry that gets
-         * established => I don't think it's efficient to try refilling the
-         * TLBs with the pages - some may not get accessed even.  Also, for
-         * executable pages, it is impossible to determine reliably here which
-         * TLB they should be mapped into (or both even).
-         *
-         * So, just do nothing here and handle faults on demand.  In the
-         * TLBMISS handling case, the refill is now done anyway after the pte
-         * has been fixed up, so that deals with most useful cases.
-         */
-}
-
 void local_flush_tlb_one(unsigned long asid, unsigned long page)
 {
         unsigned long long match, pteh=0, lpage;
@@ -344,7 +325,7 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
         /*
          * Sign-extend based on neff.
          */
-        lpage = (page & NEFF_SIGN) ? (page | NEFF_MASK) : page;
+        lpage = neff_sign_extend(page);
         match = (asid << PTEH_ASID_SHIFT) | PTEH_VALID;
         match |= lpage;
 
@@ -473,3 +454,12 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
         /* FIXME: Optimize this later.. */
         flush_tlb_all();
 }
+
+void __flush_tlb_global(void)
+{
+        flush_tlb_all();
+}
+
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+}