#include <linux/signal.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
+#include <linux/perf_event.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/kdebug.h>
         if (in_atomic() || !mm)
                 goto no_context;
 
+       perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+
        down_read(&mm->mmap_sem);
 
        /*
                        goto do_sigbus;
                BUG();
        }
-       if (fault & VM_FAULT_MAJOR)
+       if (fault & VM_FAULT_MAJOR) {
                current->maj_flt++;
-       else
+               perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                             regs, address);
+       } else {
                current->min_flt++;
+               perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                             regs, address);
+       }
        up_read(&mm->mmap_sem);
        return;
 
 
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/perf_event.h>
 #include <linux/interrupt.h>
 #include <linux/kprobes.h>
 #include <linux/kdebug.h>
        if (in_atomic() || !mm)
                goto intr_or_no_mm;
 
+       perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
+
        if (!down_read_trylock(&mm->mmap_sem)) {
                if ((regs->tstate & TSTATE_PRIV) &&
                    !search_exception_tables(regs->tpc)) {
                        goto do_sigbus;
                BUG();
        }
-       if (fault & VM_FAULT_MAJOR)
+       if (fault & VM_FAULT_MAJOR) {
                current->maj_flt++;
-       else
+               perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
+                             regs, address);
+       } else {
                current->min_flt++;
-
+               perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
+                             regs, address);
+       }
        up_read(&mm->mmap_sem);
 
        mm_rss = get_mm_rss(mm);