perf_counter: allow for data addresses to be recorded

[linux-2.6-block.git] / arch / powerpc / mm / fault.c

diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 76993941cac95a12f7c95972eb55f9e0b00fe769..ac0e112031b29f4a6b96d6b6a9b8b61cdfdc5d34 100644 (file)
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -29,6 +29,7 @@
 #include <linux/module.h>
 #include <linux/kprobes.h>
 #include <linux/kdebug.h>
+#include <linux/perf_counter.h>
 
 #include <asm/firmware.h>
 #include <asm/page.h>
@@ -170,6 +171,8 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
                die("Weird page fault", regs, SIGSEGV);
        }
 
+       perf_swcounter_event(PERF_COUNT_PAGE_FAULTS, 1, 0, regs, address);
+
        /* When running in the kernel we expect faults to occur only to
         * addresses in user space.  All other faults represent errors in the
         * kernel and should generate an OOPS.  Unfortunately, in the case of an
@@ -309,6 +312,8 @@ good_area:
        }
        if (ret & VM_FAULT_MAJOR) {
                current->maj_flt++;
+               perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MAJ, 1, 0,
+                                    regs, address);
 #ifdef CONFIG_PPC_SMLPAR
                if (firmware_has_feature(FW_FEATURE_CMO)) {
                        preempt_disable();
@@ -316,8 +321,11 @@ good_area:
                        preempt_enable();
                }
 #endif
-       } else
+       } else {
                current->min_flt++;
+               perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MIN, 1, 0,
+                                    regs, address);
+       }
        up_read(&mm->mmap_sem);
        return 0;