[PATCH] OProfile update

Change the lost_mmap_sem stat to lost_no_mm, and account it.

drivers/oprofile/buffer_sync.c

@@ -298,6 +298,8 @@ static void add_sample(struct mm_struct * mm, struct op_sample * s, int in_kerne
 		add_sample_entry(s->eip, s->event);
 	} else if (mm) {
 		add_us_sample(mm, s);
+	} else {
+		atomic_inc(&oprofile_stats.sample_lost_no_mm);
 	}
 }
  

drivers/oprofile/oprofile_stats.c

@@ -31,7 +31,7 @@ void oprofile_reset_stats(void)
 		cpu_buf->sample_lost_task_exit = 0;
 	}
  
-	atomic_set(&oprofile_stats.sample_lost_mmap_sem, 0);
+	atomic_set(&oprofile_stats.sample_lost_no_mm, 0);
 	atomic_set(&oprofile_stats.event_lost_overflow, 0);
 }
 
@@ -68,8 +68,8 @@ void oprofile_create_stats_files(struct super_block * sb, struct dentry * root)
 			&cpu_buf->sample_lost_task_exit);
 	}
  
-	oprofilefs_create_ro_atomic(sb, dir, "sample_lost_mmap_sem",
-		&oprofile_stats.sample_lost_mmap_sem);
+	oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mm",
+		&oprofile_stats.sample_lost_no_mm);
 	oprofilefs_create_ro_atomic(sb, dir, "event_lost_overflow",
 		&oprofile_stats.event_lost_overflow);
 }

drivers/oprofile/oprofile_stats.h

@@ -13,7 +13,7 @@
 #include <asm/atomic.h>
  
 struct oprofile_stat_struct {
-	atomic_t sample_lost_mmap_sem;
+	atomic_t sample_lost_no_mm;
 	atomic_t event_lost_overflow;
 };