[PATCH] per-task-delay-accounting: /proc export of aggregated block I/O delays

[powerpc.git] / kernel / delayacct.c

diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index 1be274a..f05392d 100644 (file)
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -164,3 +164,15 @@ done:
        spin_unlock(&tsk->delays_lock);
        return 0;
 }
+
+__u64 __delayacct_blkio_ticks(struct task_struct *tsk)
+{
+       __u64 ret;
+
+       spin_lock(&tsk->delays->lock);
+       ret = nsec_to_clock_t(tsk->delays->blkio_delay +
+                               tsk->delays->swapin_delay);
+       spin_unlock(&tsk->delays->lock);
+       return ret;
+}
+