task IO accounting: provide distinct tgid/tid I/O statistics

[linux-2.6-omap-h63xx.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 8a4d4d12e29456701990729d6c7dc7859767b929..ad933bb29ec765888f4994db299ffc179d7bf4e8 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -120,6 +120,18 @@ static void __exit_signal(struct task_struct *tsk)
                sig->nivcsw += tsk->nivcsw;
                sig->inblock += task_io_get_inblock(tsk);
                sig->oublock += task_io_get_oublock(tsk);
+#ifdef CONFIG_TASK_XACCT
+               sig->rchar += tsk->rchar;
+               sig->wchar += tsk->wchar;
+               sig->syscr += tsk->syscr;
+               sig->syscw += tsk->syscw;
+#endif /* CONFIG_TASK_XACCT */
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+               sig->ioac.read_bytes += tsk->ioac.read_bytes;
+               sig->ioac.write_bytes += tsk->ioac.write_bytes;
+               sig->ioac.cancelled_write_bytes +=
+                                       tsk->ioac.cancelled_write_bytes;
+#endif /* CONFIG_TASK_IO_ACCOUNTING */
                sig->sum_sched_runtime += tsk->se.sum_exec_runtime;
                sig = NULL; /* Marker for below. */
        }
@@ -1366,6 +1378,21 @@ static int wait_task_zombie(struct task_struct *p, int options,
                psig->coublock +=
                        task_io_get_oublock(p) +
                        sig->oublock + sig->coublock;
+#ifdef CONFIG_TASK_XACCT
+               psig->rchar += p->rchar + sig->rchar;
+               psig->wchar += p->wchar + sig->wchar;
+               psig->syscr += p->syscr + sig->syscr;
+               psig->syscw += p->syscw + sig->syscw;
+#endif /* CONFIG_TASK_XACCT */
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+               psig->ioac.read_bytes +=
+                       p->ioac.read_bytes + sig->ioac.read_bytes;
+               psig->ioac.write_bytes +=
+                       p->ioac.write_bytes + sig->ioac.write_bytes;
+               psig->ioac.cancelled_write_bytes +=
+                               p->ioac.cancelled_write_bytes +
+                               sig->ioac.cancelled_write_bytes;
+#endif /* CONFIG_TASK_IO_ACCOUNTING */
                spin_unlock_irq(&p->parent->sighand->siglock);
        }