From 9d3a3c02a79326c28e44419299f9ac0d8ca96c16 Mon Sep 17 00:00:00 2001
From: Fabian Keil <fk@fabiankeil.de>
Date: Fri, 25 Aug 2017 10:30:37 +0200
Subject: [PATCH 189/325] Add share/dtrace/iosched-monitor (unfinished WIP) so
 it no longer gets listed as 'untracked'

Obtained from: ElectroBSD
---
 share/dtrace/iosched-monitor | 87 ++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100755 share/dtrace/iosched-monitor

diff --git a/share/dtrace/iosched-monitor b/share/dtrace/iosched-monitor
new file mode 100755
index 000000000000..dca024a49dc7
--- /dev/null
+++ b/share/dtrace/iosched-monitor
@@ -0,0 +1,87 @@
+#!/usr/sbin/dtrace -s
+
+/***************************************************************************
+ * iosched-monitor
+ *
+ * Monitors the behavior of the Dynamic I/O scheduler.
+ *
+ * Copyright (c) 2017 Fabian Keil <fk@fabiankeil.de>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ ***************************************************************************/
+
+#pragma D option quiet
+
+dtrace:::BEGIN
+{
+        bio_command[0x01] = "BIO_READ";
+        bio_command[0x02] = "BIO_WRITE";
+        bio_command[0x03] = "BIO_DELETE";
+        bio_command[0x04] = "BIO_GETATTR";
+        bio_command[0x05] = "BIO_FLUSH";
+        bio_command[0x06] = "BIO_CMD0";
+        bio_command[0x07] = "BIO_CMD1";
+        bio_command[0x08] = "BIO_CMD2";
+        bio_command[0x09] = "BIO_ZONE";
+}
+
+fbt::cam_iosched_bio_complete:entry
+{
+        this->isc = args[0];
+        this->bp = args[1];
+
+        this->bio_command = (bio_command[this->bp->bio_cmd] != NULL) ?
+            bio_command[this->bp->bio_cmd] : "Unregistered command";
+}
+
+fbt::cam_iosched_bio_complete:return
+/this->isc && this->bio_command == "BIO_DELETE"/
+{
+        printf("%Y: cam_iosched_bio_complete returned for BIO_DELETE. Pending trims: %d\n",
+            walltimestamp, this->isc->trim_stats.pending);
+}
+
+fbt::cam_iosched_trim_done:entry
+{
+        this->isc = args[0];
+        printf("%Y: cam_iosched_trim_done called. Pending trims: %d\n",
+            walltimestamp, this->isc->trim_stats.pending);
+}
+
+fbt::cam_iosched_put_back_trim:entry
+{
+        this->isc = args[0];
+}
+
+fbt::cam_iosched_put_back_trim:return
+/this->isc/
+{
+        printf("%Y: cam_iosched_put_back returned. Pending trims: %d\n",
+            walltimestamp, this->isc->trim_stats.pending);
+}
+
+fbt::cam_iosched_next_trim:entry
+{
+        this->isc = args[0];
+}
+
+fbt::cam_iosched_next_trim:return
+/this->isc/
+{
+        printf("%Y: cam_iosched_next_trim returned. Pending trims: %d\n",
+            walltimestamp, this->isc->trim_stats.pending);
+}
+
+END
+{
+}
-- 
2.32.0