[src/trunk]: src/sys/dev/usb usbdi(9): dtrace probes for USB control requests.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8956d5c3eabf
branches:  trunk
changeset: 362572:8956d5c3eabf
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Thu Mar 03 06:13:23 2022 +0000

description:
usbdi(9): dtrace probes for USB control requests.

diffstat:

 sys/dev/usb/usbdi.c |  31 ++++++++++++++++++++++++++++---
 1 files changed, 28 insertions(+), 3 deletions(-)

diffs (68 lines):

diff -r 01a90ea7a518 -r 8956d5c3eabf sys/dev/usb/usbdi.c
--- a/sys/dev/usb/usbdi.c       Thu Mar 03 06:12:49 2022 +0000
+++ b/sys/dev/usb/usbdi.c       Thu Mar 03 06:13:23 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usbdi.c,v 1.232 2022/03/03 06:12:49 riastradh Exp $    */
+/*     $NetBSD: usbdi.c,v 1.233 2022/03/03 06:13:23 riastradh Exp $    */
 
 /*
  * Copyright (c) 1998, 2012, 2015 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.232 2022/03/03 06:12:49 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.233 2022/03/03 06:13:23 riastradh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -113,6 +113,22 @@
     "usbd_status"/*status*/);
 SDT_PROBE_DEFINE1(usb, device, xfer, destroy,  "struct usbd_xfer *"/*xfer*/);
 
+SDT_PROBE_DEFINE5(usb, device, request, start,
+    "struct usbd_device *"/*dev*/,
+    "usb_device_request_t *"/*req*/,
+    "size_t"/*len*/,
+    "int"/*flags*/,
+    "uint32_t"/*timeout*/);
+
+SDT_PROBE_DEFINE7(usb, device, request, done,
+    "struct usbd_device *"/*dev*/,
+    "usb_device_request_t *"/*req*/,
+    "size_t"/*actlen*/,
+    "int"/*flags*/,
+    "uint32_t"/*timeout*/,
+    "void *"/*data*/,
+    "usbd_status"/*status*/);
+
 Static void usbd_ar_pipe(struct usbd_pipe *);
 Static void usbd_start_next(struct usbd_pipe *);
 Static usbd_status usbd_open_pipe_ival
@@ -1236,9 +1252,15 @@
 
        ASSERT_SLEEPABLE();
 
+       SDT_PROBE5(usb, device, request, start,
+           dev, req, len, flags, timeout);
+
        int error = usbd_create_xfer(dev->ud_pipe0, len, 0, 0, &xfer);
-       if (error)
+       if (error) {
+               SDT_PROBE7(usb, device, request, done,
+                   dev, req, /*actlen*/0, flags, timeout, data, USBD_NOMEM);
                return USBD_NOMEM;
+       }
 
        usbd_setup_default_xfer(xfer, dev, 0, timeout, req, data,
            UGETW(req->wLength), flags, NULL);
@@ -1263,6 +1285,9 @@
 
        usbd_destroy_xfer(xfer);
 
+       SDT_PROBE7(usb, device, request, done,
+           dev, req, xfer->ux_actlen, flags, timeout, data, err);
+
        if (err) {
                USBHIST_LOG(usbdebug, "returning err = %jd", err, 0, 0, 0);
        }