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Commit 5d2aa83e authored by Harsh Agarwal's avatar Harsh Agarwal Committed by Mayank Rana
Browse files

usb: core: Add marker for device enumeration 



Add markers when a new device is configured or an existing device
is reset. This is required to capture USB host-mode boot KPIs on
some platforms.

Change-Id: I72136942359076e34c1e6ae67cbe099216630400
Signed-off-by: default avatarHarsh Agarwal <harshq@codeaurora.org>
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent c5cf46ec

drivers/usb/core/hub.c

+16 −0
Original line number Diff line number Diff line
@@ -30,6 +30,9 @@ 
#include <linux/random.h>

#include <linux/pm_qos.h>

#include <linux/kobject.h>

#ifdef CONFIG_QGKI_MSM_BOOT_TIME_MARKER

#include <soc/qcom/boot_stats.h>

#endif



#include <linux/uaccess.h>

#include <asm/byteorder.h>
@@ -5712,6 +5715,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) 
	struct usb_hcd			*hcd = bus_to_hcd(udev->bus);

	struct usb_device_descriptor	descriptor = udev->descriptor;

	struct usb_host_bos		*bos;

	char				buf[50];

	int				i, j, ret = 0;

	int				port1 = udev->portnum;
@@ -5792,6 +5796,18 @@ static int usb_reset_and_verify_device(struct usb_device *udev) 
	mutex_unlock(hcd->bandwidth_mutex);

	usb_set_device_state(udev, USB_STATE_CONFIGURED);



	/* Skip this marker for root-hubs */

	if (udev->parent != NULL) {

		scnprintf(buf, sizeof(buf),

				"USB device reset with VID=%04x, PID=%04x ",

				le16_to_cpu(udev->descriptor.idVendor),

				le16_to_cpu(udev->descriptor.idProduct));

		dev_info(&udev->dev, "%s\n", buf);

#ifdef CONFIG_QGKI_MSM_BOOT_TIME_MARKER

		place_marker(buf);

#endif

	}



	/* Put interfaces back into the same altsettings as before.

	 * Don't bother to send the Set-Interface request for interfaces

	 * that were already in altsetting 0; besides being unnecessary,

drivers/usb/core/message.c

+16 −0
Original line number Diff line number Diff line
@@ -20,6 +20,9 @@ 
#include <linux/usb/hcd.h>	/* for usbcore internals */

#include <linux/usb/of.h>

#include <asm/byteorder.h>

#ifdef CONFIG_QGKI_MSM_BOOT_TIME_MARKER

#include <soc/qcom/boot_stats.h>

#endif



#include "usb.h"
@@ -1808,6 +1811,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration) 
	struct usb_host_config *cp = NULL;

	struct usb_interface **new_interfaces = NULL;

	struct usb_hcd *hcd = bus_to_hcd(dev->bus);

	char buf[50];

	int n, nintf;



	if (dev->authorized == 0 || configuration == -1)
@@ -1990,6 +1994,18 @@ int usb_set_configuration(struct usb_device *dev, int configuration) 
	}

	usb_set_device_state(dev, USB_STATE_CONFIGURED);



	/* Skip this marker for root-hubs */

	if (dev->parent != NULL) {

		scnprintf(buf, sizeof(buf),

				"New USB device found, VID=%04x, PID=%04x ",

				le16_to_cpu(dev->descriptor.idVendor),

				le16_to_cpu(dev->descriptor.idProduct));

		dev_info(&dev->dev, "%s\n", buf);

#ifdef CONFIG_QGKI_MSM_BOOT_TIME_MARKER

		place_marker(buf);

#endif

	}



	if (cp->string == NULL &&

			!(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))

		cp->string = usb_cache_string(dev, cp->desc.iConfiguration);