Revision b837913fc2d9061bf9b8c0dd6bf2d24e2f98b84a authored by jacek.tomaka@poczta.fm on 23 April 2018, 16:14:25 UTC, committed by Thomas Gleixner on 26 April 2018, 19:42:44 UTC
Make kernel print the correct number of TLB entries on Intel Xeon Phi 7210 (and others) Before: [ 0.320005] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 After: [ 0.320005] Last level dTLB entries: 4KB 256, 2MB 128, 4MB 128, 1GB 16 The entries do exist in the official Intel SMD but the type column there is incorrect (states "Cache" where it should read "TLB"), but the entries for the values 0x6B, 0x6C and 0x6D are correctly described as 'Data TLB'. Signed-off-by: Jacek Tomaka <jacek.tomaka@poczta.fm> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20180423161425.24366-1-jacekt@dugeo.com
1 parent da6fa7e
dev-sysfs.c
// SPDX-License-Identifier: GPL-2.0
/*
* WUSB devices
* sysfs bindings
*
* Copyright (C) 2007 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
*
* Get them out of the way...
*/
#include <linux/jiffies.h>
#include <linux/ctype.h>
#include <linux/workqueue.h>
#include "wusbhc.h"
static ssize_t wusb_disconnect_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct usb_device *usb_dev;
struct wusbhc *wusbhc;
unsigned command;
u8 port_idx;
if (sscanf(buf, "%u", &command) != 1)
return -EINVAL;
if (command == 0)
return size;
usb_dev = to_usb_device(dev);
wusbhc = wusbhc_get_by_usb_dev(usb_dev);
if (wusbhc == NULL)
return -ENODEV;
mutex_lock(&wusbhc->mutex);
port_idx = wusb_port_no_to_idx(usb_dev->portnum);
__wusbhc_dev_disable(wusbhc, port_idx);
mutex_unlock(&wusbhc->mutex);
wusbhc_put(wusbhc);
return size;
}
static DEVICE_ATTR_WO(wusb_disconnect);
static ssize_t wusb_cdid_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
ssize_t result;
struct wusb_dev *wusb_dev;
wusb_dev = wusb_dev_get_by_usb_dev(to_usb_device(dev));
if (wusb_dev == NULL)
return -ENODEV;
result = ckhdid_printf(buf, PAGE_SIZE, &wusb_dev->cdid);
strcat(buf, "\n");
wusb_dev_put(wusb_dev);
return result + 1;
}
static DEVICE_ATTR_RO(wusb_cdid);
static ssize_t wusb_ck_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
int result;
struct usb_device *usb_dev;
struct wusbhc *wusbhc;
struct wusb_ckhdid ck;
result = sscanf(buf,
"%02hhx %02hhx %02hhx %02hhx "
"%02hhx %02hhx %02hhx %02hhx "
"%02hhx %02hhx %02hhx %02hhx "
"%02hhx %02hhx %02hhx %02hhx\n",
&ck.data[0] , &ck.data[1],
&ck.data[2] , &ck.data[3],
&ck.data[4] , &ck.data[5],
&ck.data[6] , &ck.data[7],
&ck.data[8] , &ck.data[9],
&ck.data[10], &ck.data[11],
&ck.data[12], &ck.data[13],
&ck.data[14], &ck.data[15]);
if (result != 16)
return -EINVAL;
usb_dev = to_usb_device(dev);
wusbhc = wusbhc_get_by_usb_dev(usb_dev);
if (wusbhc == NULL)
return -ENODEV;
result = wusb_dev_4way_handshake(wusbhc, usb_dev->wusb_dev, &ck);
memzero_explicit(&ck, sizeof(ck));
wusbhc_put(wusbhc);
return result < 0 ? result : size;
}
static DEVICE_ATTR_WO(wusb_ck);
static struct attribute *wusb_dev_attrs[] = {
&dev_attr_wusb_disconnect.attr,
&dev_attr_wusb_cdid.attr,
&dev_attr_wusb_ck.attr,
NULL,
};
static const struct attribute_group wusb_dev_attr_group = {
.name = NULL, /* we want them in the same directory */
.attrs = wusb_dev_attrs,
};
int wusb_dev_sysfs_add(struct wusbhc *wusbhc, struct usb_device *usb_dev,
struct wusb_dev *wusb_dev)
{
int result = sysfs_create_group(&usb_dev->dev.kobj,
&wusb_dev_attr_group);
struct device *dev = &usb_dev->dev;
if (result < 0)
dev_err(dev, "Cannot register WUSB-dev attributes: %d\n",
result);
return result;
}
void wusb_dev_sysfs_rm(struct wusb_dev *wusb_dev)
{
struct usb_device *usb_dev = wusb_dev->usb_dev;
if (usb_dev)
sysfs_remove_group(&usb_dev->dev.kobj, &wusb_dev_attr_group);
}
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