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path: root/drivers/pci/pci-sysfs.c
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Diffstat (limited to 'drivers/pci/pci-sysfs.c')
-rw-r--r--drivers/pci/pci-sysfs.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index f8deb3e380a2..7bcf12adced7 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -108,6 +108,40 @@ static ssize_t local_cpulist_show(struct device *dev,
return len;
}
+/*
+ * PCI Bus Class Devices
+ */
+static ssize_t pci_bus_show_cpuaffinity(struct device *dev,
+ int type,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ const struct cpumask *cpumask;
+
+ cpumask = cpumask_of_pcibus(to_pci_bus(dev));
+ ret = type ?
+ cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask) :
+ cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask);
+ buf[ret++] = '\n';
+ buf[ret] = '\0';
+ return ret;
+}
+
+static inline ssize_t pci_bus_show_cpumaskaffinity(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return pci_bus_show_cpuaffinity(dev, 0, attr, buf);
+}
+
+static inline ssize_t pci_bus_show_cpulistaffinity(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return pci_bus_show_cpuaffinity(dev, 1, attr, buf);
+}
+
/* show resources */
static ssize_t
resource_show(struct device * dev, struct device_attribute *attr, char * buf)
@@ -318,6 +352,25 @@ remove_store(struct device *dev, struct device_attribute *dummy,
count = ret;
return count;
}
+
+static ssize_t
+dev_bus_rescan_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long val;
+ struct pci_bus *bus = to_pci_bus(dev);
+
+ if (strict_strtoul(buf, 0, &val) < 0)
+ return -EINVAL;
+
+ if (val) {
+ mutex_lock(&pci_remove_rescan_mutex);
+ pci_rescan_bus(bus);
+ mutex_unlock(&pci_remove_rescan_mutex);
+ }
+ return count;
+}
+
#endif
struct device_attribute pci_dev_attrs[] = {
@@ -347,6 +400,15 @@ struct device_attribute pci_dev_attrs[] = {
__ATTR_NULL,
};
+struct device_attribute pcibus_dev_attrs[] = {
+#ifdef CONFIG_HOTPLUG
+ __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store),
+#endif
+ __ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpumaskaffinity, NULL),
+ __ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL),
+ __ATTR_NULL,
+};
+
static ssize_t
boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
{