[PATCH 1/2] pci, sysfs: move bus cpuaffinity to class dev_attrs

[PATCH 1/2] pci, sysfs: move bus cpuaffinity to class dev_attrs

[Yinghai Lu]

Requested by Greg KH

need to apply after
 [PATCH -v4 1/3] pci: add rescan to /sys/.../pci_bus/.../

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 drivers/pci/bus.c       |    6 ------
 drivers/pci/pci-sysfs.c |   36 ++++++++++++++++++++++++++++++++++++
 drivers/pci/pci.h       |    2 --
 drivers/pci/probe.c     |   42 ------------------------------------------
 drivers/pci/remove.c    |    2 --
 5 files changed, 36 insertions(+), 52 deletions(-)

Index: linux-2.6/drivers/pci/pci-sysfs.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-sysfs.c
+++ linux-2.6/drivers/pci/pci-sysfs.c
@@ -108,6 +108,40 @@ static ssize_t local_cpulist_show(struct
 	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)
@@ -370,6 +404,8 @@ 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,
 };
 
Index: linux-2.6/drivers/pci/bus.c
===================================================================
--- linux-2.6.orig/drivers/pci/bus.c
+++ linux-2.6/drivers/pci/bus.c
@@ -163,12 +163,6 @@ int pci_bus_add_child(struct pci_bus *bu
 
 	bus->is_added = 1;
 
-	retval = device_create_file(&bus->dev, &dev_attr_cpuaffinity);
-	if (retval)
-		return retval;
-
-	retval = device_create_file(&bus->dev, &dev_attr_cpulistaffinity);
-
 	/* Create legacy_io and legacy_mem files for this bus */
 	pci_create_legacy_files(bus);
 
Index: linux-2.6/drivers/pci/pci.h
===================================================================
--- linux-2.6.orig/drivers/pci/pci.h
+++ linux-2.6/drivers/pci/pci.h
@@ -157,8 +157,6 @@ static inline int pci_no_d1d2(struct pci
 }
 extern struct device_attribute pci_dev_attrs[];
 extern struct device_attribute pcibus_dev_attrs[];
-extern struct device_attribute dev_attr_cpuaffinity;
-extern struct device_attribute dev_attr_cpulistaffinity;
 #ifdef CONFIG_HOTPLUG
 extern struct bus_attribute pci_bus_attrs[];
 #else
Index: linux-2.6/drivers/pci/probe.c
===================================================================
--- linux-2.6.orig/drivers/pci/probe.c
+++ linux-2.6/drivers/pci/probe.c
@@ -43,43 +43,6 @@ int no_pci_devices(void)
 EXPORT_SYMBOL(no_pci_devices);
 
 /*
- * 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 ssize_t inline pci_bus_show_cpumaskaffinity(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	return pci_bus_show_cpuaffinity(dev, 0, attr, buf);
-}
-
-static ssize_t inline pci_bus_show_cpulistaffinity(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	return pci_bus_show_cpuaffinity(dev, 1, attr, buf);
-}
-
-DEVICE_ATTR(cpuaffinity,     S_IRUGO, pci_bus_show_cpumaskaffinity, NULL);
-DEVICE_ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL);
-
-/*
  * PCI Bus Class
  */
 static void release_pcibus_dev(struct device *dev)
@@ -1469,9 +1432,6 @@ struct pci_bus * pci_create_bus(struct d
 	error = device_register(&b->dev);
 	if (error)
 		goto class_dev_reg_err;
-	error = device_create_file(&b->dev, &dev_attr_cpuaffinity);
-	if (error)
-		goto dev_create_file_err;
 
 	/* Create legacy_io and legacy_mem files for this bus */
 	pci_create_legacy_files(b);
@@ -1482,8 +1442,6 @@ struct pci_bus * pci_create_bus(struct d
 
 	return b;
 
-dev_create_file_err:
-	device_unregister(&b->dev);
 class_dev_reg_err:
 	device_unregister(dev);
 dev_reg_err:
Index: linux-2.6/drivers/pci/remove.c
===================================================================
--- linux-2.6.orig/drivers/pci/remove.c
+++ linux-2.6/drivers/pci/remove.c
@@ -73,8 +73,6 @@ void pci_remove_bus(struct pci_bus *pci_
 		return;
 
 	pci_remove_legacy_files(pci_bus);
-	device_remove_file(&pci_bus->dev, &dev_attr_cpuaffinity);
-	device_remove_file(&pci_bus->dev, &dev_attr_cpulistaffinity);
 	device_unregister(&pci_bus->dev);
 }
 EXPORT_SYMBOL(pci_remove_bus);

[PATCH 2/2] pci, sysfs: merge dev and bus cpuaffinity

[Yinghai Lu]

merge them one function with two extra parameters.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 drivers/pci/pci-sysfs.c |   69 ++++++++++++++++++------------------------------
 1 file changed, 27 insertions(+), 42 deletions(-)

Index: linux-2.6/drivers/pci/pci-sysfs.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-sysfs.c
+++ linux-2.6/drivers/pci/pci-sysfs.c
@@ -71,75 +71,60 @@ static ssize_t broken_parity_status_stor
 	return count;
 }
 
-static ssize_t local_cpus_show(struct device *dev,
-			struct device_attribute *attr, char *buf)
-{		
-	const struct cpumask *mask;
+static ssize_t pci_show_cpuaffinity(struct device *dev,
+					int type, bool is_pci_dev,
+					struct device_attribute *attr,
+					char *buf)
+{
 	int len;
+	const struct cpumask *mask;
 
+	if (is_pci_dev) {
 #ifdef CONFIG_NUMA
-	mask = (dev_to_node(dev) == -1) ? cpu_online_mask :
-					  cpumask_of_node(dev_to_node(dev));
+		int node = dev_to_node(dev);
+
+		mask = (node == -1) ? cpu_online_mask : cpumask_of_node(node);
 #else
-	mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
+		mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
 #endif
-	len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
+	} else
+		mask = cpumask_of_pcibus(to_pci_bus(dev));
+	len = type ?
+		cpulist_scnprintf(buf, PAGE_SIZE-2, mask) :
+		cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
 	buf[len++] = '\n';
 	buf[len] = '\0';
 	return len;
 }
 
+static ssize_t local_cpus_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	return pci_show_cpuaffinity(dev, 0, true, attr, buf);
+}
+
 
 static ssize_t local_cpulist_show(struct device *dev,
 			struct device_attribute *attr, char *buf)
 {
-	const struct cpumask *mask;
-	int len;
-
-#ifdef CONFIG_NUMA
-	mask = (dev_to_node(dev) == -1) ? cpu_online_mask :
-					  cpumask_of_node(dev_to_node(dev));
-#else
-	mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
-#endif
-	len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
-	buf[len++] = '\n';
-	buf[len] = '\0';
-	return len;
+	return pci_show_cpuaffinity(dev, 1, true, attr, buf);
 }
 
 /*
  * 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,
+static ssize_t pci_bus_show_cpumaskaffinity(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
 {
-	return pci_bus_show_cpuaffinity(dev, 0, attr, buf);
+	return pci_show_cpuaffinity(dev, 0, false, attr, buf);
 }
 
-static inline ssize_t pci_bus_show_cpulistaffinity(struct device *dev,
+static ssize_t pci_bus_show_cpulistaffinity(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
 {
-	return pci_bus_show_cpuaffinity(dev, 1, attr, buf);
+	return pci_show_cpuaffinity(dev, 1, false, attr, buf);
 }
 
 /* show resources */