X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=kernel%2Fksysfs.c;h=08dd8ed86c77a7f7d05316a794f2eaf2f378c058;hb=34e7dc6ca4a663a1bb0a0a4e118426849dccd72d;hp=65daa5373ca6354afc0c575c1938ed1e9a08c300;hpb=c4ec20717313daafba59225f812db89595952b83;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 65daa5373ca..08dd8ed86c7 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -14,33 +14,38 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kexec.h>
+#include <linux/profile.h>
 #include <linux/sched.h>
 
 #define KERNEL_ATTR_RO(_name) \
-static struct subsys_attribute _name##_attr = __ATTR_RO(_name)
+static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
 
 #define KERNEL_ATTR_RW(_name) \
-static struct subsys_attribute _name##_attr = \
+static struct kobj_attribute _name##_attr = \
 	__ATTR(_name, 0644, _name##_show, _name##_store)
 
 #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
 /* current uevent sequence number */
-static ssize_t uevent_seqnum_show(struct kset *kset, char *page)
+static ssize_t uevent_seqnum_show(struct kobject *kobj,
+				  struct kobj_attribute *attr, char *buf)
 {
-	return sprintf(page, "%llu\n", (unsigned long long)uevent_seqnum);
+	return sprintf(buf, "%llu\n", (unsigned long long)uevent_seqnum);
 }
 KERNEL_ATTR_RO(uevent_seqnum);
 
 /* uevent helper program, used during early boo */
-static ssize_t uevent_helper_show(struct kset *kset, char *page)
+static ssize_t uevent_helper_show(struct kobject *kobj,
+				  struct kobj_attribute *attr, char *buf)
 {
-	return sprintf(page, "%s\n", uevent_helper);
+	return sprintf(buf, "%s\n", uevent_helper);
 }
-static ssize_t uevent_helper_store(struct kset *kset, const char *page, size_t count)
+static ssize_t uevent_helper_store(struct kobject *kobj,
+				   struct kobj_attribute *attr,
+				   const char *buf, size_t count)
 {
 	if (count+1 > UEVENT_HELPER_PATH_LEN)
 		return -ENOENT;
-	memcpy(uevent_helper, page, count);
+	memcpy(uevent_helper, buf, count);
 	uevent_helper[count] = '\0';
 	if (count && uevent_helper[count-1] == '\n')
 		uevent_helper[count-1] = '\0';
@@ -49,22 +54,56 @@ static ssize_t uevent_helper_store(struct kset *kset, const char *page, size_t c
 KERNEL_ATTR_RW(uevent_helper);
 #endif
 
+#ifdef CONFIG_PROFILING
+static ssize_t profiling_show(struct kobject *kobj,
+				  struct kobj_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%d\n", prof_on);
+}
+static ssize_t profiling_store(struct kobject *kobj,
+				   struct kobj_attribute *attr,
+				   const char *buf, size_t count)
+{
+	int ret;
+
+	if (prof_on)
+		return -EEXIST;
+	/*
+	 * This eventually calls into get_option() which
+	 * has a ton of callers and is not const.  It is
+	 * easiest to cast it away here.
+	 */
+	profile_setup((char *)buf);
+	ret = profile_init();
+	if (ret)
+		return ret;
+	ret = create_proc_profile();
+	if (ret)
+		return ret;
+	return count;
+}
+KERNEL_ATTR_RW(profiling);
+#endif
+
 #ifdef CONFIG_KEXEC
-static ssize_t kexec_loaded_show(struct kset *kset, char *page)
+static ssize_t kexec_loaded_show(struct kobject *kobj,
+				 struct kobj_attribute *attr, char *buf)
 {
-	return sprintf(page, "%d\n", !!kexec_image);
+	return sprintf(buf, "%d\n", !!kexec_image);
 }
 KERNEL_ATTR_RO(kexec_loaded);
 
-static ssize_t kexec_crash_loaded_show(struct kset *kset, char *page)
+static ssize_t kexec_crash_loaded_show(struct kobject *kobj,
+				       struct kobj_attribute *attr, char *buf)
 {
-	return sprintf(page, "%d\n", !!kexec_crash_image);
+	return sprintf(buf, "%d\n", !!kexec_crash_image);
 }
 KERNEL_ATTR_RO(kexec_crash_loaded);
 
-static ssize_t vmcoreinfo_show(struct kset *kset, char *page)
+static ssize_t vmcoreinfo_show(struct kobject *kobj,
+			       struct kobj_attribute *attr, char *buf)
 {
-	return sprintf(page, "%lx %x\n",
+	return sprintf(buf, "%lx %x\n",
 		       paddr_vmcoreinfo_note(),
 		       (unsigned int)vmcoreinfo_max_size);
 }
@@ -94,14 +133,17 @@ static struct bin_attribute notes_attr = {
 	.read = &notes_read,
 };
 
-decl_subsys(kernel, NULL, NULL);
-EXPORT_SYMBOL_GPL(kernel_subsys);
+struct kobject *kernel_kobj;
+EXPORT_SYMBOL_GPL(kernel_kobj);
 
 static struct attribute * kernel_attrs[] = {
 #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
 	&uevent_seqnum_attr.attr,
 	&uevent_helper_attr.attr,
 #endif
+#ifdef CONFIG_PROFILING
+	&profiling_attr.attr,
+#endif
 #ifdef CONFIG_KEXEC
 	&kexec_loaded_attr.attr,
 	&kexec_crash_loaded_attr.attr,
@@ -116,24 +158,39 @@ static struct attribute_group kernel_attr_group = {
 
 static int __init ksysfs_init(void)
 {
-	int error = subsystem_register(&kernel_subsys);
-	if (!error)
-		error = sysfs_create_group(&kernel_subsys.kobj,
-					   &kernel_attr_group);
+	int error;
 
-	if (!error && notes_size > 0) {
-		notes_attr.size = notes_size;
-		error = sysfs_create_bin_file(&kernel_subsys.kobj,
-					      &notes_attr);
+	kernel_kobj = kobject_create_and_add("kernel", NULL);
+	if (!kernel_kobj) {
+		error = -ENOMEM;
+		goto exit;
 	}
+	error = sysfs_create_group(kernel_kobj, &kernel_attr_group);
+	if (error)
+		goto kset_exit;
 
-	/*
-	 * Create "/sys/kernel/uids" directory and corresponding root user's
-	 * directory under it.
-	 */
-	if (!error)
-		error = uids_kobject_init();
+	if (notes_size > 0) {
+		notes_attr.size = notes_size;
+		error = sysfs_create_bin_file(kernel_kobj, &notes_attr);
+		if (error)
+			goto group_exit;
+	}
 
+	/* create the /sys/kernel/uids/ directory */
+	error = uids_sysfs_init();
+	if (error)
+		goto notes_exit;
+
+	return 0;
+
+notes_exit:
+	if (notes_size > 0)
+		sysfs_remove_bin_file(kernel_kobj, &notes_attr);
+group_exit:
+	sysfs_remove_group(kernel_kobj, &kernel_attr_group);
+kset_exit:
+	kobject_put(kernel_kobj);
+exit:
 	return error;
 }