ipc,msg: introduce lockless functions to obtain the ipc object

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / ksysfs.c

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 4e316e1..6ada93c 100644 (file)
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -26,7 +26,6 @@ static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
 static struct kobj_attribute _name##_attr = \
        __ATTR(_name, 0644, _name##_show, _name##_store)
 
-#if defined(CONFIG_HOTPLUG)
 /* current uevent sequence number */
 static ssize_t uevent_seqnum_show(struct kobject *kobj,
                                  struct kobj_attribute *attr, char *buf)
@@ -54,7 +53,7 @@ static ssize_t uevent_helper_store(struct kobject *kobj,
        return count;
 }
 KERNEL_ATTR_RW(uevent_helper);
-#endif
+
 
 #ifdef CONFIG_PROFILING
 static ssize_t profiling_show(struct kobject *kobj,
@@ -141,6 +140,23 @@ static ssize_t fscaps_show(struct kobject *kobj,
 }
 KERNEL_ATTR_RO(fscaps);
 
+int rcu_expedited;
+static ssize_t rcu_expedited_show(struct kobject *kobj,
+                                 struct kobj_attribute *attr, char *buf)
+{
+       return sprintf(buf, "%d\n", rcu_expedited);
+}
+static ssize_t rcu_expedited_store(struct kobject *kobj,
+                                  struct kobj_attribute *attr,
+                                  const char *buf, size_t count)
+{
+       if (kstrtoint(buf, 0, &rcu_expedited))
+               return -EINVAL;
+
+       return count;
+}
+KERNEL_ATTR_RW(rcu_expedited);
+
 /*
  * Make /sys/kernel/notes give the raw contents of our kernel .notes section.
  */
@@ -169,10 +185,8 @@ EXPORT_SYMBOL_GPL(kernel_kobj);
 
 static struct attribute * kernel_attrs[] = {
        &fscaps_attr.attr,
-#if defined(CONFIG_HOTPLUG)
        &uevent_seqnum_attr.attr,
        &uevent_helper_attr.attr,
-#endif
 #ifdef CONFIG_PROFILING
        &profiling_attr.attr,
 #endif
@@ -182,6 +196,7 @@ static struct attribute * kernel_attrs[] = {
        &kexec_crash_size_attr.attr,
        &vmcoreinfo_attr.attr,
 #endif
+       &rcu_expedited_attr.attr,
        NULL
 };