livepatch: Remove signal sysfs attribute

The fake signal is send automatically now. We can rely on it completely
and remove the sysfs attribute.

Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 0 insertions, 32 deletions

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index adca5cf07f7e..fe1993399823 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -313,7 +313,6 @@ static int klp_write_object_relocations(struct module *pmod,
  * /sys/kernel/livepatch/<patch>
  * /sys/kernel/livepatch/<patch>/enabled
  * /sys/kernel/livepatch/<patch>/transition
- * /sys/kernel/livepatch/<patch>/signal
  * /sys/kernel/livepatch/<patch>/force
  * /sys/kernel/livepatch/<patch>/<object>
  * /sys/kernel/livepatch/<patch>/<object>/<function,sympos>
@@ -382,35 +381,6 @@ static ssize_t transition_show(struct kobject *kobj,
                         patch == klp_transition_patch);
 }
 
-static ssize_t signal_store(struct kobject *kobj, struct kobj_attribute *attr,
-                            const char *buf, size_t count)
-{
-        struct klp_patch *patch;
-        int ret;
-        bool val;
-
-        ret = kstrtobool(buf, &val);
-        if (ret)
-                return ret;
-
-        if (!val)
-                return count;
-
-        mutex_lock(&klp_mutex);
-
-        patch = container_of(kobj, struct klp_patch, kobj);
-        if (patch != klp_transition_patch) {
-                mutex_unlock(&klp_mutex);
-                return -EINVAL;
-        }
-
-        klp_send_signals();
-
-        mutex_unlock(&klp_mutex);
-
-        return count;
-}
-
 static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr,
                            const char *buf, size_t count)
 {
@@ -442,12 +412,10 @@ static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr,
 
 static struct kobj_attribute enabled_kobj_attr = __ATTR_RW(enabled);
 static struct kobj_attribute transition_kobj_attr = __ATTR_RO(transition);
-static struct kobj_attribute signal_kobj_attr = __ATTR_WO(signal);
 static struct kobj_attribute force_kobj_attr = __ATTR_WO(force);
 static struct attribute *klp_patch_attrs[] = {
         &enabled_kobj_attr.attr,
         &transition_kobj_attr.attr,
-        &signal_kobj_attr.attr,
         &force_kobj_attr.attr,
         NULL
 };