From: xu xin <xu.xin16@xxxxxxxxxx>
Add a sysfs interface of ksmd_status to show some details related
with auto-mode.
Signed-off-by: xu xin <xu.xin16@xxxxxxxxxx>
Signed-off-by: CGEL <cgel.zte@xxxxxxxxx>
---
mm/ksm.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/mm/ksm.c b/mm/ksm.c
index 78819b56efec..6417bc034a3d 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -3070,6 +3070,29 @@ static ssize_t run_store(struct kobject *kobj, struct kobj_attribute *attr,
}
KSM_ATTR(run);
+static ssize_t ksmd_status_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int len = 0;
+
+ if (ksm_run & KSM_RUN_AUTO) {
+ len += sysfs_emit_at(buf, len, "mode: auto\n");
+ len += sysfs_emit_at(buf, len, "auto_triggered %d\n",
+ auto_triggered);
+ len += sysfs_emit_at(buf, len, "scanning_factor: %u\n",
+ scanning_factor);
+ } else if (ksm_run & KSM_RUN_MERGE)
+ len += sysfs_emit_at(buf, len, "mode: on\n");
+ else if (ksm_run & KSM_RUN_UNMERGE)
+ len += sysfs_emit_at(buf, len, "mode: unmerge\n");
+ else
+ len += sysfs_emit_at(buf, len, "mode: off\n");
+
+
+ return len;
+}
+KSM_ATTR_RO(ksmd_status);
+
static ssize_t max_scanning_factor_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@@ -3332,6 +3355,7 @@ static struct attribute *ksm_attrs[] = {
&sleep_millisecs_attr.attr,
&pages_to_scan_attr.attr,
&run_attr.attr,
+ &ksmd_status_attr.attr,
&max_scanning_factor_attr.attr,
&auto_threshold_percent_attr.attr,
&pages_shared_attr.attr,
--
2.25.1
