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uksm: Add saved_memory to uksm sysfs

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It shows a percent of pages freed to total scanned pages.

Eventually, as uksm continues its job this shows % of saved pages to total memory pages.

Signed-off-by: CTCaer <ctcaer@gmail.com>
This commit is contained in:
CTCaer 2013-05-31 14:39:53 +03:00
parent 9ea8586baa
commit df931c7456
1 changed files with 14 additions and 0 deletions
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14
mm/ksm.c
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@ -194,6 +194,9 @@ static unsigned long ksm_pages_sharing;
/* The number of nodes in the unstable tree */
static unsigned long ksm_pages_unshared;
/* The percent of total pages used freed */
static unsigned int ksm_saved_memory;
/*
* Number of pages ksmd should scan in one batch. This is the top speed for
* richly duplicated areas.
@ -4560,6 +4563,16 @@ static ssize_t pages_sharing_show(struct kobject *kobj,
}
KSM_ATTR_RO(pages_sharing);
static ssize_t saved_memory_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
ksm_saved_memory = 100-(ksm_pages_unshared+ksm_pages_shared)*100
/(ksm_pages_unshared+ksm_pages_sharing);
return sprintf(buf, "%u%% of total used memory pages freed.\n",
ksm_saved_memory);
}
KSM_ATTR_RO(saved_memory);
static ssize_t pages_unshared_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@ -4627,6 +4640,7 @@ static struct attribute *ksm_attrs[] = {
&run_attr.attr,
&pages_shared_attr.attr,
&pages_sharing_attr.attr,
&saved_memory_attr.attr,
&pages_unshared_attr.attr,
&full_scans_attr.attr,
&min_scan_ratio_attr.attr,