On 05.12.23 00:49, Stefan Roesch wrote:
This adds four new knobs for the KSM advisor to influence its behaviour. The knobs are: - advisor_mode: none: no advisor (default) scan-time: scan time advisor - advisor_max_cpu: 70 (default, cpu usage percent) - advisor_min_pages: 500 (default) - advisor_max_pages: 30000 (default) - advisor_target_scan_time: 200 (default in seconds) The new values will take effect on the next scan round. Signed-off-by: Stefan Roesch <shr@xxxxxxxxxxxx> --- mm/ksm.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) diff --git a/mm/ksm.c b/mm/ksm.c index b27010fa2e946..18b7185bbc65b 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -3735,6 +3735,128 @@ static ssize_t smart_scan_store(struct kobject *kobj, } KSM_ATTR(smart_scan);+static ssize_t advisor_mode_show(struct kobject *kobj,+ struct kobj_attribute *attr, char *buf) +{ + const char *output; + + if (ksm_advisor == KSM_ADVISOR_NONE) + output = "[none] scan-time"; + else if (ksm_advisor == KSM_ADVISOR_SCAN_TIME) + output = "none [scan-time]"; + + return sysfs_emit(buf, "%s\n", output); +} + +static ssize_t advisor_mode_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, + size_t count) +{ + if (sysfs_streq("scan-time", buf)) + ksm_advisor = KSM_ADVISOR_SCAN_TIME; + else if (sysfs_streq("none", buf)) + ksm_advisor = KSM_ADVISOR_NONE; + else + return -EINVAL; + + /* Set advisor default values */ + init_advisor();
Is the "init_advisor()" really required?
+ set_advisor_defaults();
That function should go to this patch. -- Cheers, David / dhildenb
