hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAG93D -------------------------------- The L3 cache occupancy limbo handler monitors idle RMIDs. If it detects that the cache occupancy of the monitored RMID is below the max_threshold_occupancy setting value, it will release the RMID from the limbo back to the rmid_free list. However, in scenarios where the user sets a high max_threshold_occupancy value and frequently creates or deletes monitoring groups, or simply frequently mounts and unmounts the resctrl filesystem, because of the limbo handler delayed scheduling, it can cause idle RMIDs to not be released back to the rmid_free list in time, which leads to the creating monitor group operations failing with ENOSPC. Fixes: 13e249bf4944 ("x86/resctrl: Move the filesystem portions of resctrl to live in '/fs/'") Signed-off-by: Zeng Heng <zengheng4@huawei.com> --- fs/resctrl/monitor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/resctrl/monitor.c b/fs/resctrl/monitor.c index fb60316199c4..66ebfaa26e28 100644 --- a/fs/resctrl/monitor.c +++ b/fs/resctrl/monitor.c @@ -289,7 +289,7 @@ static void add_rmid_to_limbo(struct rmid_entry *entry) * setup up the limbo worker. */ if (!has_busy_rmid(d)) - cqm_setup_limbo_handler(d, CQM_LIMBOCHECK_INTERVAL, + cqm_setup_limbo_handler(d, 0, RESCTRL_PICK_ANY_CPU); set_bit(idx, d->rmid_busy_llc); entry->busy++; -- 2.25.1