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| author | Linus Walleij <[email protected]> | 2015-12-21 08:36:21 +0000 |
|---|---|---|
| committer | Linus Walleij <[email protected]> | 2015-12-21 08:36:21 +0000 |
| commit | 0529357f102b96f68bc199f858d1c3b07f4b674c (patch) | |
| tree | eaa047952a768099e00a5245afa0d84799df6990 /drivers/infiniband/hw/mlx5/mr.c | |
| parent | gpio: pch: fix non-DT build (diff) | |
| parent | Linux 4.4-rc6 (diff) | |
| download | kernel-0529357f102b96f68bc199f858d1c3b07f4b674c.tar.gz kernel-0529357f102b96f68bc199f858d1c3b07f4b674c.zip | |
Merge tag 'v4.4-rc6' into devel
Linux 4.4-rc6
Diffstat (limited to 'drivers/infiniband/hw/mlx5/mr.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mr.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index ec8993a7b3be..6000f7aeede9 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -381,7 +381,19 @@ static void __cache_work_func(struct mlx5_cache_ent *ent) } } } else if (ent->cur > 2 * ent->limit) { - if (!someone_adding(cache) && + /* + * The remove_keys() logic is performed as garbage collection + * task. Such task is intended to be run when no other active + * processes are running. + * + * The need_resched() will return TRUE if there are user tasks + * to be activated in near future. + * + * In such case, we don't execute remove_keys() and postpone + * the garbage collection work to try to run in next cycle, + * in order to free CPU resources to other tasks. + */ + if (!need_resched() && !someone_adding(cache) && time_after(jiffies, cache->last_add + 300 * HZ)) { remove_keys(dev, i, 1); if (ent->cur > ent->limit) |