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| author | Leon Romanovsky <leonro@nvidia.com> | 2021-10-21 08:27:39 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leonro@nvidia.com> | 2021-10-21 08:27:39 +0300 |
| commit | 60dd57c7479418e2bc902143eb46a2fdcfeecbbb (patch) | |
| tree | ab6005faf6076a4c93fdfbcdccc1ff4bc044c8ec /kernel/workqueue.c | |
| parent | b8dfed636fc6239396c3a2ae5f812505906cf215 (diff) | |
| parent | ae0579acde812bc1efd074086ae3bc5eae170f20 (diff) | |
| download | cachepc-linux-60dd57c7479418e2bc902143eb46a2fdcfeecbbb.tar.gz cachepc-linux-60dd57c7479418e2bc902143eb46a2fdcfeecbbb.zip | |
Merge brank 'mlx5_mkey' into rdma.git for-next
A small series to clean up the mlx5 mkey code across the mlx5_core and
InfiniBand.
* branch 'mlx5_mkey':
RDMA/mlx5: Attach ndescs to mlx5_ib_mkey
RDMA/mlx5: Move struct mlx5_core_mkey to mlx5_ib
RDMA/mlx5: Replace struct mlx5_core_mkey by u32 key
RDMA/mlx5: Remove pd from struct mlx5_core_mkey
RDMA/mlx5: Remove size from struct mlx5_core_mkey
RDMA/mlx5: Remove iova from struct mlx5_core_mkey
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 33a6b4a2443d..1b3eb1e9531f 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -4830,8 +4830,16 @@ void show_workqueue_state(void) for_each_pwq(pwq, wq) { raw_spin_lock_irqsave(&pwq->pool->lock, flags); - if (pwq->nr_active || !list_empty(&pwq->inactive_works)) + if (pwq->nr_active || !list_empty(&pwq->inactive_works)) { + /* + * Defer printing to avoid deadlocks in console + * drivers that queue work while holding locks + * also taken in their write paths. + */ + printk_deferred_enter(); show_pwq(pwq); + printk_deferred_exit(); + } raw_spin_unlock_irqrestore(&pwq->pool->lock, flags); /* * We could be printing a lot from atomic context, e.g. @@ -4849,7 +4857,12 @@ void show_workqueue_state(void) raw_spin_lock_irqsave(&pool->lock, flags); if (pool->nr_workers == pool->nr_idle) goto next_pool; - + /* + * Defer printing to avoid deadlocks in console drivers that + * queue work while holding locks also taken in their write + * paths. + */ + printk_deferred_enter(); pr_info("pool %d:", pool->id); pr_cont_pool_info(pool); pr_cont(" hung=%us workers=%d", @@ -4864,6 +4877,7 @@ void show_workqueue_state(void) first = false; } pr_cont("\n"); + printk_deferred_exit(); next_pool: raw_spin_unlock_irqrestore(&pool->lock, flags); /* |