From: Saeed Mahameed Date: Mon, 26 Nov 2018 22:39:01 +0000 (-0800) Subject: net/mlx5: Remove unused events callback and logic X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=02039fb659b366011f55b15890136754f3d82e2d;p=openwrt%2Fstaging%2Fblogic.git net/mlx5: Remove unused events callback and logic The mlx5_interface->event callback is not used by mlx5e/mlx5_ib anymore. We totally remove the delayed events logic work around, since with the dynamic notifier registration API it is not needed anymore, mlx5_ib can register its notifier and start receiving events exactly at the moment it is ready to handle them. Signed-off-by: Saeed Mahameed --- diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c index d63ba8813829..d2ed14bc37c3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c @@ -32,7 +32,6 @@ #include #include "mlx5_core.h" -#include "lib/mlx5.h" static LIST_HEAD(intf_list); static LIST_HEAD(mlx5_dev_list); @@ -46,75 +45,11 @@ struct mlx5_device_context { unsigned long state; }; -struct mlx5_delayed_event { - struct list_head list; - struct mlx5_core_dev *dev; - enum mlx5_dev_event event; - unsigned long param; -}; - enum { MLX5_INTERFACE_ADDED, MLX5_INTERFACE_ATTACHED, }; -static void add_delayed_event(struct mlx5_priv *priv, - struct mlx5_core_dev *dev, - enum mlx5_dev_event event, - unsigned long param) -{ - struct mlx5_delayed_event *delayed_event; - - delayed_event = kzalloc(sizeof(*delayed_event), GFP_ATOMIC); - if (!delayed_event) { - mlx5_core_err(dev, "event %d is missed\n", event); - return; - } - - mlx5_core_dbg(dev, "Accumulating event %d\n", event); - delayed_event->dev = dev; - delayed_event->event = event; - delayed_event->param = param; - list_add_tail(&delayed_event->list, &priv->waiting_events_list); -} - -static void delayed_event_release(struct mlx5_device_context *dev_ctx, - struct mlx5_priv *priv) -{ - struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); - struct mlx5_delayed_event *de; - struct mlx5_delayed_event *n; - struct list_head temp; - - INIT_LIST_HEAD(&temp); - - spin_lock_irq(&priv->ctx_lock); - - priv->is_accum_events = false; - list_splice_init(&priv->waiting_events_list, &temp); - if (!dev_ctx->context) - goto out; - list_for_each_entry_safe(de, n, &temp, list) - dev_ctx->intf->event(dev, dev_ctx->context, de->event, de->param); - -out: - spin_unlock_irq(&priv->ctx_lock); - - list_for_each_entry_safe(de, n, &temp, list) { - list_del(&de->list); - kfree(de); - } -} - -/* accumulating events that can come after mlx5_ib calls to - * ib_register_device, till adding that interface to the events list. - */ -static void delayed_event_start(struct mlx5_priv *priv) -{ - spin_lock_irq(&priv->ctx_lock); - priv->is_accum_events = true; - spin_unlock_irq(&priv->ctx_lock); -} void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) { @@ -130,8 +65,6 @@ void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) dev_ctx->intf = intf; - delayed_event_start(priv); - dev_ctx->context = intf->add(dev); if (dev_ctx->context) { set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); @@ -143,8 +76,6 @@ void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) spin_unlock_irq(&priv->ctx_lock); } - delayed_event_release(dev_ctx, priv); - if (!dev_ctx->context) kfree(dev_ctx); } @@ -188,26 +119,20 @@ static void mlx5_attach_interface(struct mlx5_interface *intf, struct mlx5_priv if (!dev_ctx) return; - delayed_event_start(priv); if (intf->attach) { if (test_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state)) - goto out; + return; if (intf->attach(dev, dev_ctx->context)) - goto out; - + return; set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); } else { if (test_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state)) - goto out; + return; dev_ctx->context = intf->add(dev); if (!dev_ctx->context) - goto out; - + return; set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); } - -out: - delayed_event_release(dev_ctx, priv); } void mlx5_attach_device(struct mlx5_core_dev *dev) @@ -403,32 +328,6 @@ struct mlx5_core_dev *mlx5_get_next_phys_dev(struct mlx5_core_dev *dev) return res; } -void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, - unsigned long param) -{ - struct mlx5_priv *priv = &dev->priv; - struct mlx5_device_context *dev_ctx; - unsigned long flags; - - spin_lock_irqsave(&priv->ctx_lock, flags); - - if (priv->is_accum_events) - add_delayed_event(priv, dev, event, param); - - /* After mlx5_detach_device, the dev_ctx->intf is still set and dev_ctx is - * still in priv->ctx_list. In this case, only notify the dev_ctx if its - * ADDED or ATTACHED bit are set. - */ - list_for_each_entry(dev_ctx, &priv->ctx_list, list) - if (dev_ctx->intf->event && - (test_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state) || - test_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state))) - dev_ctx->intf->event(dev, dev_ctx->context, event, param); - - spin_unlock_irqrestore(&priv->ctx_lock, flags); - - mlx5_notifier_call_chain(dev->priv.events, event, (void *)param); -} void mlx5_dev_list_lock(void) { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/events.c b/drivers/net/ethernet/mellanox/mlx5/core/events.c index adab66eb726c..ab66f5d65a04 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/events.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/events.c @@ -178,8 +178,8 @@ static int port_change(struct notifier_block *nb, port, eqe->sub_type); } - if (dev->event && dev_event_dispatch) - dev->event(dev, dev_event, dev_event_data); + if (dev_event_dispatch) + mlx5_notifier_call_chain(events, dev_event, (void *)dev_event_data); return NOTIFY_OK; } @@ -207,8 +207,8 @@ static int general_event(struct notifier_block *nb, unsigned long type, void *da eqe->sub_type); } - if (dev->event && dev_event_dispatch) - dev->event(dev, dev_event, dev_event_data); + if (dev_event_dispatch) + mlx5_notifier_call_chain(events, dev_event, (void *)dev_event_data); return NOTIFY_OK; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/health.c b/drivers/net/ethernet/mellanox/mlx5/core/health.c index 4e42bd290959..196c07383082 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/health.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/health.c @@ -39,6 +39,7 @@ #include #include "mlx5_core.h" #include "lib/eq.h" +#include "lib/mlx5.h" enum { MLX5_HEALTH_POLL_INTERVAL = 2 * HZ, @@ -105,7 +106,7 @@ void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force) mlx5_cmd_trigger_completions(dev); } - mlx5_core_event(dev, MLX5_DEV_EVENT_SYS_ERROR, 1); + mlx5_notifier_call_chain(dev->priv.events, MLX5_DEV_EVENT_SYS_ERROR, (void *)1); mlx5_core_err(dev, "end\n"); unlock: diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index e56278ead4eb..4bc27a073dc4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1125,12 +1125,6 @@ out: return err; } -struct mlx5_core_event_handler { - void (*event)(struct mlx5_core_dev *dev, - enum mlx5_dev_event event, - void *data); -}; - static const struct devlink_ops mlx5_devlink_ops = { #ifdef CONFIG_MLX5_ESWITCH .eswitch_mode_set = mlx5_devlink_eswitch_mode_set, @@ -1164,7 +1158,6 @@ static int init_one(struct pci_dev *pdev, pci_set_drvdata(pdev, dev); dev->pdev = pdev; - dev->event = mlx5_core_event; dev->profile = &profile[prof_sel]; INIT_LIST_HEAD(&priv->ctx_list); @@ -1172,9 +1165,6 @@ static int init_one(struct pci_dev *pdev, mutex_init(&dev->pci_status_mutex); mutex_init(&dev->intf_state_mutex); - INIT_LIST_HEAD(&priv->waiting_events_list); - priv->is_accum_events = false; - mutex_init(&priv->bfregs.reg_head.lock); mutex_init(&priv->bfregs.wc_head.lock); INIT_LIST_HEAD(&priv->bfregs.reg_head.list); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h index c70bd94e18d6..fd3141a4b3f1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h @@ -102,9 +102,6 @@ int mlx5_cmd_init_hca(struct mlx5_core_dev *dev, uint32_t *sw_owner_id); int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev); int mlx5_cmd_force_teardown_hca(struct mlx5_core_dev *dev); int mlx5_cmd_fast_teardown_hca(struct mlx5_core_dev *dev); - -void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, - unsigned long param); void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force); void mlx5_disable_device(struct mlx5_core_dev *dev); void mlx5_recover_device(struct mlx5_core_dev *dev); diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 14ca74707275..d3ffc64f9a75 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -588,10 +588,7 @@ struct mlx5_priv { struct list_head dev_list; struct list_head ctx_list; spinlock_t ctx_lock; - - struct list_head waiting_events_list; - bool is_accum_events; - struct mlx5_events *events; + struct mlx5_events *events; struct mlx5_flow_steering *steering; struct mlx5_mpfs *mpfs; @@ -696,9 +693,6 @@ struct mlx5_core_dev { /* sync interface state */ struct mutex intf_state_mutex; unsigned long intf_state; - void (*event) (struct mlx5_core_dev *dev, - enum mlx5_dev_event event, - unsigned long param); struct mlx5_priv priv; struct mlx5_profile *profile; atomic_t num_qps; @@ -1053,8 +1047,6 @@ struct mlx5_interface { void (*remove)(struct mlx5_core_dev *dev, void *context); int (*attach)(struct mlx5_core_dev *dev, void *context); void (*detach)(struct mlx5_core_dev *dev, void *context); - void (*event)(struct mlx5_core_dev *dev, void *context, - enum mlx5_dev_event event, unsigned long param); void * (*get_dev)(void *context); int protocol; struct list_head list;