From 720a936d407709dcbcf714293112667677d8c967 Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Tue, 20 Nov 2018 14:12:19 -0800 Subject: [PATCH] net/mlx5: FWTrace, Use async events chain Remove the explicit call to mlx5_fw_tracer_event on MLX5_EVENT_TYPE_DEVICE_TRACER and let fw tracer to register its own handler when its ready. Signed-off-by: Saeed Mahameed --- .../mellanox/mlx5/core/diag/fw_tracer.c | 27 ++++++++++--------- .../mellanox/mlx5/core/diag/fw_tracer.h | 2 +- drivers/net/ethernet/mellanox/mlx5/core/eq.c | 4 --- 3 files changed, 16 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c index d4ec93bde4de..6999f4486e9e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c @@ -30,6 +30,7 @@ * SOFTWARE. */ #define CREATE_TRACE_POINTS +#include "lib/eq.h" #include "fw_tracer.h" #include "fw_tracer_tracepoint.h" @@ -846,9 +847,9 @@ free_tracer: return ERR_PTR(err); } -/* Create HW resources + start tracer - * must be called before Async EQ is created - */ +static int fw_tracer_event(struct notifier_block *nb, unsigned long action, void *data); + +/* Create HW resources + start tracer */ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer) { struct mlx5_core_dev *dev; @@ -874,6 +875,9 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer) goto err_dealloc_pd; } + MLX5_NB_INIT(&tracer->nb, fw_tracer_event, DEVICE_TRACER); + mlx5_eq_notifier_register(dev, &tracer->nb); + mlx5_fw_tracer_start(tracer); return 0; @@ -883,9 +887,7 @@ err_dealloc_pd: return err; } -/* Stop tracer + Cleanup HW resources - * must be called after Async EQ is destroyed - */ +/* Stop tracer + Cleanup HW resources */ void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer) { if (IS_ERR_OR_NULL(tracer)) @@ -893,7 +895,7 @@ void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer) mlx5_core_dbg(tracer->dev, "FWTracer: Cleanup, is owner ? (%d)\n", tracer->owner); - + mlx5_eq_notifier_unregister(tracer->dev, &tracer->nb); cancel_work_sync(&tracer->ownership_change_work); cancel_work_sync(&tracer->handle_traces_work); @@ -922,12 +924,11 @@ void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer) kfree(tracer); } -void mlx5_fw_tracer_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) +static int fw_tracer_event(struct notifier_block *nb, unsigned long action, void *data) { - struct mlx5_fw_tracer *tracer = dev->tracer; - - if (!tracer) - return; + struct mlx5_fw_tracer *tracer = mlx5_nb_cof(nb, struct mlx5_fw_tracer, nb); + struct mlx5_core_dev *dev = tracer->dev; + struct mlx5_eqe *eqe = data; switch (eqe->sub_type) { case MLX5_TRACER_SUBTYPE_OWNERSHIP_CHANGE: @@ -942,6 +943,8 @@ void mlx5_fw_tracer_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) mlx5_core_dbg(dev, "FWTracer: Event with unrecognized subtype: sub_type %d\n", eqe->sub_type); } + + return NOTIFY_OK; } EXPORT_TRACEPOINT_SYMBOL(mlx5_fw); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h index 0347f2dd5cee..a8b8747f2b61 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h @@ -55,6 +55,7 @@ struct mlx5_fw_tracer { struct mlx5_core_dev *dev; + struct mlx5_nb nb; bool owner; u8 trc_ver; struct workqueue_struct *work_queue; @@ -170,6 +171,5 @@ struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev); int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer); void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer); void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer); -void mlx5_fw_tracer_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe); #endif diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c index 34e4b2c246ff..c7c436b0ed2e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c @@ -434,10 +434,6 @@ static irqreturn_t mlx5_eq_async_int(int irq, void *eq_ptr) general_event_handler(dev, eqe); break; - case MLX5_EVENT_TYPE_DEVICE_TRACER: - mlx5_fw_tracer_event(dev, eqe); - break; - default: mlx5_core_warn(dev, "Unhandled event 0x%x on EQ 0x%x\n", eqe->type, eq->eqn); -- 2.30.2