From 0e94408f0028f888c638810973a7f2ddbfdbb795 Mon Sep 17 00:00:00 2001 From: Timothy McDaniel Date: Fri, 21 May 2021 11:11:34 +0200 Subject: [PATCH] event/dlb2: remove references to deferred scheduling Deferred scheduling is a DLB v1.0 feature, and is not valid for DLB v2.0 or v2.5. Fixes: bc62748bd7d4 ("event/dlb2: add private data structures and constants") Fixes: a2e4f1f5e79f ("event/dlb2: add dequeue and its burst variants") Cc: stable@dpdk.org Signed-off-by: Timothy McDaniel --- doc/guides/eventdevs/dlb2.rst | 21 --------------------- drivers/event/dlb2/dlb2_priv.h | 3 --- 2 files changed, 24 deletions(-) diff --git a/doc/guides/eventdevs/dlb2.rst b/doc/guides/eventdevs/dlb2.rst index 31de6bc470..c60c454d6b 100644 --- a/doc/guides/eventdevs/dlb2.rst +++ b/doc/guides/eventdevs/dlb2.rst @@ -293,27 +293,6 @@ The PMD does not support the following configuration sequences: This sequence is not supported because the event device must be reconfigured before its ports or queues can be. -Deferred Scheduling -~~~~~~~~~~~~~~~~~~~ - -The DLB PMD's default behavior for managing a CQ is to "pop" the CQ once per -dequeued event before returning from rte_event_dequeue_burst(). This frees the -corresponding entries in the CQ, which enables the DLB to schedule more events -to it. - -To support applications seeking finer-grained scheduling control -- for example -deferring scheduling to get the best possible priority scheduling and -load-balancing -- the PMD supports a deferred scheduling mode. In this mode, -the CQ entry is not popped until the *subsequent* rte_event_dequeue_burst() -call. This mode only applies to load-balanced event ports with dequeue depth of -1. - -To enable deferred scheduling, use the defer_sched vdev argument like so: - - .. code-block:: console - - --vdev=dlb2_event,defer_sched=on - Atomic Inflights Allocation ~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/drivers/event/dlb2/dlb2_priv.h b/drivers/event/dlb2/dlb2_priv.h index 3140764a59..b1225af37e 100644 --- a/drivers/event/dlb2/dlb2_priv.h +++ b/drivers/event/dlb2/dlb2_priv.h @@ -32,7 +32,6 @@ #define DLB2_MAX_NUM_EVENTS "max_num_events" #define DLB2_NUM_DIR_CREDITS "num_dir_credits" #define DEV_ID_ARG "dev_id" -#define DLB2_DEFER_SCHED_ARG "defer_sched" #define DLB2_QID_DEPTH_THRESH_ARG "qid_depth_thresh" #define DLB2_COS_ARG "cos" #define DLB2_POLL_INTERVAL_ARG "poll_interval" @@ -585,7 +584,6 @@ struct dlb2_eventdev { uint16_t num_dir_ports; /* total num of dir ports requested */ bool umwait_allowed; bool global_dequeue_wait; /* Not using per dequeue wait if true */ - bool defer_sched; enum dlb2_cq_poll_modes poll_mode; int poll_interval; int sw_credit_quanta; @@ -620,7 +618,6 @@ struct dlb2_devargs { int max_num_events; int num_dir_credits_override; int dev_id; - int defer_sched; struct dlb2_qid_depth_thresholds qid_depth_thresholds; enum dlb2_cos cos_id; int poll_interval; -- 2.20.1