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event/dlb2: remove references to deferred scheduling

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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 <timothy.mcdaniel@intel.com>
This commit is contained in:
Timothy McDaniel 2021-05-21 11:11:34 +02:00 committed by Thomas Monjalon
parent 701f9f156b
commit 0e94408f00
2 changed files with 0 additions and 24 deletions
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21
doc/guides/eventdevs/dlb2.rst
View File

@ -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
~~~~~~~~~~~~~~~~~~~~~~~~~~~

3
drivers/event/dlb2/dlb2_priv.h
View File

@ -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;