From: Jerin Jacob <jerinjacobk@gmail.com>
To: Naga Harish K S V <s.v.naga.harish.k@intel.com>
Cc: jerinj@marvell.com, dev@dpdk.org, erik.g.carrillo@intel.com,
pbhagavatula@marvell.com, sthotton@marvell.com
Subject: Re: [PATCH v6 1/3] eventdev/timer: add periodic event timer support
Date: Wed, 14 Sep 2022 20:54:10 +0530 [thread overview]
Message-ID: <CALBAE1NkLxtCHebndxk04oMgnbpq5ecXq64+WeoJuS19w6N=PA@mail.gmail.com> (raw)
In-Reply-To: <20220914135147.1846550-1-s.v.naga.harish.k@intel.com>
On Wed, Sep 14, 2022 at 7:21 PM Naga Harish K S V
<s.v.naga.harish.k@intel.com> wrote:
>
> This patch adds support to configure and use periodic event
> timers in software timer adapter.
>
> The structure ``rte_event_timer_adapter_stats`` is extended
> by adding a new field, ``evtim_drop_count``. This stat
> represents the number of times an event_timer expiry event
> is dropped by the event timer adapter.
>
> update the software eventdev pmd timer_adapter_caps_get
> callback function to report the support of periodic
> event timer capability
>
> Signed-off-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
Fix doc build issue
See: http://mails.dpdk.org/archives/test-report/2022-September/306650.html
> ---
> doc/guides/rel_notes/deprecation.rst | 7 --
> doc/guides/rel_notes/release_22_11.rst | 2 +
> drivers/event/sw/sw_evdev.c | 2 +-
> lib/eventdev/eventdev_pmd.h | 3 +
> lib/eventdev/rte_event_timer_adapter.c | 106 ++++++++++++++++---------
> lib/eventdev/rte_event_timer_adapter.h | 2 +
> lib/eventdev/rte_eventdev.c | 6 +-
> 7 files changed, 83 insertions(+), 45 deletions(-)
>
> diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
> index e7583cae4c..fd8ef4dff7 100644
> --- a/doc/guides/rel_notes/deprecation.rst
> +++ b/doc/guides/rel_notes/deprecation.rst
> @@ -186,13 +186,6 @@ Deprecation Notices
> Event will be one of the configuration fields,
> together with additional vector parameters.
>
> -* eventdev: The structure ``rte_event_timer_adapter_stats`` will be
> - extended by adding a new field ``evtim_drop_count``.
> - This counter will represent the number of times an event_timer expiry event
> - is dropped by the timer adapter.
> - This field will be used to add periodic mode support
> - to the software timer adapter in DPDK 22.11.
> -
> * eventdev: The function pointer declaration ``eventdev_stop_flush_t``
> will be renamed to ``rte_eventdev_stop_flush_t`` in DPDK 22.11.
>
> diff --git a/doc/guides/rel_notes/release_22_11.rst b/doc/guides/rel_notes/release_22_11.rst
> index c32c18ff49..976a74b054 100644
> --- a/doc/guides/rel_notes/release_22_11.rst
> +++ b/doc/guides/rel_notes/release_22_11.rst
> @@ -94,6 +94,8 @@ API Changes
> ABI Changes
> -----------
>
> +* eventdev: Added ``evtim_drop_count`` field to ``rte_event_timer_adapter_stats``
> + structure.
> .. This section should contain ABI changes. Sample format:
>
> * sample: Add a short 1-2 sentence description of the ABI change
> diff --git a/drivers/event/sw/sw_evdev.c b/drivers/event/sw/sw_evdev.c
> index c9efe35bf4..e866150379 100644
> --- a/drivers/event/sw/sw_evdev.c
> +++ b/drivers/event/sw/sw_evdev.c
> @@ -564,7 +564,7 @@ sw_timer_adapter_caps_get(const struct rte_eventdev *dev, uint64_t flags,
> {
> RTE_SET_USED(dev);
> RTE_SET_USED(flags);
> - *caps = 0;
> + *caps = RTE_EVENT_TIMER_ADAPTER_SW_CAP;
>
> /* Use default SW ops */
> *ops = NULL;
> diff --git a/lib/eventdev/eventdev_pmd.h b/lib/eventdev/eventdev_pmd.h
> index f514a37575..085563ff52 100644
> --- a/lib/eventdev/eventdev_pmd.h
> +++ b/lib/eventdev/eventdev_pmd.h
> @@ -81,6 +81,9 @@ extern "C" {
> * the ethdev to eventdev use a SW service function
> */
>
> +#define RTE_EVENT_TIMER_ADAPTER_SW_CAP \
> + RTE_EVENT_TIMER_ADAPTER_CAP_PERIODIC
> +
> #define RTE_EVENTDEV_DETACHED (0)
> #define RTE_EVENTDEV_ATTACHED (1)
>
> diff --git a/lib/eventdev/rte_event_timer_adapter.c b/lib/eventdev/rte_event_timer_adapter.c
> index e0d978d641..d2480060c5 100644
> --- a/lib/eventdev/rte_event_timer_adapter.c
> +++ b/lib/eventdev/rte_event_timer_adapter.c
> @@ -53,6 +53,14 @@ static const struct event_timer_adapter_ops swtim_ops;
> #define EVTIM_SVC_LOG_DBG(...) (void)0
> #endif
>
> +static inline enum rte_timer_type
> +get_timer_type(const struct rte_event_timer_adapter *adapter)
> +{
> + return (adapter->data->conf.flags &
> + RTE_EVENT_TIMER_ADAPTER_F_PERIODIC) ?
> + PERIODICAL : SINGLE;
> +}
> +
> static int
> default_port_conf_cb(uint16_t id, uint8_t event_dev_id, uint8_t *event_port_id,
> void *conf_arg)
> @@ -195,13 +203,14 @@ rte_event_timer_adapter_create_ext(
> adapter->data->conf = *conf; /* copy conf structure */
>
> /* Query eventdev PMD for timer adapter capabilities and ops */
> - ret = dev->dev_ops->timer_adapter_caps_get(dev,
> - adapter->data->conf.flags,
> - &adapter->data->caps,
> - &adapter->ops);
> - if (ret < 0) {
> - rte_errno = -ret;
> - goto free_memzone;
> + if (dev->dev_ops->timer_adapter_caps_get) {
> + ret = dev->dev_ops->timer_adapter_caps_get(dev,
> + adapter->data->conf.flags,
> + &adapter->data->caps, &adapter->ops);
> + if (ret < 0) {
> + rte_errno = -ret;
> + goto free_memzone;
> + }
> }
>
> if (!(adapter->data->caps &
> @@ -348,13 +357,14 @@ rte_event_timer_adapter_lookup(uint16_t adapter_id)
> dev = &rte_eventdevs[adapter->data->event_dev_id];
>
> /* Query eventdev PMD for timer adapter capabilities and ops */
> - ret = dev->dev_ops->timer_adapter_caps_get(dev,
> - adapter->data->conf.flags,
> - &adapter->data->caps,
> - &adapter->ops);
> - if (ret < 0) {
> - rte_errno = EINVAL;
> - return NULL;
> + if (dev->dev_ops->timer_adapter_caps_get) {
> + ret = dev->dev_ops->timer_adapter_caps_get(dev,
> + adapter->data->conf.flags,
> + &adapter->data->caps, &adapter->ops);
> + if (ret < 0) {
> + rte_errno = EINVAL;
> + return NULL;
> + }
> }
>
> /* If eventdev PMD did not provide ops, use default software
> @@ -612,35 +622,44 @@ swtim_callback(struct rte_timer *tim)
> uint64_t opaque;
> int ret;
> int n_lcores;
> + enum rte_timer_type type;
>
> opaque = evtim->impl_opaque[1];
> adapter = (struct rte_event_timer_adapter *)(uintptr_t)opaque;
> sw = swtim_pmd_priv(adapter);
> + type = get_timer_type(adapter);
> +
> + if (unlikely(sw->in_use[lcore].v == 0)) {
> + sw->in_use[lcore].v = 1;
> + n_lcores = __atomic_fetch_add(&sw->n_poll_lcores, 1,
> + __ATOMIC_RELAXED);
> + __atomic_store_n(&sw->poll_lcores[n_lcores], lcore,
> + __ATOMIC_RELAXED);
> + }
>
> ret = event_buffer_add(&sw->buffer, &evtim->ev);
> if (ret < 0) {
> - /* If event buffer is full, put timer back in list with
> - * immediate expiry value, so that we process it again on the
> - * next iteration.
> - */
> - ret = rte_timer_alt_reset(sw->timer_data_id, tim, 0, SINGLE,
> - lcore, NULL, evtim);
> - if (ret < 0) {
> - EVTIM_LOG_DBG("event buffer full, failed to reset "
> - "timer with immediate expiry value");
> + if (type == SINGLE) {
> + /* If event buffer is full, put timer back in list with
> + * immediate expiry value, so that we process it again
> + * on the next iteration.
> + */
> + ret = rte_timer_alt_reset(sw->timer_data_id, tim, 0,
> + SINGLE, lcore, NULL, evtim);
> + if (ret < 0) {
> + EVTIM_LOG_DBG("event buffer full, failed to "
> + "reset timer with immediate "
> + "expiry value");
> + } else {
> + sw->stats.evtim_retry_count++;
> + EVTIM_LOG_DBG("event buffer full, resetting "
> + "rte_timer with immediate "
> + "expiry value");
> + }
> } else {
> - sw->stats.evtim_retry_count++;
> - EVTIM_LOG_DBG("event buffer full, resetting rte_timer "
> - "with immediate expiry value");
> + sw->stats.evtim_drop_count++;
> }
>
> - if (unlikely(sw->in_use[lcore].v == 0)) {
> - sw->in_use[lcore].v = 1;
> - n_lcores = __atomic_fetch_add(&sw->n_poll_lcores, 1,
> - __ATOMIC_RELAXED);
> - __atomic_store_n(&sw->poll_lcores[n_lcores], lcore,
> - __ATOMIC_RELAXED);
> - }
> } else {
> EVTIM_BUF_LOG_DBG("buffered an event timer expiry event");
>
> @@ -654,10 +673,15 @@ swtim_callback(struct rte_timer *tim)
> sw->n_expired_timers = 0;
> }
>
> - sw->expired_timers[sw->n_expired_timers++] = tim;
> + /* Don't free rte_timer for a periodic event timer until
> + * it is cancelled
> + */
> + if (type == SINGLE)
> + sw->expired_timers[sw->n_expired_timers++] = tim;
> sw->stats.evtim_exp_count++;
>
> - __atomic_store_n(&evtim->state, RTE_EVENT_TIMER_NOT_ARMED,
> + if (type == SINGLE)
> + __atomic_store_n(&evtim->state, RTE_EVENT_TIMER_NOT_ARMED,
> __ATOMIC_RELEASE);
> }
>
> @@ -947,6 +971,12 @@ swtim_uninit(struct rte_event_timer_adapter *adapter)
> swtim_free_tim,
> sw);
>
> + ret = rte_timer_data_dealloc(sw->timer_data_id);
> + if (ret < 0) {
> + EVTIM_LOG_ERR("failed to deallocate timer data instance");
> + return ret;
> + }
> +
> ret = rte_service_component_unregister(sw->service_id);
> if (ret < 0) {
> EVTIM_LOG_ERR("failed to unregister service component");
> @@ -1053,6 +1083,7 @@ __swtim_arm_burst(const struct rte_event_timer_adapter *adapter,
> /* Timer list for this lcore is not in use. */
> uint16_t exp_state = 0;
> enum rte_event_timer_state n_state;
> + enum rte_timer_type type = SINGLE;
>
> #ifdef RTE_LIBRTE_EVENTDEV_DEBUG
> /* Check that the service is running. */
> @@ -1092,6 +1123,9 @@ __swtim_arm_burst(const struct rte_event_timer_adapter *adapter,
> return 0;
> }
>
> + /* update timer type for periodic adapter */
> + type = get_timer_type(adapter);
> +
> for (i = 0; i < nb_evtims; i++) {
> n_state = __atomic_load_n(&evtims[i]->state, __ATOMIC_ACQUIRE);
> if (n_state == RTE_EVENT_TIMER_ARMED) {
> @@ -1135,7 +1169,7 @@ __swtim_arm_burst(const struct rte_event_timer_adapter *adapter,
>
> cycles = get_timeout_cycles(evtims[i], adapter);
> ret = rte_timer_alt_reset(sw->timer_data_id, tim, cycles,
> - SINGLE, lcore_id, NULL, evtims[i]);
> + type, lcore_id, NULL, evtims[i]);
> if (ret < 0) {
> /* tim was in RUNNING or CONFIG state */
> __atomic_store_n(&evtims[i]->state,
> diff --git a/lib/eventdev/rte_event_timer_adapter.h b/lib/eventdev/rte_event_timer_adapter.h
> index eab8e59a57..cd10db19e4 100644
> --- a/lib/eventdev/rte_event_timer_adapter.h
> +++ b/lib/eventdev/rte_event_timer_adapter.h
> @@ -193,6 +193,8 @@ struct rte_event_timer_adapter_stats {
> /**< Event timer retry count */
> uint64_t adapter_tick_count;
> /**< Tick count for the adapter, at its resolution */
> + uint64_t evtim_drop_count;
> + /**< event timer expiries dropped */
> };
>
> struct rte_event_timer_adapter;
> diff --git a/lib/eventdev/rte_eventdev.c b/lib/eventdev/rte_eventdev.c
> index 1dc4f966be..59d8b49ef6 100644
> --- a/lib/eventdev/rte_eventdev.c
> +++ b/lib/eventdev/rte_eventdev.c
> @@ -139,7 +139,11 @@ rte_event_timer_adapter_caps_get(uint8_t dev_id, uint32_t *caps)
>
> if (caps == NULL)
> return -EINVAL;
> - *caps = 0;
> +
> + if (dev->dev_ops->timer_adapter_caps_get == NULL)
> + *caps = RTE_EVENT_TIMER_ADAPTER_SW_CAP;
> + else
> + *caps = 0;
>
> return dev->dev_ops->timer_adapter_caps_get ?
> (*dev->dev_ops->timer_adapter_caps_get)(dev,
> --
> 2.25.1
>
next prev parent reply other threads:[~2022-09-14 15:24 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-03 16:25 [PATCH 1/4] " Naga Harish K S V
2022-08-03 16:25 ` [PATCH 4/4] test/event: update periodic event timer tests Naga Harish K S V
2022-08-10 7:07 ` [PATCH v2 1/4] eventdev/timer: add periodic event timer support Naga Harish K S V
2022-08-10 7:07 ` [PATCH v2 4/4] test/event: update periodic event timer tests Naga Harish K S V
2022-08-10 19:55 ` [PATCH v2 1/4] eventdev/timer: add periodic event timer support Carrillo, Erik G
2022-08-11 15:43 ` Naga Harish K, S V
2022-08-11 15:36 ` [PATCH v3 " Naga Harish K S V
2022-08-11 15:36 ` [PATCH v3 4/4] test/event: update periodic event timer tests Naga Harish K S V
2022-08-11 19:22 ` [PATCH v3 1/4] eventdev/timer: add periodic event timer support Carrillo, Erik G
2022-08-12 16:10 ` Naga Harish K, S V
2022-08-12 16:07 ` [PATCH v4 " Naga Harish K S V
2022-08-12 16:07 ` [PATCH v4 4/4] test/event: update periodic event timer tests Naga Harish K S V
2022-08-18 13:13 ` Carrillo, Erik G
2022-08-18 13:06 ` [PATCH v4 1/4] eventdev/timer: add periodic event timer support Carrillo, Erik G
2022-09-14 5:08 ` [PATCH v5 " Naga Harish K S V
2022-09-14 5:08 ` [PATCH v5 2/4] timer: fix function to stop all timers Naga Harish K S V
2022-09-14 5:08 ` [PATCH v5 3/4] test/event: update periodic event timer tests Naga Harish K S V
2022-09-14 5:08 ` [PATCH v5 4/4] doc: remove deprication notice Naga Harish K S V
2022-09-14 5:15 ` [PATCH v5 1/4] eventdev/timer: add periodic event timer support Naga Harish K S V
2022-09-14 5:15 ` [PATCH v5 2/4] timer: fix function to stop all timers Naga Harish K S V
2022-09-14 5:15 ` [PATCH v5 3/4] test/event: update periodic event timer tests Naga Harish K S V
2022-09-14 5:15 ` [PATCH v5 4/4] doc: remove deprecation notice Naga Harish K S V
2022-09-14 12:41 ` Jerin Jacob
2022-09-14 13:54 ` Naga Harish K, S V
2022-09-14 13:51 ` [PATCH v6 1/3] eventdev/timer: add periodic event timer support Naga Harish K S V
2022-09-14 13:51 ` [PATCH v6 2/3] timer: fix function to stop all timers Naga Harish K S V
2022-09-14 13:51 ` [PATCH v6 3/3] test/event: update periodic event timer tests Naga Harish K S V
2022-09-14 15:24 ` Jerin Jacob [this message]
2022-09-14 16:43 ` [PATCH v6 1/3] eventdev/timer: add periodic event timer support Naga Harish K, S V
2022-09-14 15:33 ` [PATCH v7 " Naga Harish K S V
2022-09-14 15:33 ` [PATCH v7 2/3] timer: fix function to stop all timers Naga Harish K S V
2022-09-15 6:41 ` Jerin Jacob
2022-09-16 4:40 ` Naga Harish K, S V
2022-10-05 12:59 ` Thomas Monjalon
2022-09-26 5:21 ` Naga Harish K, S V
2022-09-14 15:33 ` [PATCH v7 3/3] test/event: update periodic event timer tests Naga Harish K S V
2022-09-15 6:43 ` Jerin Jacob
2022-09-15 6:40 ` [PATCH v7 1/3] eventdev/timer: add periodic event timer support Jerin Jacob
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