From: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
To: Hemant Agrawal <hemant.agrawal@nxp.com>,
Nipun Gupta <nipun.gupta@nxp.com>,
Jerin Jacob <jerinj@marvell.com>,
Harry van Haaren <harry.van.haaren@intel.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>,
Narcisa Ana Maria Vasile <navasile@linux.microsoft.com>,
Dmitry Malloy <dmitrym@microsoft.com>,
Pallavi Kadam <pallavi.kadam@intel.com>
Cc: dev@dpdk.org, honnappa.nagarahalli@arm.com, ruifeng.wang@arm.com,
feifei.wang@arm.com, nd@arm.com
Subject: [dpdk-dev] [RFC 3/5] eal: lcore state FINISHED is not required
Date: Wed, 24 Feb 2021 15:20:16 -0600 [thread overview]
Message-ID: <20210224212018.17576-4-honnappa.nagarahalli@arm.com> (raw)
In-Reply-To: <20210224212018.17576-1-honnappa.nagarahalli@arm.com>
FINISHED state seems to be used to indicate that the worker's update
of the 'state' is not visible to other threads. There seems to be no
requirement to have such a state.
Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
---
drivers/event/dpaa2/dpaa2_eventdev_selftest.c | 2 +-
drivers/event/octeontx/ssovf_evdev_selftest.c | 2 +-
drivers/event/sw/sw_evdev_selftest.c | 4 ++--
examples/l2fwd-keepalive/main.c | 2 +-
lib/librte_eal/common/eal_common_launch.c | 7 ++-----
lib/librte_eal/freebsd/eal_thread.c | 2 +-
lib/librte_eal/linux/eal_thread.c | 8 +-------
lib/librte_eal/windows/eal_thread.c | 8 +-------
8 files changed, 10 insertions(+), 25 deletions(-)
diff --git a/drivers/event/dpaa2/dpaa2_eventdev_selftest.c b/drivers/event/dpaa2/dpaa2_eventdev_selftest.c
index cd7311a94..bbbd20951 100644
--- a/drivers/event/dpaa2/dpaa2_eventdev_selftest.c
+++ b/drivers/event/dpaa2/dpaa2_eventdev_selftest.c
@@ -468,7 +468,7 @@ wait_workers_to_join(int lcore, const rte_atomic32_t *count)
RTE_SET_USED(count);
print_cycles = cycles = rte_get_timer_cycles();
- while (rte_eal_get_lcore_state(lcore) != FINISHED) {
+ while (rte_eal_get_lcore_state(lcore) != WAIT) {
uint64_t new_cycles = rte_get_timer_cycles();
if (new_cycles - print_cycles > rte_get_timer_hz()) {
diff --git a/drivers/event/octeontx/ssovf_evdev_selftest.c b/drivers/event/octeontx/ssovf_evdev_selftest.c
index 528f99dd8..d7b0d2211 100644
--- a/drivers/event/octeontx/ssovf_evdev_selftest.c
+++ b/drivers/event/octeontx/ssovf_evdev_selftest.c
@@ -579,7 +579,7 @@ wait_workers_to_join(int lcore, const rte_atomic32_t *count)
RTE_SET_USED(count);
print_cycles = cycles = rte_get_timer_cycles();
- while (rte_eal_get_lcore_state(lcore) != FINISHED) {
+ while (rte_eal_get_lcore_state(lcore) != WAIT) {
uint64_t new_cycles = rte_get_timer_cycles();
if (new_cycles - print_cycles > rte_get_timer_hz()) {
diff --git a/drivers/event/sw/sw_evdev_selftest.c b/drivers/event/sw/sw_evdev_selftest.c
index e4bfb3a0f..7847a8645 100644
--- a/drivers/event/sw/sw_evdev_selftest.c
+++ b/drivers/event/sw/sw_evdev_selftest.c
@@ -3138,8 +3138,8 @@ worker_loopback(struct test *t, uint8_t disable_implicit_release)
rte_eal_remote_launch(worker_loopback_worker_fn, t, w_lcore);
print_cycles = cycles = rte_get_timer_cycles();
- while (rte_eal_get_lcore_state(p_lcore) != FINISHED ||
- rte_eal_get_lcore_state(w_lcore) != FINISHED) {
+ while (rte_eal_get_lcore_state(p_lcore) != WAIT ||
+ rte_eal_get_lcore_state(w_lcore) != WAIT) {
rte_service_run_iter_on_app_lcore(t->service_id, 1);
diff --git a/examples/l2fwd-keepalive/main.c b/examples/l2fwd-keepalive/main.c
index e4c2b2793..dd777c46a 100644
--- a/examples/l2fwd-keepalive/main.c
+++ b/examples/l2fwd-keepalive/main.c
@@ -506,7 +506,7 @@ dead_core(__rte_unused void *ptr_data, const int id_core)
if (terminate_signal_received)
return;
printf("Dead core %i - restarting..\n", id_core);
- if (rte_eal_get_lcore_state(id_core) == FINISHED) {
+ if (rte_eal_get_lcore_state(id_core) == WAIT) {
rte_eal_wait_lcore(id_core);
rte_eal_remote_launch(l2fwd_launch_one_lcore, NULL, id_core);
} else {
diff --git a/lib/librte_eal/common/eal_common_launch.c b/lib/librte_eal/common/eal_common_launch.c
index 34f854ad8..78fd94026 100644
--- a/lib/librte_eal/common/eal_common_launch.c
+++ b/lib/librte_eal/common/eal_common_launch.c
@@ -26,14 +26,11 @@ rte_eal_wait_lcore(unsigned worker_id)
if (lcore_config[worker_id].state == WAIT)
return 0;
- while (lcore_config[worker_id].state != WAIT &&
- lcore_config[worker_id].state != FINISHED)
+ while (lcore_config[worker_id].state != WAIT)
rte_pause();
rte_rmb();
- /* we are in finished state, go to wait state */
- lcore_config[worker_id].state = WAIT;
return lcore_config[worker_id].ret;
}
@@ -62,7 +59,7 @@ rte_eal_mp_remote_launch(int (*f)(void *), void *arg,
if (call_main == CALL_MAIN) {
lcore_config[main_lcore].ret = f(arg);
- lcore_config[main_lcore].state = FINISHED;
+ lcore_config[main_lcore].state = WAIT;
}
return 0;
diff --git a/lib/librte_eal/freebsd/eal_thread.c b/lib/librte_eal/freebsd/eal_thread.c
index 17b8f3996..6d6f1e2fd 100644
--- a/lib/librte_eal/freebsd/eal_thread.c
+++ b/lib/librte_eal/freebsd/eal_thread.c
@@ -140,7 +140,7 @@ eal_thread_loop(__rte_unused void *arg)
lcore_config[lcore_id].f = NULL;
lcore_config[lcore_id].arg = NULL;
rte_wmb();
- lcore_config[lcore_id].state = FINISHED;
+ lcore_config[lcore_id].state = WAIT;
}
/* never reached */
diff --git a/lib/librte_eal/linux/eal_thread.c b/lib/librte_eal/linux/eal_thread.c
index a0a009104..7b9463df3 100644
--- a/lib/librte_eal/linux/eal_thread.c
+++ b/lib/librte_eal/linux/eal_thread.c
@@ -141,13 +141,7 @@ eal_thread_loop(__rte_unused void *arg)
lcore_config[lcore_id].arg = NULL;
rte_wmb();
- /* when a service core returns, it should go directly to WAIT
- * state, because the application will not lcore_wait() for it.
- */
- if (lcore_config[lcore_id].core_role == ROLE_SERVICE)
- lcore_config[lcore_id].state = WAIT;
- else
- lcore_config[lcore_id].state = FINISHED;
+ lcore_config[lcore_id].state = WAIT;
}
/* never reached */
diff --git a/lib/librte_eal/windows/eal_thread.c b/lib/librte_eal/windows/eal_thread.c
index 7a9277c51..35d059a30 100644
--- a/lib/librte_eal/windows/eal_thread.c
+++ b/lib/librte_eal/windows/eal_thread.c
@@ -125,13 +125,7 @@ eal_thread_loop(void *arg __rte_unused)
lcore_config[lcore_id].arg = NULL;
rte_wmb();
- /* when a service core returns, it should go directly to WAIT
- * state, because the application will not lcore_wait() for it.
- */
- if (lcore_config[lcore_id].core_role == ROLE_SERVICE)
- lcore_config[lcore_id].state = WAIT;
- else
- lcore_config[lcore_id].state = FINISHED;
+ lcore_config[lcore_id].state = WAIT;
}
}
--
2.17.1
next prev parent reply other threads:[~2021-02-24 21:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-24 21:20 [dpdk-dev] [RFC 0/5] Use correct memory ordering in eal functions Honnappa Nagarahalli
2021-02-24 21:20 ` [dpdk-dev] [RFC 1/5] eal: reset lcore function pointer and argument Honnappa Nagarahalli
2021-02-24 21:20 ` [dpdk-dev] [RFC 2/5] eal: ensure memory operations are visible to worker Honnappa Nagarahalli
2021-02-24 21:20 ` Honnappa Nagarahalli [this message]
[not found] ` <AM5PR0802MB2465B62994239817E0AC46C59E9E9@AM5PR0802MB2465.eurprd08.prod.outlook.com>
2021-02-25 8:44 ` [dpdk-dev] 回复: [RFC 3/5] eal: lcore state FINISHED is not required Feifei Wang
2021-02-25 23:33 ` [dpdk-dev] " Honnappa Nagarahalli
2021-02-26 8:26 ` Thomas Monjalon
2021-03-02 3:13 ` Honnappa Nagarahalli
2021-03-19 13:42 ` Ananyev, Konstantin
2021-03-30 2:54 ` Honnappa Nagarahalli
2021-03-01 5:55 ` [dpdk-dev] 回复: " Feifei Wang
2021-02-24 21:20 ` [dpdk-dev] [RFC 4/5] eal: ensure memory operations are visible to main Honnappa Nagarahalli
2021-02-24 21:20 ` [dpdk-dev] [RFC 5/5] test/ring: use relaxed barriers for ring stress test Honnappa Nagarahalli
2021-03-01 16:41 ` [dpdk-dev] [RFC 0/5] Use correct memory ordering in eal functions Stephen Hemminger
2021-03-02 16:06 ` Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 0/6] " Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 1/6] eal: reset lcore function pointer and argument Honnappa Nagarahalli
2021-09-10 7:49 ` Bruce Richardson
2021-09-10 8:12 ` David Marchand
2021-09-11 22:19 ` Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 2/6] eal: ensure memory operations are visible to worker Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 3/6] eal: lcore state FINISHED is not required Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 4/6] eal: update rte_eal_wait_lcore definition Honnappa Nagarahalli
2021-09-09 23:37 ` Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 5/6] eal: ensure memory operations are visible to main Honnappa Nagarahalli
2021-09-09 23:13 ` [dpdk-dev] [PATCH v2 6/6] test/ring: use relaxed barriers for ring stress test Honnappa Nagarahalli
2021-10-07 11:55 ` Ananyev, Konstantin
2021-10-07 23:40 ` Honnappa Nagarahalli
2021-10-25 4:52 ` [dpdk-dev] [PATCH v3 0/4] Use correct memory ordering in eal functions Honnappa Nagarahalli
2021-10-25 4:52 ` [dpdk-dev] [PATCH v3 1/4] eal: reset lcore function pointer and argument Honnappa Nagarahalli
2021-10-25 4:52 ` [dpdk-dev] [PATCH v3 2/4] eal: lcore state FINISHED is not required Honnappa Nagarahalli
2021-10-25 4:52 ` [dpdk-dev] [PATCH v3 3/4] eal: use correct memory ordering Honnappa Nagarahalli
2021-10-25 4:52 ` [dpdk-dev] [PATCH v3 4/4] test/ring: use relaxed barriers for ring stress test Honnappa Nagarahalli
2021-10-25 16:23 ` [dpdk-dev] [PATCH v3 0/4] Use correct memory ordering in eal functions David Marchand
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