From: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
To: Joyce Kong <Joyce.Kong@arm.com>, Xiaoyun Li <xiaoyun.li@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, nd <nd@arm.com>,
Joyce Kong <Joyce.Kong@arm.com>,
Ruifeng Wang <Ruifeng.Wang@arm.com>, nd <nd@arm.com>
Subject: RE: [PATCH v2 10/12] app/testpmd: remove atomic operations for port status
Date: Tue, 16 Nov 2021 21:34:25 +0000 [thread overview]
Message-ID: <DBAPR08MB581426C11EB8398C8078A94298999@DBAPR08MB5814.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <20211116094205.750359-11-joyce.kong@arm.com>
<snip>
>
> The port_status changes do not need to be handled atomically, as they are
> modified during initialization or through the testpmd prompt instead of
> multiple threads.
>
> Signed-off-by: Joyce Kong <joyce.kong@arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
> ---
> app/test-pmd/testpmd.c | 58 ++++++++++++++++++++++--------------------
> 1 file changed, 31 insertions(+), 27 deletions(-)
>
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index
> a66dfb297c..ed472cacd2 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -36,7 +36,6 @@
> #include <rte_alarm.h>
> #include <rte_per_lcore.h>
> #include <rte_lcore.h>
> -#include <rte_atomic.h>
> #include <rte_branch_prediction.h>
> #include <rte_mempool.h>
> #include <rte_malloc.h>
> @@ -2521,9 +2520,9 @@ setup_hairpin_queues(portid_t pi, portid_t p_pi,
> uint16_t cnt_pi)
> continue;
>
> /* Fail to setup rx queue, return */
> - if (rte_atomic16_cmpset(&(port->port_status),
> - RTE_PORT_HANDLING,
> - RTE_PORT_STOPPED) == 0)
> + if (port->port_status == RTE_PORT_HANDLING)
> + port->port_status = RTE_PORT_STOPPED;
> + else
> fprintf(stderr,
> "Port %d can not be set back to stopped\n",
> pi);
> fprintf(stderr, "Fail to configure port %d hairpin queues\n",
> @@ -2544,9 +2543,9 @@ setup_hairpin_queues(portid_t pi, portid_t p_pi,
> uint16_t cnt_pi)
> continue;
>
> /* Fail to setup rx queue, return */
> - if (rte_atomic16_cmpset(&(port->port_status),
> - RTE_PORT_HANDLING,
> - RTE_PORT_STOPPED) == 0)
> + if (port->port_status == RTE_PORT_HANDLING)
> + port->port_status = RTE_PORT_STOPPED;
> + else
> fprintf(stderr,
> "Port %d can not be set back to stopped\n",
> pi);
> fprintf(stderr, "Fail to configure port %d hairpin queues\n",
> @@ -2729,8 +2728,9 @@ start_port(portid_t pid)
>
> need_check_link_status = 0;
> port = &ports[pi];
> - if (rte_atomic16_cmpset(&(port->port_status),
> RTE_PORT_STOPPED,
> - RTE_PORT_HANDLING) == 0)
> {
> + if (port->port_status == RTE_PORT_STOPPED)
> + port->port_status = RTE_PORT_HANDLING;
> + else {
> fprintf(stderr, "Port %d is now not stopped\n", pi);
> continue;
> }
> @@ -2766,8 +2766,9 @@ start_port(portid_t pid)
> nb_txq + nb_hairpinq,
> &(port->dev_conf));
> if (diag != 0) {
> - if (rte_atomic16_cmpset(&(port-
> >port_status),
> - RTE_PORT_HANDLING, RTE_PORT_STOPPED)
> == 0)
> + if (port->port_status ==
> RTE_PORT_HANDLING)
> + port->port_status =
> RTE_PORT_STOPPED;
> + else
> fprintf(stderr,
> "Port %d can not be set back
> to stopped\n",
> pi);
> @@ -2828,9 +2829,9 @@ start_port(portid_t pid)
> continue;
>
> /* Fail to setup tx queue, return */
> - if (rte_atomic16_cmpset(&(port-
> >port_status),
> -
> RTE_PORT_HANDLING,
> - RTE_PORT_STOPPED)
> == 0)
> + if (port->port_status ==
> RTE_PORT_HANDLING)
> + port->port_status =
> RTE_PORT_STOPPED;
> + else
> fprintf(stderr,
> "Port %d can not be set back
> to stopped\n",
> pi);
> @@ -2880,9 +2881,9 @@ start_port(portid_t pid)
> continue;
>
> /* Fail to setup rx queue, return */
> - if (rte_atomic16_cmpset(&(port-
> >port_status),
> -
> RTE_PORT_HANDLING,
> - RTE_PORT_STOPPED)
> == 0)
> + if (port->port_status ==
> RTE_PORT_HANDLING)
> + port->port_status =
> RTE_PORT_STOPPED;
> + else
> fprintf(stderr,
> "Port %d can not be set back
> to stopped\n",
> pi);
> @@ -2917,16 +2918,18 @@ start_port(portid_t pid)
> pi, rte_strerror(-diag));
>
> /* Fail to setup rx queue, return */
> - if (rte_atomic16_cmpset(&(port->port_status),
> - RTE_PORT_HANDLING, RTE_PORT_STOPPED)
> == 0)
> + if (port->port_status == RTE_PORT_HANDLING)
> + port->port_status = RTE_PORT_STOPPED;
> + else
> fprintf(stderr,
> "Port %d can not be set back to
> stopped\n",
> pi);
> continue;
> }
>
> - if (rte_atomic16_cmpset(&(port->port_status),
> - RTE_PORT_HANDLING, RTE_PORT_STARTED) == 0)
> + if (port->port_status == RTE_PORT_HANDLING)
> + port->port_status = RTE_PORT_STARTED;
> + else
> fprintf(stderr, "Port %d can not be set into started\n",
> pi);
>
> @@ -3028,8 +3031,9 @@ stop_port(portid_t pid)
> }
>
> port = &ports[pi];
> - if (rte_atomic16_cmpset(&(port->port_status),
> RTE_PORT_STARTED,
> - RTE_PORT_HANDLING) == 0)
> + if (port->port_status == RTE_PORT_STARTED)
> + port->port_status = RTE_PORT_HANDLING;
> + else
> continue;
>
> if (hairpin_mode & 0xf) {
> @@ -3055,8 +3059,9 @@ stop_port(portid_t pid)
> RTE_LOG(ERR, EAL, "rte_eth_dev_stop failed for port
> %u\n",
> pi);
>
> - if (rte_atomic16_cmpset(&(port->port_status),
> - RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
> + if (port->port_status == RTE_PORT_HANDLING)
> + port->port_status = RTE_PORT_STOPPED;
> + else
> fprintf(stderr, "Port %d can not be set into
> stopped\n",
> pi);
> need_check_link_status = 1;
> @@ -3119,8 +3124,7 @@ close_port(portid_t pid)
> }
>
> port = &ports[pi];
> - if (rte_atomic16_cmpset(&(port->port_status),
> - RTE_PORT_CLOSED, RTE_PORT_CLOSED) == 1) {
> + if (port->port_status == RTE_PORT_CLOSED) {
> fprintf(stderr, "Port %d is already closed\n", pi);
> continue;
> }
> --
> 2.25.1
next prev parent reply other threads:[~2021-11-16 21:34 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-16 9:41 [PATCH v2 00/12] use compiler atomic builtins for app modules Joyce Kong
2021-11-16 9:41 ` [PATCH v2 01/12] test/pmd_perf: use compiler atomic builtins for polling sync Joyce Kong
2021-11-16 21:30 ` Honnappa Nagarahalli
2021-11-16 9:41 ` [PATCH v2 02/12] test/ring_perf: use compiler atomic builtins for lcores sync Joyce Kong
2021-11-16 9:41 ` [PATCH v2 03/12] test/timer: use compiler atomic builtins for sync Joyce Kong
2021-11-16 19:52 ` Honnappa Nagarahalli
2021-11-16 20:20 ` David Marchand
2021-11-16 21:21 ` Honnappa Nagarahalli
2021-11-17 9:29 ` David Marchand
2021-11-16 9:41 ` [PATCH v2 04/12] test/stack_perf: use compiler atomics for lcore sync Joyce Kong
2021-11-16 9:41 ` [PATCH v2 05/12] test/bpf: use compiler atomics for calculation Joyce Kong
2021-11-16 9:41 ` [PATCH v2 06/12] test/func_reentrancy: use compiler atomics for data sync Joyce Kong
2021-11-16 9:42 ` [PATCH v2 07/12] app/eventdev: use compiler atomics for shared " Joyce Kong
2021-11-16 9:42 ` [PATCH v2 08/12] app/crypto: use compiler atomic builtins for display sync Joyce Kong
2021-11-16 9:42 ` [PATCH v2 09/12] app/compress: " Joyce Kong
2021-11-16 20:15 ` Honnappa Nagarahalli
2021-11-16 9:42 ` [PATCH v2 10/12] app/testpmd: remove atomic operations for port status Joyce Kong
2021-11-16 21:34 ` Honnappa Nagarahalli [this message]
2021-11-16 9:42 ` [PATCH v2 11/12] app/bbdev: use compiler atomics for shared data sync Joyce Kong
2021-11-16 9:42 ` [PATCH v2 12/12] app: remove unnecessary include of atomic header file Joyce Kong
2021-11-16 20:23 ` David Marchand
2021-11-17 7:05 ` Joyce Kong
2021-11-17 8:21 ` [PATCH v3 00/12] use compiler atomic builtins for app modules Joyce Kong
2021-11-17 8:21 ` [PATCH v3 01/12] test/pmd_perf: use compiler atomic builtins for polling sync Joyce Kong
2021-11-17 8:21 ` [PATCH v3 02/12] test/ring_perf: use compiler atomic builtins for lcores sync Joyce Kong
2021-11-17 8:21 ` [PATCH v3 03/12] test/timer: use compiler atomic builtins for sync Joyce Kong
2021-11-17 8:21 ` [PATCH v3 04/12] test/stack_perf: use compiler atomics for lcore sync Joyce Kong
2021-11-17 8:21 ` [PATCH v3 05/12] test/bpf: use compiler atomics for calculation Joyce Kong
2021-11-17 8:21 ` [PATCH v3 06/12] test/func_reentrancy: use compiler atomics for data sync Joyce Kong
2021-11-17 8:21 ` [PATCH v3 07/12] app/eventdev: use compiler atomics for shared " Joyce Kong
2021-11-17 8:21 ` [PATCH v3 08/12] app/crypto: use compiler atomic builtins for display sync Joyce Kong
2021-11-17 8:21 ` [PATCH v3 09/12] app/compress: " Joyce Kong
2021-11-17 8:21 ` [PATCH v3 10/12] app/testpmd: remove atomic operations for port status Joyce Kong
2021-11-17 8:21 ` [PATCH v3 11/12] app/bbdev: use compiler atomics for shared data sync Joyce Kong
2021-11-17 8:22 ` [PATCH v3 12/12] app: remove unnecessary include of atomic header file Joyce Kong
2021-11-17 10:02 ` [PATCH v3 00/12] use compiler atomic builtins for app modules David Marchand
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