From: Michal Schmidt <mschmidt@redhat.com>
To: intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
Karol Kolacinski <karol.kolacinski@intel.com>,
Tony Nguyen <anthony.l.nguyen@intel.com>,
Simon Horman <simon.horman@corigine.com>,
Michal Michalik <michal.michalik@intel.com>,
Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>,
Petr Oros <poros@redhat.com>, Andrew Lunn <andrew@lunn.ch>
Subject: [PATCH net-next v2 6/6] ice: sleep, don't busy-wait, in the SQ send retry loop
Date: Wed, 12 Apr 2023 10:19:29 +0200 [thread overview]
Message-ID: <20230412081929.173220-7-mschmidt@redhat.com> (raw)
In-Reply-To: <20230412081929.173220-1-mschmidt@redhat.com>
10 ms is a lot of time to spend busy-waiting. Sleeping is clearly
allowed here, because we have just returned from ice_sq_send_cmd(),
which takes a mutex.
On kernels with HZ=100, this msleep may be twice as long, but I don't
think it matters.
I did not actually observe any retries happening here.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
---
drivers/net/ethernet/intel/ice/ice_common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index c6200564304e..0157f6e98d3e 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1643,7 +1643,7 @@ ice_sq_send_cmd_retry(struct ice_hw *hw, struct ice_ctl_q_info *cq,
memcpy(desc, &desc_cpy, sizeof(desc_cpy));
- mdelay(ICE_SQ_SEND_DELAY_TIME_MS);
+ msleep(ICE_SQ_SEND_DELAY_TIME_MS);
} while (++idx < ICE_SQ_SEND_MAX_EXECUTE);
--
2.39.2
next prev parent reply other threads:[~2023-04-12 8:21 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-12 8:19 [PATCH net-next v2 0/6] ice: lower CPU usage with GNSS Michal Schmidt
2023-04-12 8:19 ` [PATCH net-next v2 1/6] ice: do not busy-wait to read GNSS data Michal Schmidt
2023-04-14 17:29 ` Kubalewski, Arkadiusz
2023-04-17 11:58 ` Simon Horman
2023-04-20 20:59 ` [Intel-wired-lan] " Mekala, SunithaX D
2023-04-12 8:19 ` [PATCH net-next v2 2/6] ice: increase the GNSS data polling interval to 20 ms Michal Schmidt
2023-04-14 17:28 ` Kubalewski, Arkadiusz
2023-04-17 11:58 ` Simon Horman
2023-04-20 20:59 ` [Intel-wired-lan] " Mekala, SunithaX D
2023-04-12 8:19 ` [PATCH net-next v2 3/6] ice: remove ice_ctl_q_info::sq_cmd_timeout Michal Schmidt
2023-04-14 17:29 ` Kubalewski, Arkadiusz
2023-04-17 11:52 ` Simon Horman
2023-04-20 20:59 ` [Intel-wired-lan] " Mekala, SunithaX D
2023-04-12 8:19 ` [PATCH net-next v2 4/6] ice: sleep, don't busy-wait, for ICE_CTL_Q_SQ_CMD_TIMEOUT Michal Schmidt
2023-04-14 17:29 ` Kubalewski, Arkadiusz
2023-04-17 12:01 ` Simon Horman
2023-04-20 21:07 ` [Intel-wired-lan] " Mekala, SunithaX D
2023-04-12 8:19 ` [PATCH net-next v2 5/6] ice: remove unused buffer copy code in ice_sq_send_cmd_retry() Michal Schmidt
2023-04-14 17:29 ` Kubalewski, Arkadiusz
2023-04-17 12:02 ` Simon Horman
2023-04-20 20:59 ` [Intel-wired-lan] " Mekala, SunithaX D
2023-04-12 8:19 ` Michal Schmidt [this message]
2023-04-14 17:29 ` [PATCH net-next v2 6/6] ice: sleep, don't busy-wait, in the SQ send retry loop Kubalewski, Arkadiusz
2023-04-17 12:03 ` Simon Horman
2023-04-20 20:59 ` [Intel-wired-lan] " Mekala, SunithaX D
2023-04-14 17:29 ` [PATCH net-next v2 0/6] ice: lower CPU usage with GNSS Kubalewski, Arkadiusz
2023-04-20 20:59 ` [Intel-wired-lan] " Mekala, SunithaX D
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