Module Name: src
Committed By: yamaguchi
Date: Thu Mar 31 06:20:14 UTC 2022
Modified Files:
src/sys/dev/pci: if_ixl.c
Log Message:
ixl(4): remove unnecessary lock acquirement
Running interrupt handlers is finished while accessing to
I40E_Q[TR]X_ENA register. Therefore, it is not need to acquire
locks to wait for the finish.
pointed out by [email protected], thanks.
To generate a diff of this commit:
cvs rdiff -u -r1.79 -r1.80 src/sys/dev/pci/if_ixl.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/pci/if_ixl.c
diff -u src/sys/dev/pci/if_ixl.c:1.79 src/sys/dev/pci/if_ixl.c:1.80
--- src/sys/dev/pci/if_ixl.c:1.79 Thu Mar 24 08:54:16 2022
+++ src/sys/dev/pci/if_ixl.c Thu Mar 31 06:20:14 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: if_ixl.c,v 1.79 2022/03/24 08:54:16 yamaguchi Exp $ */
+/* $NetBSD: if_ixl.c,v 1.80 2022/03/31 06:20:14 yamaguchi Exp $ */
/*
* Copyright (c) 2013-2015, Intel Corporation
@@ -74,7 +74,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ixl.c,v 1.79 2022/03/24 08:54:16 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ixl.c,v 1.80 2022/03/31 06:20:14 yamaguchi Exp $");
#ifdef _KERNEL_OPT
#include "opt_net_mpsafe.h"
@@ -2156,29 +2156,6 @@ ixl_iff(struct ixl_softc *sc)
}
static void
-ixl_stop_rendezvous(struct ixl_softc *sc)
-{
- struct ixl_tx_ring *txr;
- struct ixl_rx_ring *rxr;
- unsigned int i;
-
- for (i = 0; i < sc->sc_nqueue_pairs; i++) {
- txr = sc->sc_qps[i].qp_txr;
- rxr = sc->sc_qps[i].qp_rxr;
-
- mutex_enter(&txr->txr_lock);
- mutex_exit(&txr->txr_lock);
-
- mutex_enter(&rxr->rxr_lock);
- mutex_exit(&rxr->rxr_lock);
-
- sc->sc_qps[i].qp_workqueue = false;
- workqueue_wait(sc->sc_workq_txrx,
- &sc->sc_qps[i].qp_work);
- }
-}
-
-static void
ixl_stop_locked(struct ixl_softc *sc)
{
struct ifnet *ifp = &sc->sc_ec.ec_if;
@@ -2247,7 +2224,11 @@ ixl_stop_locked(struct ixl_softc *sc)
mutex_exit(&rxr->rxr_lock);
}
- ixl_stop_rendezvous(sc);
+ for (i = 0; i < sc->sc_nqueue_pairs; i++) {
+ sc->sc_qps[i].qp_workqueue = false;
+ workqueue_wait(sc->sc_workq_txrx,
+ &sc->sc_qps[i].qp_work);
+ }
for (i = 0; i < sc->sc_nqueue_pairs; i++) {
txr = sc->sc_qps[i].qp_txr;
