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([2001:569:766d:6500:fb4e:6cf3:3ec6:9292]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-716c950d71asm371308a12.62.2024.06.20.22.05.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Jun 2024 22:05:48 -0700 (PDT) From: Allen Pais To: kuba@kernel.org, "David S. Miller" , Eric Dumazet , Paolo Abeni Cc: jes@trained-monkey.org, kda@linux-powerpc.org, cai.huoqing@linux.dev, dougmill@linux.ibm.com, npiggin@gmail.com, christophe.leroy@csgroup.eu, aneesh.kumar@kernel.org, naveen.n.rao@linux.ibm.com, nnac123@linux.ibm.com, tlfalcon@linux.ibm.com, cooldavid@cooldavid.org, marcin.s.wojtas@gmail.com, mlindner@marvell.com, stephen@networkplumber.org, nbd@nbd.name, sean.wang@mediatek.com, Mark-MC.Lee@mediatek.com, lorenzo@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, borisp@nvidia.com, bryan.whitehead@microchip.com, UNGLinuxDriver@microchip.com, louis.peens@corigine.com, richardcochran@gmail.com, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acenic@sunsite.dk, linux-net-drivers@amd.com, Allen Pais , netdev@vger.kernel.org Subject: [PATCH 05/15] net: cavium/liquidio: Convert tasklet API to new bottom half workqueue mechanism Date: Thu, 20 Jun 2024 22:05:15 -0700 Message-Id: <20240621050525.3720069-6-allen.lkml@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240621050525.3720069-1-allen.lkml@gmail.com> References: <20240621050525.3720069-1-allen.lkml@gmail.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Migrate tasklet APIs to the new bottom half workqueue mechanism. It replaces all occurrences of tasklet usage with the appropriate workqueue APIs throughout the cavium/liquidio driver. This transition ensures compatibility with the latest design and enhances performance. Signed-off-by: Allen Pais Reviewed-by: Sunil Goutham --- .../net/ethernet/cavium/liquidio/lio_core.c | 4 ++-- .../net/ethernet/cavium/liquidio/lio_main.c | 24 +++++++++---------- .../ethernet/cavium/liquidio/lio_vf_main.c | 10 ++++---- .../ethernet/cavium/liquidio/octeon_droq.c | 4 ++-- .../ethernet/cavium/liquidio/octeon_main.h | 4 ++-- 5 files changed, 23 insertions(+), 23 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c b/drivers/net/ethernet/cavium/liquidio/lio_core.c index 674c54831875..37307e02a6ff 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_core.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c @@ -925,7 +925,7 @@ int liquidio_schedule_msix_droq_pkt_handler(struct octeon_droq *droq, u64 ret) if (OCTEON_CN23XX_VF(oct)) dev_err(&oct->pci_dev->dev, "should not come here should not get rx when poll mode = 0 for vf\n"); - tasklet_schedule(&oct_priv->droq_tasklet); + queue_work(system_bh_wq, &oct_priv->droq_bh_work); return 1; } /* this will be flushed periodically by check iq db */ @@ -975,7 +975,7 @@ static void liquidio_schedule_droq_pkt_handlers(struct octeon_device *oct) droq->ops.napi_fn(droq); oct_priv->napi_mask |= BIT_ULL(oq_no); } else { - tasklet_schedule(&oct_priv->droq_tasklet); + queue_work(system_bh_wq, &oct_priv->droq_bh_work); } } } diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c index 1d79f6eaa41f..d348656c2f38 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c @@ -150,12 +150,12 @@ static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx, static struct handshake handshake[MAX_OCTEON_DEVICES]; static struct completion first_stage; -static void octeon_droq_bh(struct tasklet_struct *t) +static void octeon_droq_bh(struct work_struct *work) { int q_no; int reschedule = 0; - struct octeon_device_priv *oct_priv = from_tasklet(oct_priv, t, - droq_tasklet); + struct octeon_device_priv *oct_priv = from_work(oct_priv, work, + droq_bh_work); struct octeon_device *oct = oct_priv->dev; for (q_no = 0; q_no < MAX_OCTEON_OUTPUT_QUEUES(oct); q_no++) { @@ -180,7 +180,7 @@ static void octeon_droq_bh(struct tasklet_struct *t) } if (reschedule) - tasklet_schedule(&oct_priv->droq_tasklet); + queue_work(system_bh_wq, &oct_priv->droq_bh_work); } static int lio_wait_for_oq_pkts(struct octeon_device *oct) @@ -199,7 +199,7 @@ static int lio_wait_for_oq_pkts(struct octeon_device *oct) } if (pkt_cnt > 0) { pending_pkts += pkt_cnt; - tasklet_schedule(&oct_priv->droq_tasklet); + queue_work(system_bh_wq, &oct_priv->droq_bh_work); } pkt_cnt = 0; schedule_timeout_uninterruptible(1); @@ -1130,7 +1130,7 @@ static void octeon_destroy_resources(struct octeon_device *oct) break; } /* end switch (oct->status) */ - tasklet_kill(&oct_priv->droq_tasklet); + cancel_work_sync(&oct_priv->droq_bh_work); } /** @@ -1234,7 +1234,7 @@ static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx) list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) netif_napi_del(napi); - tasklet_enable(&oct_priv->droq_tasklet); + enable_and_queue_work(system_bh_wq, &oct_priv->droq_bh_work); if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED) unregister_netdev(netdev); @@ -1770,7 +1770,7 @@ static int liquidio_open(struct net_device *netdev) int ret = 0; if (oct->props[lio->ifidx].napi_enabled == 0) { - tasklet_disable(&oct_priv->droq_tasklet); + disable_work_sync(&oct_priv->droq_bh_work); list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) napi_enable(napi); @@ -1896,7 +1896,7 @@ static int liquidio_stop(struct net_device *netdev) if (OCTEON_CN23XX_PF(oct)) oct->droq[0]->ops.poll_mode = 0; - tasklet_enable(&oct_priv->droq_tasklet); + enable_and_queue_work(system_bh_wq, &oct_priv->droq_bh_work); } dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name); @@ -4204,9 +4204,9 @@ static int octeon_device_init(struct octeon_device *octeon_dev) } } - /* Initialize the tasklet that handles output queue packet processing.*/ - dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq tasklet\n"); - tasklet_setup(&oct_priv->droq_tasklet, octeon_droq_bh); + /* Initialize the bh work that handles output queue packet processing.*/ + dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq bh work\n"); + INIT_WORK(&oct_priv->droq_bh_work, octeon_droq_bh); /* Setup the interrupt handler and record the INT SUM register address */ diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c index 62c2eadc33e3..04117625f388 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c @@ -87,7 +87,7 @@ static int lio_wait_for_oq_pkts(struct octeon_device *oct) } if (pkt_cnt > 0) { pending_pkts += pkt_cnt; - tasklet_schedule(&oct_priv->droq_tasklet); + queue_work(system_bh_wq, &oct_priv->droq_bh_work); } pkt_cnt = 0; schedule_timeout_uninterruptible(1); @@ -584,7 +584,7 @@ static void octeon_destroy_resources(struct octeon_device *oct) break; } - tasklet_kill(&oct_priv->droq_tasklet); + cancel_work_sync(&oct_priv->droq_bh_work); } /** @@ -687,7 +687,7 @@ static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx) list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) netif_napi_del(napi); - tasklet_enable(&oct_priv->droq_tasklet); + enable_and_queue_work(system_bh_wq, &oct_priv->droq_bh_work); if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED) unregister_netdev(netdev); @@ -911,7 +911,7 @@ static int liquidio_open(struct net_device *netdev) int ret = 0; if (!oct->props[lio->ifidx].napi_enabled) { - tasklet_disable(&oct_priv->droq_tasklet); + disable_work_sync(&oct_priv->droq_bh_work); list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) napi_enable(napi); @@ -986,7 +986,7 @@ static int liquidio_stop(struct net_device *netdev) oct->droq[0]->ops.poll_mode = 0; - tasklet_enable(&oct_priv->droq_tasklet); + enable_and_queue_work(system_bh_wq, &oct_priv->droq_bh_work); } cancel_delayed_work_sync(&lio->stats_wk.work); diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c index eef12fdd246d..4e5f8bbc891b 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c @@ -96,7 +96,7 @@ u32 octeon_droq_check_hw_for_pkts(struct octeon_droq *droq) last_count = pkt_count - droq->pkt_count; droq->pkt_count = pkt_count; - /* we shall write to cnts at napi irq enable or end of droq tasklet */ + /* we shall write to cnts at napi irq enable or end of droq bh_work */ if (last_count) atomic_add(last_count, &droq->pkts_pending); @@ -764,7 +764,7 @@ octeon_droq_process_packets(struct octeon_device *oct, (u16)rdisp->rinfo->recv_pkt->rh.r.subcode)); } - /* If there are packets pending. schedule tasklet again */ + /* If there are packets pending. schedule bh_work again */ if (atomic_read(&droq->pkts_pending)) return 1; diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_main.h b/drivers/net/ethernet/cavium/liquidio/octeon_main.h index 5b4cb725f60f..a8f2a0a7b08e 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_main.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_main.h @@ -24,6 +24,7 @@ #define _OCTEON_MAIN_H_ #include +#include #if BITS_PER_LONG == 32 #define CVM_CAST64(v) ((long long)(v)) @@ -36,8 +37,7 @@ #define DRV_NAME "LiquidIO" struct octeon_device_priv { - /** Tasklet structures for this device. */ - struct tasklet_struct droq_tasklet; + struct work_struct droq_bh_work; unsigned long napi_mask; struct octeon_device *dev; };