Currently the code enqueue work items using {queue|mod}_delayed_work(), using system_long_wq. This workqueue should be used when long works are expected and it is a per-cpu workqueue. The function(s) end up calling __queue_delayed_work(), which set a global timer that could fire anywhere, enqueuing the work where the timer fired. Unbound works could benefit from scheduler task placement, to optimize performance and power consumption. Long work shouldn't stick to a single CPU. Recently, a new unbound workqueue specific for long running work has been added:     c116737e972e ("workqueue: Add system_dfl_long_wq for long unbound works") Since the workqueue work doesn't rely on per-cpu variables, there is no obvious reason that justify the use of a per-cpu workqueue. So change system_long_wq with system_dfl_long_wq so that the work may benefit from scheduler task placement. Cc: Haren Myneni Cc: Rick Lindsley Cc: Nick Child Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy (CS GROUP) Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Marco Crivellari --- drivers/net/ethernet/ibm/ibmvnic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 5a510eed335e..a1c01c9820d2 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -3229,7 +3229,7 @@ static void __ibmvnic_reset(struct work_struct *work) if (adapter->state == VNIC_PROBING && !wait_for_completion_timeout(&adapter->probe_done, timeout)) { dev_err(dev, "Reset thread timed out on probe"); - queue_delayed_work(system_long_wq, + queue_delayed_work(system_dfl_long_wq, &adapter->ibmvnic_delayed_reset, IBMVNIC_RESET_DELAY); return; @@ -3267,7 +3267,7 @@ static void __ibmvnic_reset(struct work_struct *work) spin_lock(&adapter->rwi_lock); if (!list_empty(&adapter->rwi_list)) { if (test_and_set_bit_lock(0, &adapter->resetting)) { - queue_delayed_work(system_long_wq, + queue_delayed_work(system_dfl_long_wq, &adapter->ibmvnic_delayed_reset, IBMVNIC_RESET_DELAY); } else { -- 2.54.0 Currently the code enqueue work items using {queue|mod}_delayed_work(), using system_long_wq. This workqueue should be used when long works are expected and it is a per-cpu workqueue. The function(s) end up calling __queue_delayed_work(), which set a global timer that could fire anywhere, enqueuing the work where the timer fired. Unbound works could benefit from scheduler task placement, to optimize performance and power consumption. Long work shouldn't stick to a single CPU. Recently, a new unbound workqueue specific for long running work has been added:     c116737e972e ("workqueue: Add system_dfl_long_wq for long unbound works") Since the workqueue work doesn't rely on per-cpu variables, there is no obvious reason that justify the use of a per-cpu workqueue. So change system_long_wq with system_dfl_long_wq so that the work may benefit from scheduler task placement. Cc: MD Danish Anwar Cc: Roger Quadros Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Marco Crivellari --- drivers/net/ethernet/ti/icssg/icssg_stats.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.c b/drivers/net/ethernet/ti/icssg/icssg_stats.c index 7159baa0155c..7d6d6692d819 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_stats.c +++ b/drivers/net/ethernet/ti/icssg/icssg_stats.c @@ -69,7 +69,7 @@ void icssg_stats_work_handler(struct work_struct *work) stats_work.work); emac_update_hardware_stats(emac); - queue_delayed_work(system_long_wq, &emac->stats_work, + queue_delayed_work(system_dfl_long_wq, &emac->stats_work, msecs_to_jiffies((STATS_TIME_LIMIT_1G_MS * 1000) / emac->speed)); } EXPORT_SYMBOL_GPL(icssg_stats_work_handler); -- 2.54.0 Currently the code enqueue work items using {queue|mod}_delayed_work(), using system_long_wq. This workqueue should be used when long works are expected and it is a per-cpu workqueue. The function(s) end up calling __queue_delayed_work(), which set a global timer that could fire anywhere, enqueuing the work where the timer fired. Unbound works could benefit from scheduler task placement, to optimize performance and power consumption. Long work shouldn't stick to a single CPU. Recently, a new unbound workqueue specific for long running work has been added:     c116737e972e ("workqueue: Add system_dfl_long_wq for long unbound works") Since the workqueue work doesn't rely on per-cpu variables, there is no obvious reason that justify the use of a per-cpu workqueue. So change system_long_wq with system_dfl_long_wq so that the work may benefit from scheduler task placement. Cc: Mika Westerberg Cc: Yehezkel Bernat Signed-off-by: Marco Crivellari --- drivers/net/thunderbolt/main.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/thunderbolt/main.c b/drivers/net/thunderbolt/main.c index 7aae5d915a1e..f365ef642b62 100644 --- a/drivers/net/thunderbolt/main.c +++ b/drivers/net/thunderbolt/main.c @@ -315,7 +315,7 @@ static void start_login(struct tbnet *net) net->login_received = false; mutex_unlock(&net->connection_lock); - queue_delayed_work(system_long_wq, &net->login_work, + queue_delayed_work(system_dfl_long_wq, &net->login_work, msecs_to_jiffies(1000)); } @@ -464,7 +464,7 @@ static int tbnet_handle_packet(const void *buf, size_t size, void *data) if (net->login_retries >= TBNET_LOGIN_RETRIES || !net->login_sent) { net->login_retries = 0; - queue_delayed_work(system_long_wq, + queue_delayed_work(system_dfl_long_wq, &net->login_work, 0); } mutex_unlock(&net->connection_lock); @@ -704,7 +704,8 @@ static void tbnet_login_work(struct work_struct *work) netdev_dbg(net->dev, "sending login request failed, ret=%d\n", ret); if (net->login_retries++ < TBNET_LOGIN_RETRIES) { - queue_delayed_work(system_long_wq, &net->login_work, + queue_delayed_work(system_dfl_long_wq, + &net->login_work, delay); } else { netdev_info(net->dev, "ThunderboltIP login timed out\n"); -- 2.54.0 Currently the code enqueue work items using {queue|mod}_delayed_work(), using system_long_wq. This workqueue should be used when long works are expected and it is a per-cpu workqueue. The function(s) end up calling __queue_delayed_work(), which set a global timer that could fire anywhere, enqueuing the work where the timer fired. Unbound works could benefit from scheduler task placement, to optimize performance and power consumption. Long work shouldn't stick to a single CPU. Recently, a new unbound workqueue specific for long running work has been added:     c116737e972e ("workqueue: Add system_dfl_long_wq for long unbound works") Since the workqueue work doesn't rely on per-cpu variables, there is no obvious reason that justify the use of a per-cpu workqueue. So change system_long_wq with system_dfl_long_wq so that the work may benefit from scheduler task placement. Cc: Petko Manolov Cc: linux-usb@vger.kernel.org Signed-off-by: Marco Crivellari --- drivers/net/usb/pegasus.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c index db85f40734d7..f26bf54e606c 100644 --- a/drivers/net/usb/pegasus.c +++ b/drivers/net/usb/pegasus.c @@ -1126,8 +1126,9 @@ static void check_carrier(struct work_struct *work) pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); set_carrier(pegasus->net); if (!(pegasus->flags & PEGASUS_UNPLUG)) { - queue_delayed_work(system_long_wq, &pegasus->carrier_check, - CARRIER_CHECK_DELAY); + queue_delayed_work(system_dfl_long_wq, + &pegasus->carrier_check, + CARRIER_CHECK_DELAY); } } @@ -1232,7 +1233,7 @@ static int pegasus_probe(struct usb_interface *intf, res = register_netdev(net); if (res) goto out3; - queue_delayed_work(system_long_wq, &pegasus->carrier_check, + queue_delayed_work(system_dfl_long_wq, &pegasus->carrier_check, CARRIER_CHECK_DELAY); dev_info(&intf->dev, "%s, %s, %pM\n", net->name, usb_dev_id[dev_index].name, net->dev_addr); @@ -1297,7 +1298,7 @@ static int pegasus_resume(struct usb_interface *intf) pegasus->intr_urb->actual_length = 0; intr_callback(pegasus->intr_urb); } - queue_delayed_work(system_long_wq, &pegasus->carrier_check, + queue_delayed_work(system_dfl_long_wq, &pegasus->carrier_check, CARRIER_CHECK_DELAY); return 0; } -- 2.54.0 Currently the code enqueue work items using {queue|mod}_delayed_work(), using system_long_wq. This workqueue should be used when long works are expected and it is a per-cpu workqueue. The function(s) end up calling __queue_delayed_work(), which set a global timer that could fire anywhere, enqueuing the work where the timer fired. Unbound works could benefit from scheduler task placement, to optimize performance and power consumption. Long work shouldn't stick to a single CPU. Recently, a new unbound workqueue specific for long running work has been added:     c116737e972e ("workqueue: Add system_dfl_long_wq for long unbound works") Since the workqueue work doesn't rely on per-cpu variables, there is no obvious reason that justify the use of a per-cpu workqueue. So change system_long_wq with system_dfl_long_wq so that the work may benefit from scheduler task placement. Cc: Ethan Nelson-Moore Cc: linux-usb@vger.kernel.org Signed-off-by: Marco Crivellari --- drivers/net/usb/r8152.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 1ace1d2398c9..16c521e3fe0a 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -7050,7 +7050,8 @@ static void rtl_hw_phy_work_func_t(struct work_struct *work) /* Delay execution in case request_firmware() is not ready yet. */ - queue_delayed_work(system_long_wq, &tp->hw_phy_work, HZ * 10); + queue_delayed_work(system_dfl_long_wq, &tp->hw_phy_work, + HZ * 10); goto ignore_once; } @@ -8620,7 +8621,7 @@ static int rtl8152_reset_resume(struct usb_interface *intf) clear_bit(SELECTIVE_SUSPEND, &tp->flags); rtl_reset_ocp_base(tp); tp->rtl_ops.init(tp); - queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0); + queue_delayed_work(system_dfl_long_wq, &tp->hw_phy_work, 0); set_ethernet_addr(tp, true); return rtl8152_resume(intf); } @@ -10001,7 +10002,7 @@ static int rtl8152_probe_once(struct usb_interface *intf, /* Retry in case request_firmware() is not ready yet. */ tp->rtl_fw.retry = true; #endif - queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0); + queue_delayed_work(system_dfl_long_wq, &tp->hw_phy_work, 0); set_ethernet_addr(tp, false); usb_set_intfdata(intf, tp); -- 2.54.0