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Message-ID: <20250503082834.49413-1-marco.crivellari@suse.com> Date: Sat, 3 May 2025 10:28:30 +0200 From: Marco Crivellari <marco.crivellari@...e.com> To: linux-kernel@...r.kernel.org Cc: Tejun Heo <tj@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>, Thomas Gleixner <tglx@...utronix.de>, Frederic Weisbecker <frederic@...nel.org>, Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Marco Crivellari <marco.crivellari@...e.com> Subject: [PATCH 0/4] Workqueue: rename system workqueue and add WQ_PERCPU Hi! This series is the follow up of the discussion from: "workqueue: Always use wq_select_unbound_cpu() for WORK_CPU_UNBOUND." https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/ 1) [P 1-2] system workqueue rename: system_wq is a per-CPU workqueue, but his name is not clear. system_unbound_wq is to be used when locality is not required. system_wq renamed in system_percpu_wq, while system_unbound_wq became system_dfl_wq. 2) [P 3] Introduction of WQ_PERCPU. This patch adds a new WQ_PERCPU flag to explicitly request the legacy per-CPU behavior. WQ_UNBOUND will be removed once the migration is complete. Every alloc_workqueue() caller should use one among WQ_PERCPU or WQ_UNBOUND. This is actually enforced warning if both or none of them are present at the same time. 3) [P 4] alloc_workqueue() callee should pass explicitly WQ_PERCPU. This patch ensures that every caller that needs per-cpu workqueue will explicitly require it, using the WQ_PERCPU flag. Marco Crivellari (4): Workqueue: rename system_wq to system_percpu_wq Workqueue: rename system_unbound_wq to system_dfl_wq Workqueue: add WQ_PERCPU Workqueue: add WQ_PERCPU to every alloc_workqueue user arch/s390/kernel/diag/diag324.c | 4 +- arch/s390/kernel/hiperdispatch.c | 2 +- block/bio-integrity-auto.c | 5 ++- block/bio.c | 3 +- block/blk-core.c | 3 +- block/blk-throttle.c | 3 +- block/blk-zoned.c | 3 +- crypto/cryptd.c | 3 +- drivers/accel/ivpu/ivpu_hw_btrs.c | 2 +- drivers/accel/ivpu/ivpu_ipc.c | 2 +- drivers/accel/ivpu/ivpu_job.c | 2 +- drivers/accel/ivpu/ivpu_mmu.c | 2 +- drivers/accel/ivpu/ivpu_pm.c | 4 +- drivers/acpi/ec.c | 3 +- drivers/acpi/osl.c | 6 +-- drivers/acpi/scan.c | 2 +- drivers/acpi/thermal.c | 3 +- drivers/ata/libata-sff.c | 3 +- drivers/base/core.c | 2 +- drivers/base/dd.c | 2 +- drivers/base/devcoredump.c | 2 +- drivers/block/aoe/aoemain.c | 2 +- drivers/block/nbd.c | 2 +- drivers/block/rbd.c | 2 +- drivers/block/rnbd/rnbd-clt.c | 2 +- drivers/block/sunvdc.c | 4 +- drivers/block/virtio_blk.c | 2 +- drivers/block/zram/zram_drv.c | 2 +- drivers/bus/mhi/ep/main.c | 2 +- drivers/char/random.c | 8 ++-- drivers/char/tpm/tpm-dev-common.c | 3 +- drivers/char/xillybus/xillybus_core.c | 2 +- drivers/char/xillybus/xillyusb.c | 4 +- drivers/cpufreq/tegra194-cpufreq.c | 3 +- drivers/crypto/atmel-i2c.c | 2 +- drivers/crypto/cavium/nitrox/nitrox_mbx.c | 2 +- drivers/crypto/intel/qat/qat_common/adf_aer.c | 4 +- drivers/crypto/intel/qat/qat_common/adf_isr.c | 3 +- .../crypto/intel/qat/qat_common/adf_sriov.c | 3 +- .../crypto/intel/qat/qat_common/adf_vf_isr.c | 3 +- drivers/cxl/pci.c | 2 +- drivers/extcon/extcon-intel-int3496.c | 4 +- drivers/firewire/core-transaction.c | 3 +- drivers/firewire/ohci.c | 3 +- drivers/gpio/gpiolib-cdev.c | 4 +- drivers/gpu/drm/amd/amdgpu/aldebaran.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 +-- drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c | 2 +- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 3 +- drivers/gpu/drm/bridge/analogix/anx7625.c | 3 +- drivers/gpu/drm/bridge/ite-it6505.c | 2 +- drivers/gpu/drm/bridge/ti-tfp410.c | 2 +- drivers/gpu/drm/drm_atomic_helper.c | 6 +-- drivers/gpu/drm/drm_probe_helper.c | 2 +- drivers/gpu/drm/drm_self_refresh_helper.c | 2 +- drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +- .../drm/i915/display/intel_display_driver.c | 3 +- .../drm/i915/display/intel_display_power.c | 2 +- drivers/gpu/drm/i915/display/intel_tc.c | 4 +- drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 2 +- drivers/gpu/drm/i915/gt/uc/intel_guc.c | 4 +- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 4 +- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 6 +-- drivers/gpu/drm/i915/i915_active.c | 2 +- drivers/gpu/drm/i915/i915_driver.c | 5 ++- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/i915_sw_fence_work.c | 2 +- drivers/gpu/drm/i915/i915_vma_resource.c | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp.c | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp_irq.c | 2 +- .../gpu/drm/i915/selftests/i915_sw_fence.c | 2 +- .../gpu/drm/i915/selftests/mock_gem_device.c | 2 +- drivers/gpu/drm/nouveau/dispnv50/disp.c | 2 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +- drivers/gpu/drm/nouveau/nouveau_sched.c | 3 +- drivers/gpu/drm/radeon/radeon_display.c | 3 +- .../gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 4 +- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 2 +- drivers/gpu/drm/scheduler/sched_main.c | 2 +- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 2 +- drivers/gpu/drm/vc4/vc4_hdmi.c | 4 +- drivers/gpu/drm/xe/xe_devcoredump.c | 2 +- drivers/gpu/drm/xe/xe_device.c | 4 +- drivers/gpu/drm/xe/xe_execlist.c | 2 +- drivers/gpu/drm/xe/xe_ggtt.c | 2 +- drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c | 6 +-- drivers/gpu/drm/xe/xe_guc_ct.c | 4 +- drivers/gpu/drm/xe/xe_hw_engine_group.c | 3 +- drivers/gpu/drm/xe/xe_oa.c | 2 +- drivers/gpu/drm/xe/xe_pt.c | 2 +- drivers/gpu/drm/xe/xe_sriov.c | 2 +- drivers/gpu/drm/xe/xe_vm.c | 4 +- drivers/greybus/operation.c | 2 +- drivers/hid/hid-nintendo.c | 3 +- drivers/hte/hte.c | 2 +- drivers/hv/mshv_eventfd.c | 2 +- drivers/i3c/master.c | 2 +- drivers/iio/adc/pac1934.c | 2 +- drivers/infiniband/core/cm.c | 2 +- drivers/infiniband/core/device.c | 4 +- drivers/infiniband/core/ucma.c | 2 +- drivers/infiniband/hw/hfi1/init.c | 3 +- drivers/infiniband/hw/hfi1/opfn.c | 3 +- drivers/infiniband/hw/mlx4/cm.c | 2 +- drivers/infiniband/hw/mlx5/odp.c | 4 +- drivers/infiniband/sw/rdmavt/cq.c | 3 +- drivers/infiniband/ulp/iser/iscsi_iser.c | 2 +- drivers/infiniband/ulp/isert/ib_isert.c | 2 +- drivers/infiniband/ulp/rtrs/rtrs-clt.c | 2 +- drivers/infiniband/ulp/rtrs/rtrs-srv.c | 2 +- drivers/input/keyboard/gpio_keys.c | 2 +- drivers/input/misc/palmas-pwrbutton.c | 2 +- drivers/input/mouse/psmouse-smbus.c | 2 +- drivers/input/mouse/synaptics_i2c.c | 8 ++-- drivers/isdn/capi/kcapi.c | 2 +- drivers/leds/trigger/ledtrig-input-events.c | 2 +- drivers/md/bcache/btree.c | 3 +- drivers/md/bcache/super.c | 30 +++++++------ drivers/md/bcache/writeback.c | 2 +- drivers/md/dm-bufio.c | 3 +- drivers/md/dm-cache-target.c | 3 +- drivers/md/dm-clone-target.c | 3 +- drivers/md/dm-crypt.c | 6 ++- drivers/md/dm-delay.c | 4 +- drivers/md/dm-integrity.c | 15 ++++--- drivers/md/dm-kcopyd.c | 3 +- drivers/md/dm-log-userspace-base.c | 3 +- drivers/md/dm-mpath.c | 5 ++- drivers/md/dm-raid1.c | 5 ++- drivers/md/dm-snap-persistent.c | 3 +- drivers/md/dm-stripe.c | 2 +- drivers/md/dm-verity-target.c | 4 +- drivers/md/dm-writecache.c | 3 +- drivers/md/dm.c | 3 +- drivers/md/md.c | 4 +- drivers/media/pci/ddbridge/ddbridge-core.c | 2 +- .../platform/mediatek/mdp3/mtk-mdp3-core.c | 6 ++- .../platform/synopsys/hdmirx/snps_hdmirx.c | 8 ++-- drivers/message/fusion/mptbase.c | 7 ++- drivers/mmc/core/block.c | 3 +- drivers/mmc/host/mtk-sd.c | 4 +- drivers/mmc/host/omap.c | 2 +- drivers/mmc/host/sdhci.c | 2 +- drivers/net/can/spi/hi311x.c | 3 +- drivers/net/can/spi/mcp251x.c | 3 +- .../net/ethernet/cavium/liquidio/lio_core.c | 2 +- .../net/ethernet/cavium/liquidio/lio_main.c | 8 ++-- .../ethernet/cavium/liquidio/lio_vf_main.c | 3 +- .../cavium/liquidio/request_manager.c | 2 +- .../cavium/liquidio/response_manager.c | 3 +- .../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +- .../hisilicon/hns3/hns3pf/hclge_main.c | 3 +- drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 2 +- .../net/ethernet/marvell/octeontx2/af/cgx.c | 2 +- .../marvell/octeontx2/af/mcs_rvu_if.c | 2 +- .../ethernet/marvell/octeontx2/af/rvu_cgx.c | 2 +- .../ethernet/marvell/octeontx2/af/rvu_rep.c | 2 +- .../marvell/octeontx2/nic/cn10k_ipsec.c | 3 +- .../ethernet/marvell/prestera/prestera_main.c | 2 +- .../ethernet/marvell/prestera/prestera_pci.c | 2 +- drivers/net/ethernet/mellanox/mlxsw/core.c | 4 +- drivers/net/ethernet/netronome/nfp/nfp_main.c | 2 +- drivers/net/ethernet/qlogic/qed/qed_main.c | 3 +- drivers/net/ethernet/sfc/efx_channels.c | 2 +- drivers/net/ethernet/sfc/siena/efx_channels.c | 2 +- drivers/net/ethernet/wiznet/w5100.c | 2 +- drivers/net/fjes/fjes_main.c | 5 ++- drivers/net/macvlan.c | 2 +- drivers/net/netdevsim/dev.c | 6 +-- drivers/net/phy/sfp.c | 12 ++--- drivers/net/wireguard/device.c | 6 ++- drivers/net/wireless/ath/ath6kl/usb.c | 2 +- drivers/net/wireless/intel/ipw2x00/ipw2100.c | 6 +-- drivers/net/wireless/intel/ipw2x00/ipw2200.c | 2 +- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 4 +- .../net/wireless/intel/iwlwifi/iwl-trans.h | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/tdls.c | 6 +-- .../net/wireless/marvell/libertas/if_sdio.c | 3 +- .../net/wireless/marvell/libertas/if_spi.c | 3 +- .../net/wireless/marvell/libertas_tf/main.c | 2 +- .../net/wireless/mediatek/mt76/mt7921/init.c | 2 +- .../net/wireless/mediatek/mt76/mt7925/init.c | 2 +- drivers/net/wireless/quantenna/qtnfmac/core.c | 3 +- drivers/net/wireless/realtek/rtlwifi/base.c | 2 +- drivers/net/wireless/realtek/rtw88/usb.c | 3 +- drivers/net/wireless/silabs/wfx/main.c | 2 +- drivers/net/wireless/st/cw1200/bh.c | 4 +- drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 3 +- drivers/net/wwan/wwan_hwsim.c | 2 +- drivers/nvdimm/security.c | 4 +- drivers/nvme/host/core.c | 8 ++-- drivers/nvme/host/tcp.c | 2 +- drivers/nvme/target/admin-cmd.c | 2 +- drivers/nvme/target/core.c | 5 ++- drivers/nvme/target/fabrics-cmd-auth.c | 2 +- drivers/nvme/target/fc.c | 6 +-- drivers/nvme/target/tcp.c | 2 +- drivers/pci/endpoint/functions/pci-epf-mhi.c | 2 +- drivers/pci/endpoint/functions/pci-epf-ntb.c | 5 ++- drivers/pci/endpoint/functions/pci-epf-test.c | 3 +- drivers/pci/endpoint/functions/pci-epf-vntb.c | 5 ++- drivers/pci/endpoint/pci-ep-cfs.c | 2 +- drivers/pci/hotplug/pnv_php.c | 3 +- drivers/pci/hotplug/shpchp_core.c | 3 +- drivers/phy/allwinner/phy-sun4i-usb.c | 14 +++--- .../platform/cznic/turris-omnia-mcu-gpio.c | 2 +- .../surface/aggregator/ssh_packet_layer.c | 2 +- .../surface/aggregator/ssh_request_layer.c | 2 +- .../platform/surface/surface_acpi_notify.c | 2 +- drivers/platform/x86/gpd-pocket-fan.c | 4 +- .../x86/x86-android-tablets/vexia_atla10_ec.c | 2 +- drivers/power/supply/ab8500_btemp.c | 3 +- drivers/power/supply/bq2415x_charger.c | 2 +- drivers/power/supply/bq24190_charger.c | 2 +- drivers/power/supply/bq27xxx_battery.c | 6 +-- drivers/power/supply/ipaq_micro_battery.c | 3 +- drivers/power/supply/rk817_charger.c | 6 +-- drivers/power/supply/ucs1002_power.c | 2 +- drivers/power/supply/ug3105_battery.c | 6 +-- drivers/rapidio/rio.c | 2 +- drivers/ras/cec.c | 2 +- drivers/regulator/irq_helpers.c | 2 +- drivers/regulator/qcom-labibb-regulator.c | 4 +- drivers/s390/char/tape_3590.c | 2 +- drivers/scsi/be2iscsi/be_main.c | 3 +- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 2 +- drivers/scsi/device_handler/scsi_dh_alua.c | 2 +- drivers/scsi/fcoe/fcoe.c | 2 +- drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 3 +- drivers/scsi/lpfc/lpfc_init.c | 2 +- drivers/scsi/pm8001/pm8001_init.c | 2 +- drivers/scsi/qedf/qedf_main.c | 15 ++++--- drivers/scsi/qedi/qedi_main.c | 2 +- drivers/scsi/qla2xxx/qla_os.c | 4 +- drivers/scsi/qla2xxx/qla_target.c | 2 +- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 2 +- drivers/scsi/qla4xxx/ql4_os.c | 3 +- drivers/scsi/scsi_transport_fc.c | 7 +-- drivers/scsi/scsi_transport_iscsi.c | 2 +- drivers/soc/fsl/qbman/qman.c | 2 +- drivers/soc/xilinx/zynqmp_power.c | 6 +-- drivers/staging/greybus/sdio.c | 2 +- drivers/target/sbp/sbp_target.c | 8 ++-- drivers/target/target_core_transport.c | 4 +- drivers/target/target_core_xcopy.c | 2 +- drivers/target/tcm_fc/tfc_conf.c | 2 +- drivers/thunderbolt/tb.c | 2 +- drivers/tty/serial/8250/8250_dw.c | 4 +- drivers/tty/tty_buffer.c | 8 ++-- drivers/usb/core/hub.c | 2 +- drivers/usb/dwc3/gadget.c | 2 +- drivers/usb/gadget/function/f_hid.c | 3 +- drivers/usb/host/xhci-dbgcap.c | 8 ++-- drivers/usb/host/xhci-ring.c | 2 +- drivers/usb/storage/uas.c | 2 +- drivers/usb/typec/anx7411.c | 3 +- drivers/vdpa/vdpa_user/vduse_dev.c | 3 +- drivers/virt/acrn/irqfd.c | 3 +- drivers/virtio/virtio_balloon.c | 3 +- drivers/xen/events/events_base.c | 6 +-- drivers/xen/privcmd.c | 3 +- fs/afs/callback.c | 4 +- fs/afs/main.c | 4 +- fs/afs/write.c | 2 +- fs/aio.c | 2 +- fs/bcachefs/btree_write_buffer.c | 2 +- fs/bcachefs/io_read.c | 12 ++--- fs/bcachefs/journal_io.c | 2 +- fs/bcachefs/super.c | 10 ++--- fs/btrfs/async-thread.c | 3 +- fs/btrfs/block-group.c | 2 +- fs/btrfs/disk-io.c | 11 +++-- fs/btrfs/extent_map.c | 2 +- fs/btrfs/scrub.c | 3 +- fs/btrfs/space-info.c | 4 +- fs/btrfs/zoned.c | 2 +- fs/ceph/super.c | 2 +- fs/dlm/lowcomms.c | 2 +- fs/dlm/main.c | 2 +- fs/ext4/mballoc.c | 2 +- fs/fs-writeback.c | 4 +- fs/fuse/dev.c | 2 +- fs/fuse/inode.c | 2 +- fs/gfs2/main.c | 5 ++- fs/gfs2/ops_fstype.c | 6 ++- fs/netfs/objects.c | 2 +- fs/netfs/read_collect.c | 2 +- fs/netfs/write_collect.c | 2 +- fs/nfs/namespace.c | 2 +- fs/nfs/nfs4renewd.c | 2 +- fs/nfsd/filecache.c | 2 +- fs/notify/mark.c | 4 +- fs/ocfs2/dlm/dlmdomain.c | 3 +- fs/ocfs2/dlmfs/dlmfs.c | 3 +- fs/quota/dquot.c | 2 +- fs/smb/client/cifsfs.c | 16 ++++--- fs/smb/server/ksmbd_work.c | 2 +- fs/smb/server/transport_rdma.c | 3 +- fs/super.c | 3 +- fs/verity/verify.c | 2 +- fs/xfs/xfs_log.c | 3 +- fs/xfs/xfs_mru_cache.c | 3 +- fs/xfs/xfs_super.c | 15 ++++--- include/drm/gpu_scheduler.h | 2 +- include/linux/closure.h | 2 +- include/linux/workqueue.h | 35 ++++++++------- io_uring/io_uring.c | 4 +- kernel/bpf/cgroup.c | 5 ++- kernel/bpf/cpumap.c | 2 +- kernel/bpf/helpers.c | 4 +- kernel/bpf/memalloc.c | 2 +- kernel/bpf/syscall.c | 2 +- kernel/cgroup/cgroup-v1.c | 2 +- kernel/cgroup/cgroup.c | 4 +- kernel/module/dups.c | 4 +- kernel/padata.c | 9 ++-- kernel/power/main.c | 2 +- kernel/rcu/tasks.h | 4 +- kernel/rcu/tree.c | 4 +- kernel/sched/core.c | 4 +- kernel/sched/ext.c | 4 +- kernel/smp.c | 2 +- kernel/trace/trace_events_user.c | 2 +- kernel/umh.c | 2 +- kernel/workqueue.c | 45 ++++++++++++------- mm/backing-dev.c | 6 +-- mm/kfence/core.c | 6 +-- mm/memcontrol.c | 4 +- mm/slub.c | 3 +- mm/vmstat.c | 3 +- net/bridge/br_cfm.c | 6 +-- net/bridge/br_mrp.c | 8 ++-- net/ceph/messenger.c | 3 +- net/ceph/mon_client.c | 2 +- net/core/link_watch.c | 4 +- net/core/skmsg.c | 2 +- net/core/sock_diag.c | 2 +- net/devlink/core.c | 2 +- net/ipv4/inet_fragment.c | 2 +- net/netfilter/nf_conntrack_ecache.c | 2 +- net/openvswitch/dp_notify.c | 2 +- net/rds/ib_rdma.c | 3 +- net/rfkill/input.c | 2 +- net/rxrpc/rxperf.c | 2 +- net/smc/af_smc.c | 6 +-- net/smc/smc_core.c | 4 +- net/tls/tls_device.c | 2 +- net/unix/garbage.c | 2 +- net/vmw_vsock/af_vsock.c | 2 +- net/vmw_vsock/virtio_transport.c | 2 +- net/vmw_vsock/vsock_loopback.c | 2 +- net/wireless/core.c | 4 +- net/wireless/sysfs.c | 2 +- rust/kernel/workqueue.rs | 12 ++--- sound/soc/codecs/aw88081.c | 2 +- sound/soc/codecs/aw88166.c | 2 +- sound/soc/codecs/aw88261.c | 2 +- sound/soc/codecs/aw88395/aw88395.c | 2 +- sound/soc/codecs/aw88399.c | 2 +- sound/soc/codecs/cs42l43-jack.c | 6 +-- sound/soc/codecs/cs42l43.c | 4 +- sound/soc/codecs/es8326.c | 12 ++--- sound/soc/codecs/rt5663.c | 6 +-- sound/soc/codecs/wm_adsp.c | 2 +- sound/soc/intel/boards/sof_es8336.c | 2 +- sound/soc/sof/intel/cnl.c | 2 +- sound/soc/sof/intel/hda-ipc.c | 2 +- virt/kvm/eventfd.c | 2 +- 369 files changed, 729 insertions(+), 601 deletions(-) -- 2.49.0
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