workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 179 insertions, 0 deletions

diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
new file mode 100644
index 000000000..9242e7738
--- /dev/null
+++ b/drivers/uio/Kconfig
@@ -0,0 +1,179 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig UIO
+	tristate "Userspace I/O drivers"
+	depends on MMU
+	help
+	  Enable this to allow the userspace driver core code to be
+	  built.  This code allows userspace programs easy access to
+	  kernel interrupts and memory locations, allowing some drivers
+	  to be written in userspace.  Note that a small kernel driver
+	  is also required for interrupt handling to work properly.
+
+	  If you don't know what to do here, say N.
+
+if UIO
+
+config UIO_CIF
+	tristate "generic Hilscher CIF Card driver"
+	depends on PCI
+	help
+	  Driver for Hilscher CIF DeviceNet and Profibus cards.  This
+	  driver requires a userspace component called cif that handles
+	  all of the heavy lifting and can be found at:
+	        <http://www.osadl.org/projects/downloads/UIO/user/>
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called uio_cif.
+
+config UIO_PDRV_GENIRQ
+	tristate "Userspace I/O platform driver with generic IRQ handling"
+	help
+	  Platform driver for Userspace I/O devices, including generic
+	  interrupt handling code. Shared interrupts are not supported.
+
+	  This kernel driver requires that the matching userspace driver
+	  handles interrupts in a special way. Userspace is responsible
+	  for acknowledging the hardware device if needed, and re-enabling
+	  interrupts in the interrupt controller using the write() syscall.
+
+	  If you don't know what to do here, say N.
+
+config UIO_DMEM_GENIRQ
+	tristate "Userspace platform driver with generic irq and dynamic memory"
+	depends on HAS_DMA
+	help
+	  Platform driver for Userspace I/O devices, including generic
+	  interrupt handling code. Shared interrupts are not supported.
+
+	  Memory regions can be specified with the same platform device
+	  resources as the UIO_PDRV drivers, but dynamic regions can also
+	  be specified.
+	  The number and size of these regions is static,
+	  but the memory allocation is not performed until
+	  the associated device file is opened. The
+	  memory is freed once the uio device is closed.
+
+	  If you don't know what to do here, say N.
+
+config UIO_AEC
+	tristate "AEC video timestamp device"
+	depends on PCI
+	help
+
+	  UIO driver for the Adrienne Electronics Corporation PCI time
+	  code device.
+
+	  This device differs from other UIO devices since it uses I/O
+	  ports instead of memory mapped I/O. In order to make it
+	  possible for UIO to work with this device a utility, uioport,
+	  can be used to read and write the ports:
+
+	    git clone git://ifup.org/philips/uioport.git
+
+	  If you compile this as a module, it will be called uio_aec.
+
+config UIO_SERCOS3
+	tristate "Automata Sercos III PCI card driver"
+	depends on PCI
+	help
+	  Userspace I/O interface for the Sercos III PCI card from
+	  Automata GmbH. The userspace part of this driver will be
+	  available for download from the Automata GmbH web site.
+
+	  Automata GmbH:        http://www.automataweb.com
+	  Sercos III interface: http://www.sercos.com
+
+	  If you compile this as a module, it will be called uio_sercos3.
+
+config UIO_PCI_GENERIC
+	tristate "Generic driver for PCI 2.3 and PCI Express cards"
+	depends on PCI
+	help
+	  Generic driver that you can bind, dynamically, to any
+	  PCI 2.3 compliant and PCI Express card. It is useful,
+	  primarily, for virtualization scenarios.
+	  If you compile this as a module, it will be called uio_pci_generic.
+
+config UIO_NETX
+	tristate "Hilscher NetX Card driver"
+	depends on PCI
+	help
+	  Driver for Hilscher NetX based fieldbus cards (cifX, comX).
+	  This driver requires a userspace component that comes with the card
+	  or is available from Hilscher (http://www.hilscher.com).
+
+	  To compile this driver as a module, choose M here; the module
+	  will be called uio_netx.
+
+config UIO_FSL_ELBC_GPCM
+	tristate "eLBC/GPCM driver"
+	depends on FSL_LBC
+	help
+	  Generic driver for accessing a peripheral connected to an eLBC port
+	  that is running in GPCM mode. GPCM is an interface for simple lower
+	  performance memories and memory-mapped devices. For devices using
+	  FCM or UPM eLBC modes, other device-specific drivers are available.
+
+config UIO_FSL_ELBC_GPCM_NETX5152
+	bool "eLBC/GPCM netX 51/52 support"
+	depends on UIO_FSL_ELBC_GPCM
+	help
+	  This will add support for netX 51/52 devices connected via eLBC/GPCM.
+	  In particular, it implements interrupt handling. This can be used
+	  together with the userspace netX stack from Hilscher.
+
+	  Information about this hardware can be found at:
+	  http://www.hilscher.com/netx
+
+config UIO_MF624
+	tristate "Humusoft MF624 DAQ PCI card driver"
+	depends on PCI
+	help
+	  Userspace I/O interface for the Humusoft MF624 PCI card.
+	  A sample userspace application using this driver is available
+	  (among other MF624 related information and software components)
+	  for download in a git repository:
+
+	    git clone git://rtime.felk.cvut.cz/mf6xx.git
+
+	  If you compile this as a module, it will be called uio_mf624.
+
+config UIO_HV_GENERIC
+	tristate "Generic driver for Hyper-V VMBus"
+	depends on HYPERV_VMBUS
+	help
+	  Generic driver that you can bind, dynamically, to any
+	  Hyper-V VMBus device. It is useful to provide direct access
+	  to network and storage devices from userspace.
+
+	  If you compile this as a module, it will be called uio_hv_generic.
+
+config UIO_DFL
+	tristate "Generic driver for DFL (Device Feature List) bus"
+	depends on FPGA_DFL
+	help
+	  Generic DFL (Device Feature List) driver for Userspace I/O devices.
+	  It is useful to provide direct access to DFL devices from userspace.
+	  A sample userspace application using this driver is available for
+	  download in a git repository:
+
+	    git clone https://github.com/OPAE/opae-sdk.git
+
+	  It could be found at:
+
+	    opae-sdk/tools/libopaeuio/
+
+	  If you compile this as a module, it will be called uio_dfl.
+
+config UIO_PCI_GENERIC_SVA
+	tristate "Generic driver for PCI Express that supports sva"
+	depends on PCI && IOMMU_SVA
+	help
+	  Userspace I/O driver for PCI devices that support Shared Virtual
+	  Addressing (SVA), enabling direct use of user-space virtual
+	  addresses in device DMA operations via IOMMU hardware.
+
+	  This driver binds to PCI devices and exposes them to userspace
+	  via the UIO framework.
+
+endif