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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/base/Kconfig
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/base/Kconfig')
-rw-r--r--drivers/base/Kconfig245
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diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
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+# SPDX-License-Identifier: GPL-2.0
+menu "Generic Driver Options"
+
+config AUXILIARY_BUS
+ bool
+
+config UEVENT_HELPER
+ bool "Support for uevent helper"
+ help
+ The uevent helper program is forked by the kernel for
+ every uevent.
+ Before the switch to the netlink-based uevent source, this was
+ used to hook hotplug scripts into kernel device events. It
+ usually pointed to a shell script at /sbin/hotplug.
+ This should not be used today, because usual systems create
+ many events at bootup or device discovery in a very short time
+ frame. One forked process per event can create so many processes
+ that it creates a high system load, or on smaller systems
+ it is known to create out-of-memory situations during bootup.
+
+config UEVENT_HELPER_PATH
+ string "path to uevent helper"
+ depends on UEVENT_HELPER
+ default ""
+ help
+ To disable user space helper program execution at by default
+ specify an empty string here. This setting can still be altered
+ via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper
+ later at runtime.
+
+config DEVTMPFS
+ bool "Maintain a devtmpfs filesystem to mount at /dev"
+ help
+ This creates a tmpfs/ramfs filesystem instance early at bootup.
+ In this filesystem, the kernel driver core maintains device
+ nodes with their default names and permissions for all
+ registered devices with an assigned major/minor number.
+ Userspace can modify the filesystem content as needed, add
+ symlinks, and apply needed permissions.
+ It provides a fully functional /dev directory, where usually
+ udev runs on top, managing permissions and adding meaningful
+ symlinks.
+ In very limited environments, it may provide a sufficient
+ functional /dev without any further help. It also allows simple
+ rescue systems, and reliably handles dynamic major/minor numbers.
+
+ Notice: if CONFIG_TMPFS isn't enabled, the simpler ramfs
+ file system will be used instead.
+
+config DEVTMPFS_MOUNT
+ bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"
+ depends on DEVTMPFS
+ help
+ This will instruct the kernel to automatically mount the
+ devtmpfs filesystem at /dev, directly after the kernel has
+ mounted the root filesystem. The behavior can be overridden
+ with the commandline parameter: devtmpfs.mount=0|1.
+ This option does not affect initramfs based booting, here
+ the devtmpfs filesystem always needs to be mounted manually
+ after the rootfs is mounted.
+ With this option enabled, it allows to bring up a system in
+ rescue mode with init=/bin/sh, even when the /dev directory
+ on the rootfs is completely empty.
+
+config DEVTMPFS_SAFE
+ bool "Use nosuid,noexec mount options on devtmpfs"
+ depends on DEVTMPFS
+ help
+ This instructs the kernel to include the MS_NOEXEC and MS_NOSUID mount
+ flags when mounting devtmpfs.
+
+ Notice: If enabled, things like /dev/mem cannot be mmapped
+ with the PROT_EXEC flag. This can break, for example, non-KMS
+ video drivers.
+
+config STANDALONE
+ bool "Select only drivers that don't need compile-time external firmware"
+ default y
+ help
+ Select this option if you don't have magic firmware for drivers that
+ need it.
+
+ If unsure, say Y.
+
+config PREVENT_FIRMWARE_BUILD
+ bool "Disable drivers features which enable custom firmware building"
+ default y
+ help
+ Say yes to disable driver features which enable building a custom
+ driver firmware at kernel build time. These drivers do not use the
+ kernel firmware API to load firmware (CONFIG_FW_LOADER), instead they
+ use their own custom loading mechanism. The required firmware is
+ usually shipped with the driver, building the driver firmware
+ should only be needed if you have an updated firmware source.
+
+ Firmware should not be being built as part of kernel, these days
+ you should always prevent this and say Y here. There are only two
+ old drivers which enable building of its firmware at kernel build
+ time:
+
+ o CONFIG_WANXL through CONFIG_WANXL_BUILD_FIRMWARE
+ o CONFIG_SCSI_AIC79XX through CONFIG_AIC79XX_BUILD_FIRMWARE
+
+source "drivers/base/firmware_loader/Kconfig"
+
+config WANT_DEV_COREDUMP
+ bool
+ help
+ Drivers should "select" this option if they desire to use the
+ device coredump mechanism.
+
+config ALLOW_DEV_COREDUMP
+ bool "Allow device coredump" if EXPERT
+ default y
+ help
+ This option controls if the device coredump mechanism is available or
+ not; if disabled, the mechanism will be omitted even if drivers that
+ can use it are enabled.
+ Say 'N' for more sensitive systems or systems that don't want
+ to ever access the information to not have the code, nor keep any
+ data.
+
+ If unsure, say Y.
+
+config DEV_COREDUMP
+ bool
+ default y if WANT_DEV_COREDUMP
+ depends on ALLOW_DEV_COREDUMP
+
+config DEBUG_DRIVER
+ bool "Driver Core verbose debug messages"
+ depends on DEBUG_KERNEL
+ help
+ Say Y here if you want the Driver core to produce a bunch of
+ debug messages to the system log. Select this if you are having a
+ problem with the driver core and want to see more of what is
+ going on.
+
+ If you are unsure about this, say N here.
+
+config DEBUG_DEVRES
+ bool "Managed device resources verbose debug messages"
+ depends on DEBUG_KERNEL
+ help
+ This option enables kernel parameter devres.log. If set to
+ non-zero, devres debug messages are printed. Select this if
+ you are having a problem with devres or want to debug
+ resource management for a managed device. devres.log can be
+ switched on and off from sysfs node.
+
+ If you are unsure about this, Say N here.
+
+config DEBUG_TEST_DRIVER_REMOVE
+ bool "Test driver remove calls during probe (UNSTABLE)"
+ depends on DEBUG_KERNEL
+ help
+ Say Y here if you want the Driver core to test driver remove functions
+ by calling probe, remove, probe. This tests the remove path without
+ having to unbind the driver or unload the driver module.
+
+ This option is expected to find errors and may render your system
+ unusable. You should say N here unless you are explicitly looking to
+ test this functionality.
+
+config PM_QOS_KUNIT_TEST
+ bool "KUnit Test for PM QoS features" if !KUNIT_ALL_TESTS
+ depends on KUNIT=y
+ default KUNIT_ALL_TESTS
+
+config HMEM_REPORTING
+ bool
+ default n
+ depends on NUMA
+ help
+ Enable reporting for heterogeneous memory access attributes under
+ their non-uniform memory nodes.
+
+source "drivers/base/test/Kconfig"
+
+config SYS_HYPERVISOR
+ bool
+ default n
+
+config GENERIC_CPU_DEVICES
+ bool
+ default n
+
+config GENERIC_CPU_AUTOPROBE
+ bool
+
+config GENERIC_CPU_VULNERABILITIES
+ bool
+
+config SOC_BUS
+ bool
+ select GLOB
+
+source "drivers/base/regmap/Kconfig"
+
+config DMA_SHARED_BUFFER
+ bool
+ default n
+ select IRQ_WORK
+ help
+ This option enables the framework for buffer-sharing between
+ multiple drivers. A buffer is associated with a file using driver
+ APIs extension; the file's descriptor can then be passed on to other
+ driver.
+
+config DMA_FENCE_TRACE
+ bool "Enable verbose DMA_FENCE_TRACE messages"
+ depends on DMA_SHARED_BUFFER
+ help
+ Enable the DMA_FENCE_TRACE printks. This will add extra
+ spam to the console log, but will make it easier to diagnose
+ lockup related problems for dma-buffers shared across multiple
+ devices.
+
+config GENERIC_ARCH_TOPOLOGY
+ bool
+ help
+ Enable support for architectures common topology code: e.g., parsing
+ CPU capacity information from DT, usage of such information for
+ appropriate scaling, sysfs interface for reading capacity values at
+ runtime.
+
+config GENERIC_ARCH_NUMA
+ bool
+ help
+ Enable support for generic NUMA implementation. Currently, RISC-V
+ and ARM64 use it.
+
+config FW_DEVLINK_SYNC_STATE_TIMEOUT
+ bool "sync_state() behavior defaults to timeout instead of strict"
+ help
+ This is build time equivalent of adding kernel command line parameter
+ "fw_devlink.sync_state=timeout". Give up waiting on consumers and
+ call sync_state() on any devices that haven't yet received their
+ sync_state() calls after deferred_probe_timeout has expired or by
+ late_initcall() if !CONFIG_MODULES. You should almost always want to
+ select N here unless you have already successfully tested with the
+ command line option on every system/board your kernel is expected to
+ work on.
+
+endmenu