diff options
Diffstat (limited to 'block/Kconfig')
| -rw-r--r-- | block/Kconfig | 172 |
1 files changed, 102 insertions, 70 deletions
diff --git a/block/Kconfig b/block/Kconfig index 2466dcc3ef1d..86122e459fe0 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -6,7 +6,6 @@ menuconfig BLOCK bool "Enable the block layer" if EXPERT default y select SBITMAP - select SRCU help Provide block layer support for the kernel. @@ -26,32 +25,34 @@ menuconfig BLOCK if BLOCK -config BLK_SCSI_REQUEST - bool - -config BLK_DEV_BSG - bool "Block layer SG support v4" +config BLOCK_LEGACY_AUTOLOAD + bool "Legacy autoloading support" default y - select BLK_SCSI_REQUEST help - Saying Y here will enable generic SG (SCSI generic) v4 support - for any block device. + Enable loading modules and creating block device instances based on + accesses through their device special file. This is a historic Linux + feature and makes no sense in a udev world where device files are + created on demand, but scripts that manually create device nodes and + then call losetup might rely on this behavior. + +config BLK_RQ_ALLOC_TIME + bool + +config BLK_CGROUP_RWSTAT + bool - Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4 - can handle complicated SCSI commands: tagged variable length cdbs - with bidirectional data transfers and generic request/response - protocols (e.g. Task Management Functions and SMP in Serial - Attached SCSI). +config BLK_CGROUP_PUNT_BIO + bool - This option is required by recent UDEV versions to properly - access device serial numbers, etc. +config BLK_DEV_BSG_COMMON + tristate - If unsure, say Y. +config BLK_ICQ + bool config BLK_DEV_BSGLIB bool "Block layer SG support v4 helper lib" - select BLK_DEV_BSG - select BLK_SCSI_REQUEST + select BLK_DEV_BSG_COMMON help Subsystems will normally enable this if needed. Users will not normally need to manually enable this. @@ -60,8 +61,7 @@ config BLK_DEV_BSGLIB config BLK_DEV_INTEGRITY bool "Block layer data integrity support" - select CRC_T10DIF if BLK_DEV_INTEGRITY - ---help--- + help Some storage devices allow extra information to be stored/retrieved to help protect the data. The block layer data integrity option provides hooks which can be used by @@ -71,30 +71,38 @@ config BLK_DEV_INTEGRITY T10/SCSI Data Integrity Field or the T13/ATA External Path Protection. If in doubt, say N. +config BLK_DEV_INTEGRITY_T10 + tristate + depends on BLK_DEV_INTEGRITY + select CRC_T10DIF + select CRC64_ROCKSOFT + config BLK_DEV_ZONED bool "Zoned block device support" select MQ_IOSCHED_DEADLINE - ---help--- + help Block layer zoned block device support. This option enables - support for ZAC/ZBC host-managed and host-aware zoned block devices. + support for ZAC/ZBC/ZNS host-managed and host-aware zoned block + devices. - Say yes here if you have a ZAC or ZBC storage device. + Say yes here if you have a ZAC, ZBC, or ZNS storage device. config BLK_DEV_THROTTLING bool "Block layer bio throttling support" - depends on BLK_CGROUP=y - ---help--- + depends on BLK_CGROUP + select BLK_CGROUP_RWSTAT + help Block layer bio throttling support. It can be used to limit the IO rate to a device. IO rate policies are per cgroup and one needs to mount and use blkio cgroup controller for creating cgroups and specifying per device IO rate policies. - See Documentation/cgroup-v1/blkio-controller.txt for more information. + See Documentation/admin-guide/cgroup-v1/blkio-controller.rst for more information. config BLK_DEV_THROTTLING_LOW bool "Block throttling .low limit interface support (EXPERIMENTAL)" depends on BLK_DEV_THROTTLING - ---help--- + help Add .low limit interface for block throttling. The low limit is a best effort limit to prioritize cgroups. Depending on the setting, the limit can be used to protect cgroups in terms of bandwidth/iops and better @@ -102,29 +110,26 @@ config BLK_DEV_THROTTLING_LOW Note, this is an experimental interface and could be changed someday. -config BLK_CMDLINE_PARSER - bool "Block device command line partition parser" - ---help--- - Enabling this option allows you to specify the partition layout from - the kernel boot args. This is typically of use for embedded devices - which don't otherwise have any standardized method for listing the - partitions on a block device. - - See Documentation/block/cmdline-partition.txt for more information. - config BLK_WBT bool "Enable support for block device writeback throttling" - ---help--- + help Enabling this option enables the block layer to throttle buffered background writeback from the VM, making it more smooth and having less impact on foreground operations. The throttling is done dynamically on an algorithm loosely based on CoDel, factoring in the realtime performance of the disk. +config BLK_WBT_MQ + bool "Enable writeback throttling by default" + default y + depends on BLK_WBT + help + Enable writeback throttling by default for request-based block devices. + config BLK_CGROUP_IOLATENCY bool "Enable support for latency based cgroup IO protection" - depends on BLK_CGROUP=y - ---help--- + depends on BLK_CGROUP + help Enabling this option enables the .latency interface for IO throttling. The IO controller will attempt to maintain average IO latencies below the configured latency target, throttling anybody with a higher latency @@ -132,20 +137,39 @@ config BLK_CGROUP_IOLATENCY Note, this is an experimental interface and could be changed someday. -config BLK_WBT_MQ - bool "Multiqueue writeback throttling" - default y - depends on BLK_WBT - ---help--- - Enable writeback throttling by default on multiqueue devices. - Multiqueue currently doesn't have support for IO scheduling, - enabling this option is recommended. +config BLK_CGROUP_FC_APPID + bool "Enable support to track FC I/O Traffic across cgroup applications" + depends on BLK_CGROUP && NVME_FC + help + Enabling this option enables the support to track FC I/O traffic across + cgroup applications. It enables the Fabric and the storage targets to + identify, monitor, and handle FC traffic based on VM tags by inserting + application specific identification into the FC frame. + +config BLK_CGROUP_IOCOST + bool "Enable support for cost model based cgroup IO controller" + depends on BLK_CGROUP + select BLK_RQ_ALLOC_TIME + help + Enabling this option enables the .weight interface for cost + model based proportional IO control. The IO controller + distributes IO capacity between different groups based on + their share of the overall weight distribution. + +config BLK_CGROUP_IOPRIO + bool "Cgroup I/O controller for assigning an I/O priority class" + depends on BLK_CGROUP + help + Enable the .prio interface for assigning an I/O priority class to + requests. The I/O priority class affects the order in which an I/O + scheduler and block devices process requests. Only some I/O schedulers + and some block devices support I/O priorities. config BLK_DEBUG_FS bool "Block layer debugging information in debugfs" default y depends on DEBUG_FS - ---help--- + help Include block layer debugging information in debugfs. This information is mostly useful for kernel developers, but it doesn't incur any cost at runtime. @@ -159,40 +183,48 @@ config BLK_DEBUG_FS_ZONED config BLK_SED_OPAL bool "Logic for interfacing with Opal enabled SEDs" - ---help--- + help Builds Logic for interfacing with Opal enabled controllers. Enabling this option enables users to setup/unlock/lock Locking ranges for SED devices using the Opal protocol. -menu "Partition Types" +config BLK_INLINE_ENCRYPTION + bool "Enable inline encryption support in block layer" + help + Build the blk-crypto subsystem. Enabling this lets the + block layer handle encryption, so users can take + advantage of inline encryption hardware if present. + +config BLK_INLINE_ENCRYPTION_FALLBACK + bool "Enable crypto API fallback for blk-crypto" + depends on BLK_INLINE_ENCRYPTION + select CRYPTO + select CRYPTO_SKCIPHER + help + Enabling this lets the block layer handle inline encryption + by falling back to the kernel crypto API when inline + encryption hardware is not present. source "block/partitions/Kconfig" -endmenu - -endif # BLOCK - -config BLOCK_COMPAT - bool - depends on BLOCK && COMPAT - default y - config BLK_MQ_PCI - bool - depends on BLOCK && PCI - default y + def_bool PCI config BLK_MQ_VIRTIO bool - depends on BLOCK && VIRTIO + depends on VIRTIO default y -config BLK_MQ_RDMA +config BLK_PM + def_bool PM + +# do not use in new code +config BLOCK_HOLDER_DEPRECATED bool - depends on BLOCK && INFINIBAND - default y -config BLK_PM - def_bool BLOCK && PM +config BLK_MQ_STACKING + bool source "block/Kconfig.iosched" + +endif # BLOCK |