block: change config option name for cmdline partition parsing
Recently commit bab55417b1
("block: support embedded device command
line partition") introduced CONFIG_CMDLINE_PARSER. However, that name
is too generic and sounds like it enables/disables generic kernel boot
arg processing, when it really is block specific.
Before this option becomes a part of a full/final release, add the BLK_
prefix to it so that it is clear in absence of any other context that it
is block specific.
In addition, fix up the following less critical items:
- help text was not really at all helpful.
- index file for Documentation was not updated
- add the new arg to Documentation/kernel-parameters.txt
- clarify wording in source comments
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Cai Zhiyong <caizhiyong@huawei.com>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
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Коммит
080506ad0a
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@ -6,6 +6,8 @@ capability.txt
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- Generic Block Device Capability (/sys/block/<device>/capability)
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cfq-iosched.txt
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- CFQ IO scheduler tunables
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cmdline-partition.txt
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- how to specify block device partitions on kernel command line
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data-integrity.txt
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- Block data integrity
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deadline-iosched.txt
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@ -1,9 +1,9 @@
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Embedded device command line partition
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Embedded device command line partition parsing
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=====================================================================
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Read block device partition table from command line.
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The partition used for fixed block device (eMMC) embedded device.
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It is no MBR, save storage space. Bootloader can be easily accessed
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Support for reading the block device partition table from the command line.
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It is typically used for fixed block (eMMC) embedded devices.
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It has no MBR, so saves storage space. Bootloader can be easily accessed
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by absolute address of data on the block device.
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Users can easily change the partition.
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@ -480,6 +480,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
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Format: <io>,<irq>,<mode>
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See header of drivers/net/hamradio/baycom_ser_hdx.c.
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blkdevparts= Manual partition parsing of block device(s) for
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embedded devices based on command line input.
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See Documentation/block/cmdline-partition.txt
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boot_delay= Milliseconds to delay each printk during boot.
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Values larger than 10 seconds (10000) are changed to
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no delay (0).
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@ -99,11 +99,16 @@ config BLK_DEV_THROTTLING
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See Documentation/cgroups/blkio-controller.txt for more information.
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config CMDLINE_PARSER
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config BLK_CMDLINE_PARSER
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bool "Block device command line partition parser"
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default n
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---help---
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Parsing command line, get the partitions information.
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Enabling this option allows you to specify the partition layout from
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the kernel boot args. This is typically of use for embedded devices
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which don't otherwise have any standardized method for listing the
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partitions on a block device.
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See Documentation/block/cmdline-partition.txt for more information.
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menu "Partition Types"
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@ -18,4 +18,4 @@ obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o
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obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
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obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o
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obj-$(CONFIG_CMDLINE_PARSER) += cmdline-parser.o
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obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o
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@ -263,7 +263,7 @@ config SYSV68_PARTITION
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config CMDLINE_PARTITION
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bool "Command line partition support" if PARTITION_ADVANCED
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select CMDLINE_PARSER
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select BLK_CMDLINE_PARSER
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help
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Say Y here if you would read the partitions table from bootargs.
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Say Y here if you want to read the partition table from bootargs.
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The format for the command line is just like mtdparts.
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@ -2,15 +2,15 @@
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* Copyright (C) 2013 HUAWEI
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* Author: Cai Zhiyong <caizhiyong@huawei.com>
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*
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* Read block device partition table from command line.
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* The partition used for fixed block device (eMMC) embedded device.
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* It is no MBR, save storage space. Bootloader can be easily accessed
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* Read block device partition table from the command line.
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* Typically used for fixed block (eMMC) embedded devices.
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* It has no MBR, so saves storage space. Bootloader can be easily accessed
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* by absolute address of data on the block device.
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* Users can easily change the partition.
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*
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* The format for the command line is just like mtdparts.
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*
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* Verbose config please reference "Documentation/block/cmdline-partition.txt"
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* For further information, see "Documentation/block/cmdline-partition.txt"
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*
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*/
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