Subject: + block-change-config-option-name-for-cmdline-partition-parsing.patch added to -mm tree
To: paul.gortmaker@xxxxxxxxxxxxx,axboe@xxxxxxxxx,caizhiyong@xxxxxxxxxx,yongjun_wei@xxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 25 Sep 2013 18:09:24 -0700
The patch titled
Subject: block: change config option name for cmdline partition parsing
has been added to the -mm tree. Its filename is
block-change-config-option-name-for-cmdline-partition-parsing.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/block-change-config-option-name-for-cmdline-partition-parsing.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/block-change-config-option-name-for-cmdline-partition-parsing.patch
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From: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Subject: block: change config option name for cmdline partition parsing
Recently added bab55417b10c9 ("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@xxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Cai Zhiyong <caizhiyong@xxxxxxxxxx>
Cc: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/block/00-INDEX | 2 ++
Documentation/block/cmdline-partition.txt | 8 ++++----
Documentation/kernel-parameters.txt | 4 ++++
block/Kconfig | 9 +++++++--
block/Makefile | 2 +-
block/partitions/Kconfig | 4 ++--
block/partitions/cmdline.c | 8 ++++----
7 files changed, 24 insertions(+), 13 deletions(-)
diff -puN Documentation/block/00-INDEX~block-change-config-option-name-for-cmdline-partition-parsing Documentation/block/00-INDEX
--- a/Documentation/block/00-INDEX~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/Documentation/block/00-INDEX
@@ -6,6 +6,8 @@ capability.txt
- Generic Block Device Capability (/sys/block/<device>/capability)
cfq-iosched.txt
- CFQ IO scheduler tunables
+cmdline-partition.txt
+ - how to specify block device partitions on kernel command line
data-integrity.txt
- Block data integrity
deadline-iosched.txt
diff -puN Documentation/block/cmdline-partition.txt~block-change-config-option-name-for-cmdline-partition-parsing Documentation/block/cmdline-partition.txt
--- a/Documentation/block/cmdline-partition.txt~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/Documentation/block/cmdline-partition.txt
@@ -1,9 +1,9 @@
-Embedded device command line partition
+Embedded device command line partition parsing
=====================================================================
-Read block device partition table from command line.
-The partition used for fixed block device (eMMC) embedded device.
-It is no MBR, save storage space. Bootloader can be easily accessed
+Support for reading the block device partition table from the command line.
+It is typically used for fixed block (eMMC) embedded devices.
+It has no MBR, so saves storage space. Bootloader can be easily accessed
by absolute address of data on the block device.
Users can easily change the partition.
diff -puN Documentation/kernel-parameters.txt~block-change-config-option-name-for-cmdline-partition-parsing Documentation/kernel-parameters.txt
--- a/Documentation/kernel-parameters.txt~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/Documentation/kernel-parameters.txt
@@ -480,6 +480,10 @@ bytes respectively. Such letter suffixes
Format: <io>,<irq>,<mode>
See header of drivers/net/hamradio/baycom_ser_hdx.c.
+ blkdevparts= Manual partition parsing of block device(s) for
+ embedded devices based on command line input.
+ See Documentation/block/cmdline-partition.txt
+
boot_delay= Milliseconds to delay each printk during boot.
Values larger than 10 seconds (10000) are changed to
no delay (0).
diff -puN block/Kconfig~block-change-config-option-name-for-cmdline-partition-parsing block/Kconfig
--- a/block/Kconfig~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/block/Kconfig
@@ -99,11 +99,16 @@ config BLK_DEV_THROTTLING
See Documentation/cgroups/blkio-controller.txt for more information.
-config CMDLINE_PARSER
+config BLK_CMDLINE_PARSER
bool "Block device command line partition parser"
default n
---help---
- Parsing command line, get the partitions information.
+ 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.
menu "Partition Types"
diff -puN block/Makefile~block-change-config-option-name-for-cmdline-partition-parsing block/Makefile
--- a/block/Makefile~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/block/Makefile
@@ -18,4 +18,4 @@ obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched
obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o
-obj-$(CONFIG_CMDLINE_PARSER) += cmdline-parser.o
+obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o
diff -puN block/partitions/Kconfig~block-change-config-option-name-for-cmdline-partition-parsing block/partitions/Kconfig
--- a/block/partitions/Kconfig~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/block/partitions/Kconfig
@@ -263,7 +263,7 @@ config SYSV68_PARTITION
config CMDLINE_PARTITION
bool "Command line partition support" if PARTITION_ADVANCED
- select CMDLINE_PARSER
+ select BLK_CMDLINE_PARSER
help
- Say Y here if you would read the partitions table from bootargs.
+ Say Y here if you want to read the partition table from bootargs.
The format for the command line is just like mtdparts.
diff -puN block/partitions/cmdline.c~block-change-config-option-name-for-cmdline-partition-parsing block/partitions/cmdline.c
--- a/block/partitions/cmdline.c~block-change-config-option-name-for-cmdline-partition-parsing
+++ a/block/partitions/cmdline.c
@@ -2,15 +2,15 @@
* Copyright (C) 2013 HUAWEI
* Author: Cai Zhiyong <caizhiyong@xxxxxxxxxx>
*
- * Read block device partition table from command line.
- * The partition used for fixed block device (eMMC) embedded device.
- * It is no MBR, save storage space. Bootloader can be easily accessed
+ * Read block device partition table from the command line.
+ * Typically used for fixed block (eMMC) embedded devices.
+ * It has no MBR, so saves storage space. Bootloader can be easily accessed
* by absolute address of data on the block device.
* Users can easily change the partition.
*
* The format for the command line is just like mtdparts.
*
- * Verbose config please reference "Documentation/block/cmdline-partition.txt"
+ * For further information, see "Documentation/block/cmdline-partition.txt"
*
*/
_
Patches currently in -mm which might be from paul.gortmaker@xxxxxxxxxxxxx are
block-change-config-option-name-for-cmdline-partition-parsing.patch
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