Commit 40297927575a50b1d0d308d735c445924d33fba6
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55d1d26f23
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bzip2/lzma: don't ask for compression mode for the default initramfs
Impact: Kconfig noise reduction, documentation The default initramfs is so small that it makes no sense to worry about the additional memory taken by not double-compressing it. Therefore, don't bug the user with it. Also, improve the description of the option, which was downright incorrect. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Showing 1 changed file with 22 additions and 10 deletions Side-by-side Diff
usr/Kconfig
| ... | ... | @@ -72,23 +72,24 @@ |
| 72 | 72 | Support loading of a LZMA encoded initial ramdisk or cpio buffer |
| 73 | 73 | If unsure, say N. |
| 74 | 74 | |
| 75 | +if INITRAMFS_SOURCE!="" | |
| 76 | + | |
| 75 | 77 | choice |
| 76 | 78 | prompt "Built-in initramfs compression mode" |
| 77 | 79 | help |
| 78 | - This setting is only meaningful if the INITRAMFS_SOURCE is | |
| 79 | - set. It decides by which algorithm the INITRAMFS_SOURCE will | |
| 80 | - be compressed. | |
| 81 | - Several compression algorithms are available, which differ | |
| 82 | - in efficiency, compression and decompression speed. | |
| 83 | - Compression speed is only relevant when building a kernel. | |
| 84 | - Decompression speed is relevant at each boot. | |
| 80 | + This option decides by which algorithm the builtin initramfs | |
| 81 | + will be compressed. Several compression algorithms are | |
| 82 | + available, which differ in efficiency, compression and | |
| 83 | + decompression speed. Compression speed is only relevant | |
| 84 | + when building a kernel. Decompression speed is relevant at | |
| 85 | + each boot. | |
| 85 | 86 | |
| 86 | 87 | If you have any problems with bzip2 or LZMA compressed |
| 87 | 88 | initramfs, mail me (Alain Knaff) <alain@knaff.lu>. |
| 88 | 89 | |
| 89 | - High compression options are mostly useful for users who | |
| 90 | - are low on disk space (embedded systems), but for whom ram | |
| 91 | - size matters less. | |
| 90 | + High compression options are mostly useful for users who are | |
| 91 | + low on RAM, since it reduces the memory consumption during | |
| 92 | + boot. | |
| 92 | 93 | |
| 93 | 94 | If in doubt, select 'gzip' |
| 94 | 95 | |
| ... | ... | @@ -133,4 +134,15 @@ |
| 133 | 134 | smaller with LZMA in comparison to gzip. |
| 134 | 135 | |
| 135 | 136 | endchoice |
| 137 | + | |
| 138 | +endif | |
| 139 | + | |
| 140 | +if INITRAMFS_SOURCE="" | |
| 141 | +# The builtin initramfs is so small so we don't want to bug the user... | |
| 142 | + | |
| 143 | +config INITRAMFS_COMPRESSION_NONE | |
| 144 | + bool | |
| 145 | + default y | |
| 146 | + | |
| 147 | +endif |