Searched hist:ce6ef5abe68251cb60c4585df2cc73e218ec0dba (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/fs/btrfs/ |
| H A D | ctree.c | diff ce6ef5abe68251cb60c4585df2cc73e218ec0dba Mon Jun 08 09:06:07 CDT 2020 David Sterba <dsterba@suse.com> btrfs: add little-endian optimized key helpers
The CPU and on-disk keys are mapped to two different structures because
of the endianness. There's an intermediate buffer used to do the
conversion, but this is not necessary when CPU and on-disk endianness
match.
Add optimized versions of helpers that take disk_key and use the buffer
directly for CPU keys or drop the intermediate buffer and conversion.
This saves a lot of stack space accross many functions and removes about
6K of generated binary code:
text data bss dec hex filename
1090439 17468 14912 1122819 112203 pre/btrfs.ko
1084613 17456 14912 1116981 110b35 post/btrfs.ko
Delta: -5826
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
|
| H A D | ctree.h | diff ce6ef5abe68251cb60c4585df2cc73e218ec0dba Mon Jun 08 09:06:07 CDT 2020 David Sterba <dsterba@suse.com> btrfs: add little-endian optimized key helpers
The CPU and on-disk keys are mapped to two different structures because
of the endianness. There's an intermediate buffer used to do the
conversion, but this is not necessary when CPU and on-disk endianness
match.
Add optimized versions of helpers that take disk_key and use the buffer
directly for CPU keys or drop the intermediate buffer and conversion.
This saves a lot of stack space accross many functions and removes about
6K of generated binary code:
text data bss dec hex filename
1090439 17468 14912 1122819 112203 pre/btrfs.ko
1084613 17456 14912 1116981 110b35 post/btrfs.ko
Delta: -5826
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
|