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| author |   Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-03-26 16:58:02 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-03-26 10:28:18 -0600 |
| commit | 8ba5a45c998cdbfb565fb7670782407c3e4a25ba (patch) | |
| tree | c6dd359a2cc071a121386332996ba710ef456f7c /include/linux/libata.h | |
| parent | ata: use COMMAND_LINE_SIZE for ata_force_param_buf[] size (diff) | |
| download | linux-dev-8ba5a45c998cdbfb565fb7670782407c3e4a25ba.tar.xz linux-dev-8ba5a45c998cdbfb565fb7670782407c3e4a25ba.zip | |
ata: optimize struct ata_force_param size
Optimize struct ata_force_param size by:
- using u8 for cbl and spd_limit fields
- using u16 for lflags field
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
41064 573 40 41677 a2cd drivers/ata/libata-core.o
after:
40654 573 40 41267 a133 drivers/ata/libata-core.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/libata.h')
| -rw-r--r-- | include/linux/libata.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 350fa584acde..236e4c55be48 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -174,6 +174,7 @@ enum { ATA_DEV_NONE = 11, /* no device */ /* struct ata_link flags */ + /* NOTE: struct ata_force_param currently stores lflags in u16 */ ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ |