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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-03-26 18:58:01 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-26 19:28:18 +0300 |
| commit | bbf5a0976dc3d0369ca4e6051ba09d681e3f7d7b (patch) | |
| tree | aa553755423c9c7505f2f41efcef6cc66e3132ec /drivers/ata | |
| parent | 33531001364d32a79b34da2dd4089715384d0968 (diff) | |
| download | linux-bbf5a0976dc3d0369ca4e6051ba09d681e3f7d7b.tar.xz | |
ata: use COMMAND_LINE_SIZE for ata_force_param_buf[] size
Use COMMAND_LINE_SIZE instead PAGE_SIZE for ata_force_param_buf[]
size as libata parameters buffer doesn't need to be bigger than
the command line buffer.
For many architectures this results in decreased libata-core.o
size (COMMAND_LINE_SIZE varies from 256 to 4096 while the minimum
PAGE_SIZE is 4096).
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
41064 4413 40 45517 b1cd drivers/ata/libata-core.o
after:
41064 573 40 41677 a2cd 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 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4991f9d5def8..a9a8762448aa 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -52,6 +52,7 @@ #include <linux/leds.h> #include <linux/pm_runtime.h> #include <linux/platform_device.h> +#include <asm/setup.h> #define CREATE_TRACE_POINTS #include <trace/events/libata.h> @@ -106,7 +107,7 @@ struct ata_force_ent { static struct ata_force_ent *ata_force_tbl; static int ata_force_tbl_size; -static char ata_force_param_buf[PAGE_SIZE] __initdata; +static char ata_force_param_buf[COMMAND_LINE_SIZE] __initdata; /* param_buf is thrown away after initialization, disallow read */ module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0); MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/admin-guide/kernel-parameters.rst for details)"); |