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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2020-03-26 16:58:01 +0100
committerJens Axboe <axboe@kernel.dk>2020-03-26 10:28:18 -0600
commitbbf5a0976dc3d0369ca4e6051ba09d681e3f7d7b (patch)
treeaa553755423c9c7505f2f41efcef6cc66e3132ec /drivers/ata
parent33531001364d32a79b34da2dd4089715384d0968 (diff)
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.c3
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)");