[PATCH] mark several libata datastructures const
Hi,
the patch below marks several libata (and libata-driver) structures
const so that they end up in the .rodata segment and don't false-share
cachelines with things that get dirtied often.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 9f27e8d..11ed6fa 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -605,7 +605,7 @@
tf->command = ata_rw_cmds[index + lba48 + write];
}
-static const char * xfer_mode_str[] = {
+static const char * const xfer_mode_str[] = {
"UDMA/16",
"UDMA/25",
"UDMA/33",
@@ -2083,7 +2083,7 @@
ap->id, dev->devno);
}
-static const char * ata_dma_blacklist [] = {
+static const char * const ata_dma_blacklist [] = {
"WDC AC11000H",
"WDC AC22100H",
"WDC AC32500H",