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authorChristoph Hellwig <hch@lst.de>2014-09-30 16:43:46 +0200
committerChristoph Hellwig <hch@lst.de>2014-10-01 13:14:03 +0200
commit24c20f10583647e30afe87b6f6d5e14bc7b1cbc6 (patch)
treeeb63f3704d2a362ec36860a2f77111aeac215ce0 /drivers/scsi/scsi.c
parentscsi: fix comment in struct Scsi_Host definition (diff)
downloadlinux-24c20f10583647e30afe87b6f6d5e14bc7b1cbc6.tar.xz
linux-24c20f10583647e30afe87b6f6d5e14bc7b1cbc6.zip
scsi: add a CONFIG_SCSI_MQ_DEFAULT option
Add a Kconfig option to enable the blk-mq path for SCSI by default to ease testing and deployment in setups that know they benefit from blk-mq. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Robert Elliott <elliott@hp.com> Tested-by: Robert Elliott <elliott@hp.com>
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r--drivers/scsi/scsi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 1423cb17fbfd..79c77b485a67 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -1367,7 +1367,11 @@ MODULE_LICENSE("GPL");
module_param(scsi_logging_level, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(scsi_logging_level, "a bit mask of logging levels");
+#ifdef CONFIG_SCSI_MQ_DEFAULT
+bool scsi_use_blk_mq = true;
+#else
bool scsi_use_blk_mq = false;
+#endif
module_param_named(use_blk_mq, scsi_use_blk_mq, bool, S_IWUSR | S_IRUGO);
static int __init init_scsi(void)