From: Igor Pylypiv Date: Tue, 26 Nov 2024 22:49:23 +0000 (+0000) Subject: scsi: pm80xx: Increase reserved tags from 8 to 128 X-Git-Tag: v6.14-rc1~80^2~46 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b64004dbcd239d5eeac0b41c167a306291510d55;p=thirdparty%2Fkernel%2Flinux.git scsi: pm80xx: Increase reserved tags from 8 to 128 Increase the number of reserved tags to prevent command processing failures when the driver is under stress. 8 reserved tags are quickly getting all used up leading to errors when command completions are delayed. The driver needs ~512 ccbs/tags for maximum I/O utilization: 16 (max disks) * 32 (max SATA queue depth) = ~512 ccbs/tags. By reserving 128 tags the driver will still have plenty of tags/ccbs left: 1024 (max ccbs) - 128 (reserved slot) = 896 tags/ccbs left. Signed-off-by: Igor Pylypiv Signed-off-by: Salomon Dushimirimana Link: https://lore.kernel.org/r/20241126224923.973528-1-salomondush@google.com Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/pm8001/pm8001_defs.h b/drivers/scsi/pm8001/pm8001_defs.h index 7871e29a820a0..4e19d61dffbbb 100644 --- a/drivers/scsi/pm8001/pm8001_defs.h +++ b/drivers/scsi/pm8001/pm8001_defs.h @@ -90,7 +90,7 @@ enum port_type { #define PM8001_MAX_PORTS 16 /* max. possible ports */ #define PM8001_MAX_DEVICES 2048 /* max supported device */ #define PM8001_MAX_MSIX_VEC 64 /* max msi-x int for spcv/ve */ -#define PM8001_RESERVE_SLOT 8 +#define PM8001_RESERVE_SLOT 128 #define PM8001_SECTOR_SIZE 512 #define PM8001_PAGE_SIZE_4K 4096