Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-21 07:23:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

scsi: qla2xxx: Disable ATIO interrupt coalesce for quad port ISP27XX

Browse Source 
This partially reverts commit d2b292c3f6 ("scsi: qla2xxx: Enable ATIO
interrupt handshake for ISP27XX")

For some workloads where the host sends a batch of commands and then
pauses, ATIO interrupt coalesce can cause some incoming ATIO entries to be
ignored for extended periods of time, resulting in slow performance,
timeouts, and aborted commands.

Disable interrupt coalesce and re-enable the dedicated ATIO MSI-X
interrupt.

Link: https://lore.kernel.org/r/97dcf365-89ff-014d-a3e5-1404c6af511c@cybernetics.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tony Battersby 2022-07-07 15:08:01 -04:00 committed by Martin K. Petersen
parent c6380f9924
commit 53661ded24
1 changed files with 2 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/scsi/qla2xxx/qla_target.c
View File

@ -6935,14 +6935,8 @@ qlt_24xx_config_rings(struct scsi_qla_host *vha)
if (ha->flags.msix_enabled) {
if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
if (IS_QLA2071(ha)) {
/* 4 ports Baker: Enable Interrupt Handshake */
icb->msix_atio = 0;
icb->firmware_options_2 |= cpu_to_le32(BIT_26);
} else {
icb->msix_atio = cpu_to_le16(msix->entry);
icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
}
icb->msix_atio = cpu_to_le16(msix->entry);
icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
ql_dbg(ql_dbg_init, vha, 0xf072,
"Registering ICB vector 0x%x for atio que.\n",
msix->entry);