diff mbox series

[v7,07/12] cxl: Move QoS class to be calculated from the nearest CPU

Message ID 20240308220055.2172956-8-dave.jiang@intel.com
State Accepted
Commit 6ef83c4e19e9ce20a05127eec8a10911cf3516a7
Headers show
Series cxl: Add support to report region access coordinates to numa nodes | expand

Commit Message

Dave Jiang March 8, 2024, 9:59 p.m. UTC 
Retrieve the qos_class (QTG ID) using the access coordinates from the
nearest CPU rather than the nearst initiator that may not be a CPU.
This may be the more appropriate number that applications care about.

For most cases, access0 and access1 have the same values.

Link: https://lore.kernel.org/linux-cxl/20240112113023.00006c50@Huawei.com/
Suggested-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/cxl/core/cdat.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/cxl/core/cdat.c b/drivers/cxl/core/cdat.c
index 04dfda9d1f1b..02e97a90a43c 100644
--- a/drivers/cxl/core/cdat.c
+++ b/drivers/cxl/core/cdat.c
@@ -198,12 +198,12 @@  static int cxl_port_perf_data_calculate(struct cxl_port *port,
 		 * coordinates in order to allow calculation of access class
 		 * 0 and 1 for region later.
 		 */
-		cxl_coordinates_combine(&coord[ACCESS_COORDINATE_LOCAL],
-					&coord[ACCESS_COORDINATE_LOCAL],
+		cxl_coordinates_combine(&coord[ACCESS_COORDINATE_CPU],
+					&coord[ACCESS_COORDINATE_CPU],
 					&dent->coord);
 		dent->entries = 1;
 		rc = cxl_root->ops->qos_class(cxl_root,
-					      &coord[ACCESS_COORDINATE_LOCAL],
+					      &coord[ACCESS_COORDINATE_CPU],
 					      1, &qos_class);
 		if (rc != 1)
 			continue;