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From: Dave Jiang <dave.jiang@intel.com>
To: linux-cxl@vger.kernel.org, linux-acpi@vger.kernel.org
Cc: dan.j.williams@intel.com, ira.weiny@intel.com,
	vishal.l.verma@intel.com, alison.schofield@intel.com,
	Jonathan.Cameron@huawei.com, dave@stgolabs.net,
	rafael@kernel.org, gregkh@linuxfoundation.org
Subject: [PATCH v7 01/12] ACPI: HMAT: Remove register of memory node for generic target
Date: Fri,  8 Mar 2024 14:59:20 -0700	[thread overview]
Message-ID: <20240308220055.2172956-2-dave.jiang@intel.com> (raw)
In-Reply-To: <20240308220055.2172956-1-dave.jiang@intel.com>

For generic targets, there's no reason to call
register_memory_node_under_compute_node() with the access levels that are
only visible to HMAT handling code. Only update the attributes and rename
hmat_register_generic_target_initiators() to hmat_update_generic_target().

The original call path ends up triggering register_memory_node_under_compute_node().
Although the access level would be "3" and not impact any current node arrays, it
introduces unwanted data into the numa node access_coordinate array.

Fixes: a3a3e341f169 ("acpi: numa: Add setting of generic port system locality attributes")
Cc: Rafael J. Wysocki <rafael@kernel.org>
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/acpi/numa/hmat.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
index d6b85f0f6082..a26e7793ec4e 100644
--- a/drivers/acpi/numa/hmat.c
+++ b/drivers/acpi/numa/hmat.c
@@ -770,12 +770,12 @@ static void __hmat_register_target_initiators(struct memory_target *target,
 	}
 }
 
-static void hmat_register_generic_target_initiators(struct memory_target *target)
+static void hmat_update_generic_target(struct memory_target *target)
 {
 	static DECLARE_BITMAP(p_nodes, MAX_NUMNODES);
 
-	__hmat_register_target_initiators(target, p_nodes,
-					  NODE_ACCESS_CLASS_GENPORT_SINK);
+	hmat_update_target_attrs(target, p_nodes,
+				 NODE_ACCESS_CLASS_GENPORT_SINK);
 }
 
 static void hmat_register_target_initiators(struct memory_target *target)
@@ -835,7 +835,7 @@ static void hmat_register_target(struct memory_target *target)
 	 */
 	mutex_lock(&target_lock);
 	if (*(u16 *)target->gen_port_device_handle) {
-		hmat_register_generic_target_initiators(target);
+		hmat_update_generic_target(target);
 		target->registered = true;
 	}
 	mutex_unlock(&target_lock);
-- 
2.44.0


  reply	other threads:[~2024-03-08 22:01 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-08 21:59 [PATCH v7 0/12] cxl: Add support to report region access coordinates to numa nodes Dave Jiang
2024-03-08 21:59 ` Dave Jiang [this message]
2024-03-08 21:59 ` [PATCH v7 02/12] base/node / ACPI: Enumerate node access class for 'struct access_coordinate' Dave Jiang
2024-03-08 21:59 ` [PATCH v7 03/12] ACPI: HMAT: Introduce 2 levels of generic port access class Dave Jiang
2024-03-08 21:59 ` [PATCH v7 04/12] ACPI: HMAT / cxl: Add retrieval of generic port coordinates for both access classes Dave Jiang
2024-03-08 21:59 ` [PATCH v7 05/12] cxl: Split out combine_coordinates() for common shared usage Dave Jiang
2024-03-08 21:59 ` [PATCH v7 06/12] cxl: Split out host bridge access coordinates Dave Jiang
2024-03-08 21:59 ` [PATCH v7 07/12] cxl: Move QoS class to be calculated from the nearest CPU Dave Jiang
2024-03-08 21:59 ` [PATCH v7 08/12] cxl: Set cxlmd->endpoint before adding port device Dave Jiang
2024-03-08 21:59 ` [PATCH v7 09/12] cxl/region: Calculate performance data for a region Dave Jiang
2024-03-08 21:59 ` [PATCH v7 10/12] cxl/region: Add sysfs attribute for locality attributes of CXL regions Dave Jiang
2024-03-08 21:59 ` [PATCH v7 11/12] cxl/region: Add memory hotplug notifier for cxl region Dave Jiang
2024-03-12 20:03   ` Dan Williams
2024-03-08 21:59 ` [PATCH v7 12/12] cxl/region: Deal with numa nodes not enumerated by SRAT Dave Jiang
2024-03-12 21:41   ` Dan Williams

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