Commit f3d70720 authored by Ying Huang's avatar Ying Huang Committed by Dave Jiang
Browse files

cxl/region: Simplify cxl_region_nid() 



The node ID of the region can be gotten via resource start address
directly.  This simplifies the implementation of cxl_region_nid().

Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
Suggested-by: default avatarAlison Schofield <alison.schofield@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Bharata B Rao <bharata@amd.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://patch.msgid.link/20240618084639.1419629-4-ying.huang@intel.com


Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
parent 643e8e3e

drivers/cxl/core/region.c

+4 −6
Original line number Diff line number Diff line
@@ -2309,15 +2309,13 @@ static bool cxl_region_update_coordinates(struct cxl_region *cxlr, int nid) 
static int cxl_region_nid(struct cxl_region *cxlr)

{

	struct cxl_region_params *p = &cxlr->params;

	struct cxl_endpoint_decoder *cxled;

	struct cxl_decoder *cxld;

	struct resource *res;



	guard(rwsem_read)(&cxl_region_rwsem);

	cxled = p->targets[0];

	if (!cxled)

	res = p->res;

	if (!res)

		return NUMA_NO_NODE;

	cxld = &cxled->cxld;

	return phys_to_target_node(cxld->hpa_range.start);

	return phys_to_target_node(res->start);

}



static int cxl_region_perf_attrs_callback(struct notifier_block *nb,