[Intel-gfx] [PATCH v4 1/3] drm/i915: Distinction of memory regions

[Matthew Auld]

From: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>

In preparation for Xe HP multi-tile architecture with multiple memory
regions, we need to be able differentiate multiple instances of device
local-memory.

Note that the region name is just to give it a human friendly
identifier, instead of using class/instance which also uniquely
identifies the region. So far the region name is only for our own
internal debugging in the kernel(like in the selftests), or debugfs
which prints the list of regions, including the regions name.

v2: add commentary for our current region name use

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_gt.c          | 2 ++
 drivers/gpu/drm/i915/gt/intel_region_lmem.c | 2 --
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 35ff68ada4f1..ca76f93bc03d 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -68,6 +68,8 @@ int intel_gt_probe_lmem(struct intel_gt *gt)
 	mem->type = INTEL_MEMORY_LOCAL;
 	mem->instance = 0;
 
+	intel_memory_region_set_name(mem, "local%u", mem->instance);
+
 	GEM_BUG_ON(!HAS_REGION(i915, id));
 	GEM_BUG_ON(i915->mm.regions[id]);
 	i915->mm.regions[id] = mem;
diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index 8c498e96b01d..be6f2c8f5184 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -90,8 +90,6 @@ region_lmem_init(struct intel_memory_region *mem)
 	if (ret)
 		io_mapping_fini(&mem->iomap);
 
-	intel_memory_region_set_name(mem, "local");
-
 	return ret;
 }
 
-- 
2.26.2