From: Lukasz Fiedorowicz <lukasz.fiedorowicz@xxxxxxxxx>
Debugfs i915_gem_object is extended to enable the IGTs to
detect the LMEM's availability and the total size of LMEM.
v2: READ_ONCE is used [Chris]
v3: %pa is used for printing the resource [Chris]
v4: All regions' details added to debugfs [Chris]
v5: Macro for_each_mem_region added
name is initialized at region init [Chris]
Signed-off-by: Lukasz Fiedorowicz <lukasz.fiedorowicz@xxxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Stuart Summers <stuart.summers@xxxxxxxxx>
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 1 +
drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 2 ++
drivers/gpu/drm/i915/i915_debugfs.c | 8 +++++++-
drivers/gpu/drm/i915/intel_memory_region.c | 5 ++++-
drivers/gpu/drm/i915/intel_memory_region.h | 7 +++++++
drivers/gpu/drm/i915/intel_region_lmem.c | 1 +
6 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
index 4d69c3fc3439..76cabd5774b0 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
@@ -593,6 +593,7 @@ static int init_shmem(struct intel_memory_region *mem)
DRM_NOTE("Unable to create a private tmpfs mount, hugepage support will be disabled(%d).\n",
err);
}
+ strcpy(mem->name, "system");
return 0; /* Don't error, we can simply fallback to the kernel mnt */
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index afb08a1704a2..1ef973ba06d3 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -645,6 +645,8 @@ i915_gem_object_create_stolen(struct drm_i915_private *i915,
static int init_stolen(struct intel_memory_region *mem)
{
+ strcpy(mem->name, "stolen");
+
/*
* Initialise stolen early so that we may reserve preallocated
* objects for the BIOS to KMS transition.
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index d28468eaed57..a2e197dce5ec 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -367,6 +367,8 @@ static void print_context_stats(struct seq_file *m,
static int i915_gem_object_info(struct seq_file *m, void *data)
{
struct drm_i915_private *i915 = node_to_i915(m->private);
+ struct intel_memory_region *mr;
+ enum intel_region_id id;
seq_printf(m, "%u shrinkable [%u free] objects, %llu bytes\n",
i915->mm.shrink_count,
@@ -374,7 +376,11 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
i915->mm.shrink_memory);
seq_putc(m, '\n');
-
+ for_each_memory_region(mr, i915, id) {
+ seq_printf(m, "%s total: %pa bytes, available %pa bytes\n",
+ mr->name, &mr->total, &mr->avail);
+ }
+ seq_putc(m, '\n');
print_context_stats(m, i915);
return 0;
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index e24c280e5930..15e539de0a82 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -37,7 +37,7 @@ __intel_memory_region_put_pages_buddy(struct intel_memory_region *mem,
struct list_head *blocks)
{
mutex_lock(&mem->mm_lock);
- intel_memory_region_free_pages(mem, blocks);
+ mem->avail += intel_memory_region_free_pages(mem, blocks);
mutex_unlock(&mem->mm_lock);
}
@@ -106,6 +106,7 @@ __intel_memory_region_get_pages_buddy(struct intel_memory_region *mem,
break;
} while (1);
+ mem->avail -= size;
mutex_unlock(&mem->mm_lock);
return 0;
@@ -164,6 +165,8 @@ intel_memory_region_create(struct drm_i915_private *i915,
mem->io_start = io_start;
mem->min_page_size = min_page_size;
mem->ops = ops;
+ mem->total = size;
+ mem->avail = mem->total;
mutex_init(&mem->objects.lock);
INIT_LIST_HEAD(&mem->objects.list);
diff --git a/drivers/gpu/drm/i915/intel_memory_region.h b/drivers/gpu/drm/i915/intel_memory_region.h
index 238722009677..db1f37c8e738 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.h
+++ b/drivers/gpu/drm/i915/intel_memory_region.h
@@ -47,6 +47,10 @@ enum intel_region_id {
#define I915_ALLOC_MIN_PAGE_SIZE BIT(0)
#define I915_ALLOC_CONTIGUOUS BIT(1)
+#define for_each_memory_region(mr, i915, id) \
+ for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \
+ for_each_if(mr = i915->mm.regions[id])
+
/**
* Memory regions encoded as type | instance
*/
@@ -82,10 +86,13 @@ struct intel_memory_region {
resource_size_t io_start;
resource_size_t min_page_size;
+ resource_size_t total;
+ resource_size_t avail;
unsigned int type;
unsigned int instance;
unsigned int id;
+ char name[8];
dma_addr_t remap_addr;
diff --git a/drivers/gpu/drm/i915/intel_region_lmem.c b/drivers/gpu/drm/i915/intel_region_lmem.c
index eddb392917aa..dddac581f698 100644
--- a/drivers/gpu/drm/i915/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/intel_region_lmem.c
@@ -89,6 +89,7 @@ region_lmem_init(struct intel_memory_region *mem)
ret = intel_memory_region_init_buddy(mem);
if (ret)
io_mapping_fini(&mem->iomap);
+ strcpy(mem->name, "local");
return ret;
}
--
2.20.1
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