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From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Subject: [PATCH 4/5] drm/i915/ttm: Use TTM for system memory
Date: Wed,  2 Jun 2021 19:07:15 +0200	[thread overview]
Message-ID: <20210602170716.280491-5-thomas.hellstrom@linux.intel.com> (raw)
In-Reply-To: <20210602170716.280491-1-thomas.hellstrom@linux.intel.com>

For discrete, use TTM for both cached and WC system memory. That means
we currently rely on the TTM memory accounting / shrinker. For cached
system memory we should consider remaining shmem-backed, which can be
implemented from our ttm_tt_populate calback. We can then also reuse our
own very elaborate shrinker for that memory.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c    | 22 ++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_drv.h            |  3 ---
 drivers/gpu/drm/i915/intel_memory_region.c |  7 ++++++-
 drivers/gpu/drm/i915/intel_memory_region.h |  8 ++++++++
 4 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 8e1c01168c6d..42e89bf43708 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -755,3 +755,25 @@ int __i915_gem_ttm_object_init(struct intel_memory_region *mem,
 	/* i915 wants -ENXIO when out of memory region space. */
 	return (ret == -ENOSPC) ? -ENXIO : ret;
 }
+
+static const struct intel_memory_region_ops ttm_system_region_ops = {
+	.init_object = __i915_gem_ttm_object_init,
+};
+
+struct intel_memory_region *
+i915_gem_ttm_system_setup(struct drm_i915_private *i915,
+			  u16 type, u16 instance)
+{
+	struct intel_memory_region *mr;
+
+	mr = intel_memory_region_create(i915, 0,
+					totalram_pages() << PAGE_SHIFT,
+					PAGE_SIZE, 0,
+					type, instance,
+					&ttm_system_region_ops);
+	if (IS_ERR_OR_NULL(mr))
+		return mr;
+
+	intel_memory_region_set_name(mr, "system-ttm");
+	return mr;
+}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 524aaeb0e842..c6cc16ccce36 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1768,9 +1768,6 @@ void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
 void i915_gem_init_early(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
 
-struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915,
-						 u16 type, u16 instance);
-
 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
 {
 	/*
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index bd27e897d4d0..a42bb36c2aea 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -220,7 +220,12 @@ int intel_memory_regions_hw_probe(struct drm_i915_private *i915)
 		instance = intel_region_map[i].instance;
 		switch (type) {
 		case INTEL_MEMORY_SYSTEM:
-			mem = i915_gem_shmem_setup(i915, type, instance);
+			if (IS_DGFX(i915))
+				mem = i915_gem_ttm_system_setup(i915, type,
+								instance);
+			else
+				mem = i915_gem_shmem_setup(i915, type,
+							   instance);
 			break;
 		case INTEL_MEMORY_STOLEN_LOCAL:
 			mem = i915_gem_stolen_lmem_setup(i915, type, instance);
diff --git a/drivers/gpu/drm/i915/intel_memory_region.h b/drivers/gpu/drm/i915/intel_memory_region.h
index 7b5fa97c0b59..4d084424b55c 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.h
+++ b/drivers/gpu/drm/i915/intel_memory_region.h
@@ -142,4 +142,12 @@ void intel_memory_region_unreserve(struct intel_memory_region *mem);
 int intel_memory_region_reserve(struct intel_memory_region *mem,
 				resource_size_t offset,
 				resource_size_t size);
+
+struct intel_memory_region *
+i915_gem_ttm_system_setup(struct drm_i915_private *i915,
+			  u16 type, u16 instance);
+struct intel_memory_region *
+i915_gem_shmem_setup(struct drm_i915_private *i915,
+		     u16 type, u16 instance);
+
 #endif
-- 
2.31.1


WARNING: multiple messages have this Message-ID
From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Subject: [Intel-gfx] [PATCH 4/5] drm/i915/ttm: Use TTM for system memory
Date: Wed,  2 Jun 2021 19:07:15 +0200	[thread overview]
Message-ID: <20210602170716.280491-5-thomas.hellstrom@linux.intel.com> (raw)
In-Reply-To: <20210602170716.280491-1-thomas.hellstrom@linux.intel.com>

For discrete, use TTM for both cached and WC system memory. That means
we currently rely on the TTM memory accounting / shrinker. For cached
system memory we should consider remaining shmem-backed, which can be
implemented from our ttm_tt_populate calback. We can then also reuse our
own very elaborate shrinker for that memory.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c    | 22 ++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_drv.h            |  3 ---
 drivers/gpu/drm/i915/intel_memory_region.c |  7 ++++++-
 drivers/gpu/drm/i915/intel_memory_region.h |  8 ++++++++
 4 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 8e1c01168c6d..42e89bf43708 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -755,3 +755,25 @@ int __i915_gem_ttm_object_init(struct intel_memory_region *mem,
 	/* i915 wants -ENXIO when out of memory region space. */
 	return (ret == -ENOSPC) ? -ENXIO : ret;
 }
+
+static const struct intel_memory_region_ops ttm_system_region_ops = {
+	.init_object = __i915_gem_ttm_object_init,
+};
+
+struct intel_memory_region *
+i915_gem_ttm_system_setup(struct drm_i915_private *i915,
+			  u16 type, u16 instance)
+{
+	struct intel_memory_region *mr;
+
+	mr = intel_memory_region_create(i915, 0,
+					totalram_pages() << PAGE_SHIFT,
+					PAGE_SIZE, 0,
+					type, instance,
+					&ttm_system_region_ops);
+	if (IS_ERR_OR_NULL(mr))
+		return mr;
+
+	intel_memory_region_set_name(mr, "system-ttm");
+	return mr;
+}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 524aaeb0e842..c6cc16ccce36 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1768,9 +1768,6 @@ void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
 void i915_gem_init_early(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
 
-struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915,
-						 u16 type, u16 instance);
-
 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
 {
 	/*
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index bd27e897d4d0..a42bb36c2aea 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -220,7 +220,12 @@ int intel_memory_regions_hw_probe(struct drm_i915_private *i915)
 		instance = intel_region_map[i].instance;
 		switch (type) {
 		case INTEL_MEMORY_SYSTEM:
-			mem = i915_gem_shmem_setup(i915, type, instance);
+			if (IS_DGFX(i915))
+				mem = i915_gem_ttm_system_setup(i915, type,
+								instance);
+			else
+				mem = i915_gem_shmem_setup(i915, type,
+							   instance);
 			break;
 		case INTEL_MEMORY_STOLEN_LOCAL:
 			mem = i915_gem_stolen_lmem_setup(i915, type, instance);
diff --git a/drivers/gpu/drm/i915/intel_memory_region.h b/drivers/gpu/drm/i915/intel_memory_region.h
index 7b5fa97c0b59..4d084424b55c 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.h
+++ b/drivers/gpu/drm/i915/intel_memory_region.h
@@ -142,4 +142,12 @@ void intel_memory_region_unreserve(struct intel_memory_region *mem);
 int intel_memory_region_reserve(struct intel_memory_region *mem,
 				resource_size_t offset,
 				resource_size_t size);
+
+struct intel_memory_region *
+i915_gem_ttm_system_setup(struct drm_i915_private *i915,
+			  u16 type, u16 instance);
+struct intel_memory_region *
+i915_gem_shmem_setup(struct drm_i915_private *i915,
+		     u16 type, u16 instance);
+
 #endif
-- 
2.31.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  parent reply	other threads:[~2021-06-02 17:08 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02 17:07 [PATCH 0/5] drm/i915: Move system memory to TTM for discrete Thomas Hellström
2021-06-02 17:07 ` [Intel-gfx] " Thomas Hellström
2021-06-02 17:07 ` [PATCH 1/5] drm/i915: Update object placement flags to be mutable Thomas Hellström
2021-06-02 17:07   ` [Intel-gfx] " Thomas Hellström
2021-06-03 11:17   ` Matthew Auld
2021-06-03 11:17     ` Matthew Auld
2021-06-03 14:08     ` Thomas Hellström
2021-06-03 14:08       ` Thomas Hellström
2021-06-02 17:07 ` [PATCH 2/5] drm/i915/ttm: Adjust gem flags and caching settings after a move Thomas Hellström
2021-06-02 17:07   ` [Intel-gfx] " Thomas Hellström
2021-06-03 10:35   ` Matthew Auld
2021-06-03 10:35     ` Matthew Auld
2021-06-03 13:40     ` Thomas Hellström
2021-06-03 13:40       ` Thomas Hellström
2021-06-02 17:07 ` [PATCH 3/5] drm/i915/ttm: Calculate the object placement at get_pages time Thomas Hellström
2021-06-02 17:07   ` [Intel-gfx] " Thomas Hellström
2021-06-03 10:58   ` Matthew Auld
2021-06-03 10:58     ` Matthew Auld
2021-06-02 17:07 ` Thomas Hellström [this message]
2021-06-02 17:07   ` [Intel-gfx] [PATCH 4/5] drm/i915/ttm: Use TTM for system memory Thomas Hellström
2021-06-03  9:48   ` Matthew Auld
2021-06-03  9:48     ` Matthew Auld
2021-06-03 14:27     ` Thomas Hellström
2021-06-03 14:27       ` Thomas Hellström
2021-06-02 17:07 ` [PATCH 5/5] drm/i915/ttm: Implement object migration Thomas Hellström
2021-06-02 17:07   ` [Intel-gfx] " Thomas Hellström
2021-06-02 17:31 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for drm/i915: Move system memory to TTM for discrete Patchwork

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