All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jason Ekstrand <jason@jlekstrand.net>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
	"kernel test robot" <lkp@intel.com>,
	"Jason Ekstrand" <jason@jlekstrand.net>,
	"Michael J . Ruhl" <michael.j.ruhl@intel.com>
Subject: [PATCH 8/8] drm/i915/gem: Migrate to system at dma-buf attach time (v7)
Date: Fri, 23 Jul 2021 12:21:42 -0500	[thread overview]
Message-ID: <20210723172142.3273510-9-jason@jlekstrand.net> (raw)
In-Reply-To: <20210723172142.3273510-1-jason@jlekstrand.net>

From: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Until we support p2p dma or as a complement to that, migrate data
to system memory at dma-buf attach time if possible.

v2:
- Rebase on dynamic exporter. Update the igt_dmabuf_import_same_driver
  selftest to migrate if we are LMEM capable.
v3:
- Migrate also in the pin() callback.
v4:
- Migrate in attach
v5: (jason)
- Lock around the migration
v6: (jason)
- Move the can_migrate check outside the lock
- Rework the selftests to test more migration conditions.  In
  particular, SMEM, LMEM, and LMEM+SMEM are all checked.
v7: (mauld)
- Misc style nits

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
---
 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c    | 23 ++++-
 .../drm/i915/gem/selftests/i915_gem_dmabuf.c  | 87 ++++++++++++++++++-
 2 files changed, 106 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index 59dc56ae14d6b..afa34111de02e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -164,8 +164,29 @@ static int i915_gem_dmabuf_attach(struct dma_buf *dmabuf,
 				  struct dma_buf_attachment *attach)
 {
 	struct drm_i915_gem_object *obj = dma_buf_to_obj(dmabuf);
+	struct i915_gem_ww_ctx ww;
+	int err;
+
+	if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM))
+		return -EOPNOTSUPP;
+
+	for_i915_gem_ww(&ww, err, true) {
+		err = i915_gem_object_lock(obj, &ww);
+		if (err)
+			continue;
+
+		err = i915_gem_object_migrate(obj, &ww, INTEL_REGION_SMEM);
+		if (err)
+			continue;
 
-	return i915_gem_object_pin_pages_unlocked(obj);
+		err = i915_gem_object_wait_migration(obj, 0);
+		if (err)
+			continue;
+
+		err = i915_gem_object_pin_pages(obj);
+	}
+
+	return err;
 }
 
 static void i915_gem_dmabuf_detach(struct dma_buf *dmabuf,
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index d4ce01e6ee854..ffae7df5e4d7d 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -85,9 +85,63 @@ static int igt_dmabuf_import_self(void *arg)
 	return err;
 }
 
-static int igt_dmabuf_import_same_driver(void *arg)
+static int igt_dmabuf_import_same_driver_lmem(void *arg)
 {
 	struct drm_i915_private *i915 = arg;
+	struct intel_memory_region *lmem = i915->mm.regions[INTEL_REGION_LMEM];
+	struct drm_i915_gem_object *obj;
+	struct drm_gem_object *import;
+	struct dma_buf *dmabuf;
+	int err;
+
+	if (!lmem)
+		return 0;
+
+	force_different_devices = true;
+
+	obj = __i915_gem_object_create_user(i915, PAGE_SIZE, &lmem, 1);
+	if (IS_ERR(obj)) {
+		pr_err("__i915_gem_object_create_user failed with err=%ld\n",
+		       PTR_ERR(dmabuf));
+		err = PTR_ERR(obj);
+		goto out_ret;
+	}
+
+	dmabuf = i915_gem_prime_export(&obj->base, 0);
+	if (IS_ERR(dmabuf)) {
+		pr_err("i915_gem_prime_export failed with err=%ld\n",
+		       PTR_ERR(dmabuf));
+		err = PTR_ERR(dmabuf);
+		goto out;
+	}
+
+	/*
+	 * We expect an import of an LMEM-only object to fail with
+	 * -EOPNOTSUPP because it can't be migrated to SMEM.
+	 */
+	import = i915_gem_prime_import(&i915->drm, dmabuf);
+	if (!IS_ERR(import)) {
+		drm_gem_object_put(import);
+		pr_err("i915_gem_prime_import succeeded when it shouldn't have\n");
+		err = -EINVAL;
+	} else if (PTR_ERR(import) != -EOPNOTSUPP) {
+		pr_err("i915_gem_prime_import failed with the wrong err=%ld\n",
+		       PTR_ERR(import));
+		err = PTR_ERR(import);
+	}
+
+	dma_buf_put(dmabuf);
+out:
+	i915_gem_object_put(obj);
+out_ret:
+	force_different_devices = false;
+	return err;
+}
+
+static int igt_dmabuf_import_same_driver(struct drm_i915_private *i915,
+					 struct intel_memory_region **regions,
+					 unsigned int num_regions)
+{
 	struct drm_i915_gem_object *obj, *import_obj;
 	struct drm_gem_object *import;
 	struct dma_buf *dmabuf;
@@ -97,8 +151,12 @@ static int igt_dmabuf_import_same_driver(void *arg)
 	int err;
 
 	force_different_devices = true;
-	obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
+
+	obj = __i915_gem_object_create_user(i915, PAGE_SIZE,
+					    regions, num_regions);
 	if (IS_ERR(obj)) {
+		pr_err("__i915_gem_object_create_user failed with err=%ld\n",
+		       PTR_ERR(dmabuf));
 		err = PTR_ERR(obj);
 		goto out_ret;
 	}
@@ -180,6 +238,27 @@ static int igt_dmabuf_import_same_driver(void *arg)
 	return err;
 }
 
+static int igt_dmabuf_import_same_driver_smem(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_memory_region *smem = i915->mm.regions[INTEL_REGION_SMEM];
+
+	return igt_dmabuf_import_same_driver(i915, &smem, 1);
+}
+
+static int igt_dmabuf_import_same_driver_lmem_smem(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_memory_region *regions[2];
+
+	if (!i915->mm.regions[INTEL_REGION_LMEM])
+		return 0;
+
+	regions[0] = i915->mm.regions[INTEL_REGION_LMEM];
+	regions[1] = i915->mm.regions[INTEL_REGION_SMEM];
+	return igt_dmabuf_import_same_driver(i915, regions, 2);
+}
+
 static int igt_dmabuf_import(void *arg)
 {
 	struct drm_i915_private *i915 = arg;
@@ -390,7 +469,9 @@ int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
 		SUBTEST(igt_dmabuf_export),
-		SUBTEST(igt_dmabuf_import_same_driver),
+		SUBTEST(igt_dmabuf_import_same_driver_lmem),
+		SUBTEST(igt_dmabuf_import_same_driver_smem),
+		SUBTEST(igt_dmabuf_import_same_driver_lmem_smem),
 	};
 
 	return i915_subtests(tests, i915);
-- 
2.31.1


WARNING: multiple messages have this Message-ID
From: Jason Ekstrand <jason@jlekstrand.net>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Subject: [Intel-gfx] [PATCH 8/8] drm/i915/gem: Migrate to system at dma-buf attach time (v7)
Date: Fri, 23 Jul 2021 12:21:42 -0500	[thread overview]
Message-ID: <20210723172142.3273510-9-jason@jlekstrand.net> (raw)
In-Reply-To: <20210723172142.3273510-1-jason@jlekstrand.net>

From: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Until we support p2p dma or as a complement to that, migrate data
to system memory at dma-buf attach time if possible.

v2:
- Rebase on dynamic exporter. Update the igt_dmabuf_import_same_driver
  selftest to migrate if we are LMEM capable.
v3:
- Migrate also in the pin() callback.
v4:
- Migrate in attach
v5: (jason)
- Lock around the migration
v6: (jason)
- Move the can_migrate check outside the lock
- Rework the selftests to test more migration conditions.  In
  particular, SMEM, LMEM, and LMEM+SMEM are all checked.
v7: (mauld)
- Misc style nits

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
---
 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c    | 23 ++++-
 .../drm/i915/gem/selftests/i915_gem_dmabuf.c  | 87 ++++++++++++++++++-
 2 files changed, 106 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index 59dc56ae14d6b..afa34111de02e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -164,8 +164,29 @@ static int i915_gem_dmabuf_attach(struct dma_buf *dmabuf,
 				  struct dma_buf_attachment *attach)
 {
 	struct drm_i915_gem_object *obj = dma_buf_to_obj(dmabuf);
+	struct i915_gem_ww_ctx ww;
+	int err;
+
+	if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM))
+		return -EOPNOTSUPP;
+
+	for_i915_gem_ww(&ww, err, true) {
+		err = i915_gem_object_lock(obj, &ww);
+		if (err)
+			continue;
+
+		err = i915_gem_object_migrate(obj, &ww, INTEL_REGION_SMEM);
+		if (err)
+			continue;
 
-	return i915_gem_object_pin_pages_unlocked(obj);
+		err = i915_gem_object_wait_migration(obj, 0);
+		if (err)
+			continue;
+
+		err = i915_gem_object_pin_pages(obj);
+	}
+
+	return err;
 }
 
 static void i915_gem_dmabuf_detach(struct dma_buf *dmabuf,
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index d4ce01e6ee854..ffae7df5e4d7d 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -85,9 +85,63 @@ static int igt_dmabuf_import_self(void *arg)
 	return err;
 }
 
-static int igt_dmabuf_import_same_driver(void *arg)
+static int igt_dmabuf_import_same_driver_lmem(void *arg)
 {
 	struct drm_i915_private *i915 = arg;
+	struct intel_memory_region *lmem = i915->mm.regions[INTEL_REGION_LMEM];
+	struct drm_i915_gem_object *obj;
+	struct drm_gem_object *import;
+	struct dma_buf *dmabuf;
+	int err;
+
+	if (!lmem)
+		return 0;
+
+	force_different_devices = true;
+
+	obj = __i915_gem_object_create_user(i915, PAGE_SIZE, &lmem, 1);
+	if (IS_ERR(obj)) {
+		pr_err("__i915_gem_object_create_user failed with err=%ld\n",
+		       PTR_ERR(dmabuf));
+		err = PTR_ERR(obj);
+		goto out_ret;
+	}
+
+	dmabuf = i915_gem_prime_export(&obj->base, 0);
+	if (IS_ERR(dmabuf)) {
+		pr_err("i915_gem_prime_export failed with err=%ld\n",
+		       PTR_ERR(dmabuf));
+		err = PTR_ERR(dmabuf);
+		goto out;
+	}
+
+	/*
+	 * We expect an import of an LMEM-only object to fail with
+	 * -EOPNOTSUPP because it can't be migrated to SMEM.
+	 */
+	import = i915_gem_prime_import(&i915->drm, dmabuf);
+	if (!IS_ERR(import)) {
+		drm_gem_object_put(import);
+		pr_err("i915_gem_prime_import succeeded when it shouldn't have\n");
+		err = -EINVAL;
+	} else if (PTR_ERR(import) != -EOPNOTSUPP) {
+		pr_err("i915_gem_prime_import failed with the wrong err=%ld\n",
+		       PTR_ERR(import));
+		err = PTR_ERR(import);
+	}
+
+	dma_buf_put(dmabuf);
+out:
+	i915_gem_object_put(obj);
+out_ret:
+	force_different_devices = false;
+	return err;
+}
+
+static int igt_dmabuf_import_same_driver(struct drm_i915_private *i915,
+					 struct intel_memory_region **regions,
+					 unsigned int num_regions)
+{
 	struct drm_i915_gem_object *obj, *import_obj;
 	struct drm_gem_object *import;
 	struct dma_buf *dmabuf;
@@ -97,8 +151,12 @@ static int igt_dmabuf_import_same_driver(void *arg)
 	int err;
 
 	force_different_devices = true;
-	obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
+
+	obj = __i915_gem_object_create_user(i915, PAGE_SIZE,
+					    regions, num_regions);
 	if (IS_ERR(obj)) {
+		pr_err("__i915_gem_object_create_user failed with err=%ld\n",
+		       PTR_ERR(dmabuf));
 		err = PTR_ERR(obj);
 		goto out_ret;
 	}
@@ -180,6 +238,27 @@ static int igt_dmabuf_import_same_driver(void *arg)
 	return err;
 }
 
+static int igt_dmabuf_import_same_driver_smem(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_memory_region *smem = i915->mm.regions[INTEL_REGION_SMEM];
+
+	return igt_dmabuf_import_same_driver(i915, &smem, 1);
+}
+
+static int igt_dmabuf_import_same_driver_lmem_smem(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_memory_region *regions[2];
+
+	if (!i915->mm.regions[INTEL_REGION_LMEM])
+		return 0;
+
+	regions[0] = i915->mm.regions[INTEL_REGION_LMEM];
+	regions[1] = i915->mm.regions[INTEL_REGION_SMEM];
+	return igt_dmabuf_import_same_driver(i915, regions, 2);
+}
+
 static int igt_dmabuf_import(void *arg)
 {
 	struct drm_i915_private *i915 = arg;
@@ -390,7 +469,9 @@ int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
 		SUBTEST(igt_dmabuf_export),
-		SUBTEST(igt_dmabuf_import_same_driver),
+		SUBTEST(igt_dmabuf_import_same_driver_lmem),
+		SUBTEST(igt_dmabuf_import_same_driver_smem),
+		SUBTEST(igt_dmabuf_import_same_driver_lmem_smem),
 	};
 
 	return i915_subtests(tests, i915);
-- 
2.31.1

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

  parent reply	other threads:[~2021-07-23 17:22 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23 17:21 [PATCH 0/8] drm/i915: Migrate memory to SMEM when imported cross-device (v8) Jason Ekstrand
2021-07-23 17:21 ` [Intel-gfx] " Jason Ekstrand
2021-07-23 17:21 ` [PATCH 1/8] drm/i915/gem: Check object_can_migrate from object_migrate Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-07-23 17:21 ` [PATCH 2/8] drm/i915/gem: Refactor placement setup for i915_gem_object_create* (v2) Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-07-23 17:21 ` [PATCH 3/8] drm/i915/gem: Call i915_gem_flush_free_objects() in i915_gem_dumb_create() Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-07-23 17:21 ` [PATCH 4/8] drm/i915/gem: Unify user object creation (v3) Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-07-23 17:21 ` [PATCH 5/8] drm/i915/gem/ttm: Only call __i915_gem_object_set_pages if needed Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-07-26  8:08   ` Matthew Auld
2021-07-26  8:08     ` Matthew Auld
2021-07-23 17:21 ` [PATCH 6/8] drm/i915/gem: Always call obj->ops->migrate unless can_migrate fails Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-07-26  8:10   ` Matthew Auld
2021-07-26  8:10     ` Matthew Auld
2021-07-23 17:21 ` [PATCH 7/8] drm/i915/gem: Correct the locking and pin pattern for dma-buf (v8) Jason Ekstrand
2021-07-23 17:21   ` [Intel-gfx] " Jason Ekstrand
2021-09-01 10:18   ` Thomas Hellström (Intel)
2021-07-23 17:21 ` Jason Ekstrand [this message]
2021-07-23 17:21   ` [Intel-gfx] [PATCH 8/8] drm/i915/gem: Migrate to system at dma-buf attach time (v7) Jason Ekstrand
2021-07-23 20:47 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Migrate memory to SMEM when imported cross-device (rev4) Patchwork
2021-07-23 20:48 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-07-23 21:17 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-07-24  8:03 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-07-26  8:12 ` [Intel-gfx] [PATCH 0/8] drm/i915: Migrate memory to SMEM when imported cross-device (v8) Matthew Auld
2021-07-26  8:12   ` Matthew Auld
2021-07-26 15:11   ` Jason Ekstrand
2021-07-26 15:11     ` Jason Ekstrand
2021-07-26 15:28     ` Matthew Auld
2021-07-26 15:28       ` Matthew Auld
2021-07-26 15:32       ` Jason Ekstrand
2021-07-26 15:32         ` Jason Ekstrand
2021-07-26 15:56         ` Matthew Auld
2021-07-26 15:56           ` Matthew Auld

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210723172142.3273510-9-jason@jlekstrand.net \
    --to=jason@jlekstrand.net \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=lkp@intel.com \
    --cc=michael.j.ruhl@intel.com \
    --cc=thomas.hellstrom@linux.intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.