linux-kernel - [PATCH v3 6/9] drm/msm: Add memory stats to fdinfo

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Message-Id: <20230501184502.1620335-7-robdclark@gmail.com>
Date:   Mon,  1 May 2023 11:44:52 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     freedreno@...ts.freedesktop.org, Daniel Vetter <daniel@...ll.ch>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Christopher Healy <healych@...zon.com>,
        Emil Velikov <emil.l.velikov@...il.com>,
        Christian König <christian.koenig@....com>,
        Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 6/9] drm/msm: Add memory stats to fdinfo

From: Rob Clark <robdclark@...omium.org>

Use the new helper to export stats about memory usage.

v2: Drop unintended hunk
v3: Rebase

Signed-off-by: Rob Clark <robdclark@...omium.org>
Reviewed-by: Emil Velikov <emil.l.velikov@...il.com>
---
 drivers/gpu/drm/msm/msm_drv.c |  2 ++
 drivers/gpu/drm/msm/msm_gem.c | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 1e941aa77609..81a1371c0307 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1045,20 +1045,22 @@ static const struct drm_ioctl_desc msm_ioctls[] = {
 
 static void msm_show_fdinfo(struct drm_printer *p, struct drm_file *file)
 {
 	struct drm_device *dev = file->minor->dev;
 	struct msm_drm_private *priv = dev->dev_private;
 
 	if (!priv->gpu)
 		return;
 
 	msm_gpu_show_fdinfo(priv->gpu, file->driver_priv, p);
+
+	drm_show_memory_stats(p, file);
 }
 
 static const struct file_operations fops = {
 	.owner = THIS_MODULE,
 	DRM_GEM_FOPS,
 	.show_fdinfo = drm_show_fdinfo,
 };
 
 static const struct drm_driver msm_driver = {
 	.driver_features    = DRIVER_GEM |
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index cd39b9d8abdb..20cfd86d2b32 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -1083,34 +1083,49 @@ int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 		msm_gem_object_set_name(obj, "%s", name);
 
 	ret = drm_gem_handle_create(file, obj, handle);
 
 	/* drop reference from allocate - handle holds it now */
 	drm_gem_object_put(obj);
 
 	return ret;
 }
 
+static enum drm_gem_object_status msm_gem_status(struct drm_gem_object *obj)
+{
+	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+	enum drm_gem_object_status status = 0;
+
+	if (msm_obj->pages)
+		status |= DRM_GEM_OBJECT_RESIDENT;
+
+	if (msm_obj->madv == MSM_MADV_DONTNEED)
+		status |= DRM_GEM_OBJECT_PURGEABLE;
+
+	return status;
+}
+
 static const struct vm_operations_struct vm_ops = {
 	.fault = msm_gem_fault,
 	.open = drm_gem_vm_open,
 	.close = drm_gem_vm_close,
 };
 
 static const struct drm_gem_object_funcs msm_gem_object_funcs = {
 	.free = msm_gem_free_object,
 	.pin = msm_gem_prime_pin,
 	.unpin = msm_gem_prime_unpin,
 	.get_sg_table = msm_gem_prime_get_sg_table,
 	.vmap = msm_gem_prime_vmap,
 	.vunmap = msm_gem_prime_vunmap,
 	.mmap = msm_gem_object_mmap,
+	.status = msm_gem_status,
 	.vm_ops = &vm_ops,
 };
 
 static int msm_gem_new_impl(struct drm_device *dev,
 		uint32_t size, uint32_t flags,
 		struct drm_gem_object **obj)
 {
 	struct msm_drm_private *priv = dev->dev_private;
 	struct msm_gem_object *msm_obj;
 
-- 
2.39.2