From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
To: "David Airlie" <airlied@gmail.com>,
"Gerd Hoffmann" <kraxel@redhat.com>,
"Gurchetan Singh" <gurchetansingh@chromium.org>,
"Chia-I Wu" <olvaffe@gmail.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Daniel Almeida" <daniel.almeida@collabora.com>,
"Gustavo Padovan" <gustavo.padovan@collabora.com>,
"Daniel Stone" <daniel@fooishbar.org>,
"Tomeu Vizoso" <tomeu.vizoso@collabora.com>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Rob Clark" <robdclark@gmail.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Qiang Yu" <yuq825@gmail.com>,
"Steven Price" <steven.price@arm.com>,
"Alyssa Rosenzweig" <alyssa.rosenzweig@collabora.com>,
"Rob Herring" <robh@kernel.org>, "Sean Paul" <sean@poorly.run>,
"Dmitry Baryshkov" <dmitry.baryshkov@linaro.org>,
"Abhinav Kumar" <quic_abhinavk@quicinc.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
kernel@collabora.com, virtualization@lists.linux-foundation.org
Subject: [PATCH v9 03/11] drm/gem: Add evict() callback to drm_gem_object_funcs
Date: Wed, 23 Nov 2022 05:57:15 +0300 [thread overview]
Message-ID: <20221123025723.695075-4-dmitry.osipenko@collabora.com> (raw)
In-Reply-To: <20221123025723.695075-1-dmitry.osipenko@collabora.com>
Add new common evict() callback to drm_gem_object_funcs and corresponding
drm_gem_object_evict() helper. This is a first step on a way to providing
common GEM-shrinker API for DRM drivers.
Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
drivers/gpu/drm/drm_gem.c | 15 +++++++++++++++
include/drm/drm_gem.h | 12 ++++++++++++
2 files changed, 27 insertions(+)
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 299bca1390aa..c0510b8080d2 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -1458,3 +1458,18 @@ drm_gem_lru_scan(struct drm_gem_lru *lru,
return freed;
}
EXPORT_SYMBOL(drm_gem_lru_scan);
+
+/**
+ * drm_gem_object_evict - helper to evict backing pages for a GEM object
+ * @obj: obj in question
+ */
+bool
+drm_gem_object_evict(struct drm_gem_object *obj)
+{
+ dma_resv_assert_held(obj->resv);
+
+ if (obj->funcs->evict)
+ return obj->funcs->evict(obj);
+
+ return false;
+}
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index b46ade812443..add1371453f0 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -172,6 +172,16 @@ struct drm_gem_object_funcs {
* This is optional but necessary for mmap support.
*/
const struct vm_operations_struct *vm_ops;
+
+ /**
+ * @evict:
+ *
+ * Evicts gem object out from memory. Used by the drm_gem_object_evict()
+ * helper. Returns true on success, false otherwise.
+ *
+ * This callback is optional.
+ */
+ bool (*evict)(struct drm_gem_object *obj);
};
/**
@@ -480,4 +490,6 @@ unsigned long drm_gem_lru_scan(struct drm_gem_lru *lru,
unsigned long *remaining,
bool (*shrink)(struct drm_gem_object *obj));
+bool drm_gem_object_evict(struct drm_gem_object *obj);
+
#endif /* __DRM_GEM_H__ */
--
2.38.1
next prev parent reply other threads:[~2022-11-23 3:00 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-23 2:57 [PATCH v9 00/11] Add generic memory shrinker to VirtIO-GPU and Panfrost DRM drivers Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 01/11] drm/msm/gem: Prevent blocking within shrinker loop Dmitry Osipenko
2022-11-29 16:40 ` Rob Clark
2022-11-23 2:57 ` [PATCH v9 02/11] drm/panfrost: Don't sync rpm suspension after mmu flushing Dmitry Osipenko
2022-11-23 15:59 ` Steven Price
2022-11-23 2:57 ` Dmitry Osipenko [this message]
2022-11-23 15:58 ` [PATCH v9 03/11] drm/gem: Add evict() callback to drm_gem_object_funcs Steven Price
2022-11-23 16:40 ` Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 04/11] drm/shmem: Put booleans in the end of struct drm_gem_shmem_object Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 05/11] drm/shmem: Switch to use drm_* debug helpers Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 06/11] drm/shmem-helper: Don't use vmap_use_count for dma-bufs Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 07/11] drm/shmem-helper: Switch to reservation lock Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 08/11] drm/shmem-helper: Add memory shrinker Dmitry Osipenko
2022-11-23 15:56 ` kernel test robot
2022-11-23 18:08 ` kernel test robot
2022-11-23 2:57 ` [PATCH v9 09/11] drm/gem: Add drm_gem_pin_unlocked() Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 10/11] drm/virtio: Support memory shrinking Dmitry Osipenko
2022-11-23 2:57 ` [PATCH v9 11/11] drm/panfrost: Switch to generic memory shrinker Dmitry Osipenko
2022-11-23 17:03 ` Steven Price
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