All of lore.kernel.org
 help / color / mirror / Atom feed
From: Rob Clark <robdclark@gmail.com>
To: dri-devel@lists.freedesktop.org
Cc: Jordan Crouse <jordan@cosmicpenguin.net>,
	Rob Clark <robdclark@chromium.org>,
	Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM
	ADRENO GPU),
	freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM
	ADRENO GPU), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 7/8] drm/msm: Small msm_gem_purge() fix
Date: Mon,  5 Apr 2021 10:45:30 -0700	[thread overview]
Message-ID: <20210405174532.1441497-8-robdclark@gmail.com> (raw)
In-Reply-To: <20210405174532.1441497-1-robdclark@gmail.com>

From: Rob Clark <robdclark@chromium.org>

Shoot down any mmap's *first* before put_pages().  Also add a WARN_ON
that the object is locked (to make it clear that this doesn't race with
msm_gem_fault()) and remove a redundant WARN_ON (since is_purgable()
already covers that case).

Fixes: 68209390f116 ("drm/msm: shrinker support")
Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/msm/msm_gem.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 9ac89951080c..163a1d30b5c9 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -729,14 +729,16 @@ void msm_gem_purge(struct drm_gem_object *obj)
 	struct drm_device *dev = obj->dev;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
+	GEM_WARN_ON(!msm_gem_is_locked(obj));
 	GEM_WARN_ON(!is_purgeable(msm_obj));
-	GEM_WARN_ON(obj->import_attach);
 
 	/* Get rid of any iommu mapping(s): */
 	put_iova_spaces(obj, true);
 
 	msm_gem_vunmap(obj);
 
+	drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping);
+
 	put_pages(obj);
 
 	put_iova_vmas(obj);
@@ -744,7 +746,6 @@ void msm_gem_purge(struct drm_gem_object *obj)
 	msm_obj->madv = __MSM_MADV_PURGED;
 	update_inactive(msm_obj);
 
-	drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping);
 	drm_gem_free_mmap_offset(obj);
 
 	/* Our goal here is to return as much of the memory as
-- 
2.30.2


WARNING: multiple messages have this Message-ID (diff)
From: Rob Clark <robdclark@gmail.com>
To: dri-devel@lists.freedesktop.org
Cc: Rob Clark <robdclark@chromium.org>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU"
	<freedreno@lists.freedesktop.org>,
	David Airlie <airlied@linux.ie>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU"
	<linux-arm-msm@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
	Jordan Crouse <jordan@cosmicpenguin.net>,
	Sean Paul <sean@poorly.run>
Subject: [PATCH 7/8] drm/msm: Small msm_gem_purge() fix
Date: Mon,  5 Apr 2021 10:45:30 -0700	[thread overview]
Message-ID: <20210405174532.1441497-8-robdclark@gmail.com> (raw)
In-Reply-To: <20210405174532.1441497-1-robdclark@gmail.com>

From: Rob Clark <robdclark@chromium.org>

Shoot down any mmap's *first* before put_pages().  Also add a WARN_ON
that the object is locked (to make it clear that this doesn't race with
msm_gem_fault()) and remove a redundant WARN_ON (since is_purgable()
already covers that case).

Fixes: 68209390f116 ("drm/msm: shrinker support")
Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/msm/msm_gem.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 9ac89951080c..163a1d30b5c9 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -729,14 +729,16 @@ void msm_gem_purge(struct drm_gem_object *obj)
 	struct drm_device *dev = obj->dev;
 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
 
+	GEM_WARN_ON(!msm_gem_is_locked(obj));
 	GEM_WARN_ON(!is_purgeable(msm_obj));
-	GEM_WARN_ON(obj->import_attach);
 
 	/* Get rid of any iommu mapping(s): */
 	put_iova_spaces(obj, true);
 
 	msm_gem_vunmap(obj);
 
+	drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping);
+
 	put_pages(obj);
 
 	put_iova_vmas(obj);
@@ -744,7 +746,6 @@ void msm_gem_purge(struct drm_gem_object *obj)
 	msm_obj->madv = __MSM_MADV_PURGED;
 	update_inactive(msm_obj);
 
-	drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping);
 	drm_gem_free_mmap_offset(obj);
 
 	/* Our goal here is to return as much of the memory as
-- 
2.30.2

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  parent reply	other threads:[~2021-04-05 17:42 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-05 17:45 [PATCH 0/8] drm/msm: Swappable GEM objects Rob Clark
2021-04-05 17:45 ` Rob Clark
2021-04-05 17:45 ` [PATCH 1/8] drm/msm: ratelimit GEM related WARN_ON()s Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-05 17:45 ` [PATCH 2/8] drm/msm: Reorganize msm_gem_shrinker_scan() Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-05 17:45 ` [PATCH 3/8] drm/msm: Clear msm_obj->sgt in put_pages() Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-05 17:45 ` [PATCH 4/8] drm/msm: Split iova purge and close Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-05 17:45 ` [PATCH 5/8] drm/msm: Add $debugfs/gem stats on resident objects Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-05 17:45 ` [PATCH 6/8] drm/msm: Track potentially evictable objects Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-05 17:45 ` Rob Clark [this message]
2021-04-05 17:45   ` [PATCH 7/8] drm/msm: Small msm_gem_purge() fix Rob Clark
2021-04-05 17:45 ` [PATCH 8/8] drm/msm: Support evicting GEM objects to swap Rob Clark
2021-04-05 17:45   ` Rob Clark
2021-04-08 11:15 ` [PATCH 0/8] drm/msm: Swappable GEM objects Daniel Vetter
2021-04-08 11:15   ` Daniel Vetter
2021-04-08 15:23   ` Rob Clark
2021-04-08 15:23     ` Rob Clark
2021-04-12 14:28     ` Daniel Vetter
2021-04-12 14:28       ` Daniel Vetter
2021-04-12 15:23       ` Rob Clark
2021-04-12 15:23         ` Rob Clark
2021-04-12 16:36         ` Daniel Vetter
2021-04-12 16:36           ` Daniel Vetter

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=20210405174532.1441497-8-robdclark@gmail.com \
    --to=robdclark@gmail.com \
    --cc=airlied@linux.ie \
    --cc=daniel@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=freedreno@lists.freedesktop.org \
    --cc=jordan@cosmicpenguin.net \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robdclark@chromium.org \
    --cc=sean@poorly.run \
    /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.