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| author | Rob Clark <robdclark@chromium.org> | 2020-10-23 09:51:14 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2020-11-04 16:00:56 -0800 |
| commit | d984457b31c4c53d2af374d5e78b3eb64debd483 (patch) | |
| tree | 6906b429387b1b6dfa172ea47e67398940b887db /drivers/gpu/drm/msm/msm_debugfs.c | |
| parent | 2a86efb1bf72d25c64de3f2ff529a89e76ce7705 (diff) | |
| download | lwn-d984457b31c4c53d2af374d5e78b3eb64debd483.tar.gz lwn-d984457b31c4c53d2af374d5e78b3eb64debd483.zip | |
drm/msm: Add priv->mm_lock to protect active/inactive lists
Rather than relying on the big dev->struct_mutex hammer, introduce a
more specific lock for protecting the bo lists.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_debugfs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c index ee2e270f464c..64afbed89821 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.c +++ b/drivers/gpu/drm/msm/msm_debugfs.c @@ -112,6 +112,11 @@ static int msm_gem_show(struct drm_device *dev, struct seq_file *m) { struct msm_drm_private *priv = dev->dev_private; struct msm_gpu *gpu = priv->gpu; + int ret; + + ret = mutex_lock_interruptible(&priv->mm_lock); + if (ret) + return ret; if (gpu) { seq_printf(m, "Active Objects (%s):\n", gpu->name); @@ -121,6 +126,8 @@ static int msm_gem_show(struct drm_device *dev, struct seq_file *m) seq_printf(m, "Inactive Objects:\n"); msm_gem_describe_objects(&priv->inactive_list, m); + mutex_unlock(&priv->mm_lock); + return 0; } |