1 Apr
2021
1 Apr
'21
3:34 p.m.
Hi,
On Wed, Mar 31, 2021 at 6:24 PM Rob Clark robdclark@gmail.com wrote:
From: Rob Clark robdclark@chromium.org
In normal cases the gem obj lock is acquired first before mm_lock. The exception is iterating the various object lists. In the shrinker path, deadlock is avoided by using msm_gem_trylock() and skipping over objects that cannot be locked. But for debugfs the straightforward thing is to split things out into a separate list of all objects protected by it's own lock.
Fixes: d984457b31c4 ("drm/msm: Add priv->mm_lock to protect active/inactive lists") Signed-off-by: Rob Clark robdclark@chromium.org Tested-by: Douglas Anderson dianders@chromium.org
Reviewed-by: Douglas Anderson dianders@chromium.org