Quoting Daniel Vetter (2020-02-04 15:01:46) > This catches the majority of drivers (unfortunately not if we take > users into account, because all the big drivers have at least a > lastclose hook). > > With the prep patches out of the way all drm state is fully protected > and either prevents or can deal with the races from dropping the BKL > around open/close. The only thing left to audit are the various driver > hooks - by keeping the BKL around if any of them are set we have a > very simple cop-out! > > Note that one of the biggest prep pieces to get here was making > dev->open_count atomic, which was done in > > commit 7e13ad896484a0165a68197a2e64091ea28c9602 > Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Date: Fri Jan 24 13:01:07 2020 +0000 > > drm: Avoid drm_global_mutex for simple inc/dec of dev->open_count > > v2: > - Rebase and fix locking in drm_open() (Chris) > - Indentation fix in drm_release > - Typo fix in the commit message (Sam) > > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
