drm/i915: Hold struct_mutex for per-file stats in debugfs/i915_gem_object
authorChris Wilson <chris@chris-wilson.co.uk>
Sat, 17 Jun 2017 11:57:44 +0000 (12:57 +0100)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 26 Jun 2017 07:53:47 +0000 (09:53 +0200)
commit2c7367626733e27d6f6d9906db7a31ada587566b
treecc5d79d456e4e457b8f378258acc2749796cc7ce
parentd8462d0ad350ccd399899de051060ee562a5e537
drm/i915: Hold struct_mutex for per-file stats in debugfs/i915_gem_object

As we walk the obj->vma_list in per_file_stats(), we need to hold
struct_mutex to prevent alteration of that list.

Fixes: 1d2ac403ae3b ("drm: Protect dev->filelist with its own mutex")
Fixes: c84455b4bacc ("drm/i915: Move debug only per-request pid tracking from request to ctx")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101460
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170617115744.4452-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
(cherry picked from commit 0caf81b5c53d9bd332a95dbcb44db8de0b397a7c)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_debugfs.c