<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][DRMTIP] igt@gem_cpu_reloc@forked - timeout - Received signal SIGQUIT" href="https://bugs.freedesktop.org/show_bug.cgi?id=110990#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][DRMTIP] igt@gem_cpu_reloc@forked - timeout - Received signal SIGQUIT" href="https://bugs.freedesktop.org/show_bug.cgi?id=110990">bug 110990</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>Pure postulation, but I expect commit c03467ba40f783ebe756114bb68e13a6b404c03a Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Wed Jul 3 10:17:17 2019 +0100 drm/i915/gem: Free pages before rcu-freeing the object As we have dropped the final reference to the object, we do not need to wait until after the rcu grace period to drop its pages. We still require struct_mutex to completely unbind the object to release the pages, so we still need a free-worker to manage that from process context. By scheduling the release of pages before waiting for the rcu should mean that we are not trapping those pages from beyond the reach of the shrinker. v2: Pass along the request to skip if the vma is busy to the underlying unbind routine, to avoid checking the reservation underneath the i915->mm.obj_lock which may be used from inside irq context. v3: Flip the bit for unbinding while active, for later convenience. Bugzilla: <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - [CI][SHARDS] igt@gem_create@create-clear - dmesg-fail - gem_create: page allocation failure" href="show_bug.cgi?id=111035">https://bugs.freedesktop.org/show_bug.cgi?id=111035</a> Fixes: a93615f900bd ("drm/i915: Throw away the active object retirement complexity") Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Cc: Matthew Auld <<a href="mailto:matthew.auld@intel.com">matthew.auld@intel.com</a>> Reviewed-by: Matthew Auld <<a href="mailto:matthew.auld@intel.com">matthew.auld@intel.com</a>> Link: <a href="https://patchwork.freedesktop.org/patch/msgid/20190703091726.11690-6-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20190703091726.11690-6-chris@chris-wilson.co.uk</a> to help here.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>