1. 14 Jun, 2017 1 commit
    • Chris Wilson's avatar
      drm/i915: Encourage our shrinker more when our shmemfs allocations fails · 4846bf0c
      Chris Wilson authored
      Commit 24f8e00a ("drm/i915: Prefer to report ENOMEM rather than
      incur the oom for gfx allocations") made the bold decision to try and
      avoid the oomkiller by reporting -ENOMEM to userspace if our allocation
      failed after attempting to free enough buffer objects. In short, it
      appears we were giving up too easily (even before we start wondering if
      one pass of reclaim is as strong as we would like). Part of the problem
      is that if we only shrink just enough pages for our expected allocation,
      the likelihood of those pages becoming available to us is less than 100%
      To counter-act that we ask for twice the number of pages to be made
      available. Furthermore, we allow the shrinker to pull pages from the
      active list in later passes.
      
      v2: Be a little more cautious in paging out gfx buffers, and leave that
      to a more balanced approach from shrink_slab(). Important when combined
      with "drm/i915: Start writeback from the shrinker" as anything shrunk is
      immediately swapped out and so should be more conservative.
      
      Fixes: 24f8e00a ("drm/i915: Prefer to report ENOMEM rather than incur the oom for gfx allocations")
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
      Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Link: http://patchwork.freedesktop.org/patch/msgid/20170609110350.1767-1-chris@chris-wilson.co.uk
      4846bf0c
  2. 12 Jun, 2017 23 commits
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  4. 08 Jun, 2017 9 commits