1. 17 Feb, 2016 2 commits
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  3. 12 Feb, 2016 12 commits
  4. 11 Feb, 2016 1 commit
    • David S. Miller's avatar
      Merge branch 'net-mitigate-kmem_free-slowpath' · 3134b9f0
      David S. Miller authored
      Jesper Dangaard Brouer says:
      
      ====================
      net: mitigating kmem_cache free slowpath
      
      This patchset is the first real use-case for kmem_cache bulk _free_.
      The use of bulk _alloc_ is NOT included in this patchset. The full use
      have previously been posted here [1].
      
      The bulk free side have the largest benefit for the network stack
      use-case, because network stack is hitting the kmem_cache/SLUB
      slowpath when freeing SKBs, due to the amount of outstanding SKBs.
      This is solved by using the new API kmem_cache_free_bulk().
      
      Introduce new API napi_consume_skb(), that hides/handles bulk freeing
      for the caller.  The drivers simply need to use this call when freeing
      SKBs in NAPI context, e.g. replacing their calles to dev_kfree_skb() /
      dev_consume_skb_any().
      
      Driver ixgbe is the first user of this new API.
      
      [1] http://thread.gmane.org/gmane.linux.network/384302/focus=397373
      
      
      ====================
      
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3134b9f0