)]}'
{
  "commit": "f6d9dd237da400effb265f3554c64413f8a3e7b4",
  "tree": "d06e7ec3385697a638b18c6890c087f0ac8e329b",
  "parents": [
    "f6595f3a9680c86b6332f881a7ae2cbbcfdc8619"
  ],
  "author": {
    "name": "Peter Zijlstra",
    "email": "a.p.zijlstra@chello.nl",
    "time": "Fri Nov 20 22:19:48 2009 +0100"
  },
  "committer": {
    "name": "Ingo Molnar",
    "email": "mingo@elte.hu",
    "time": "Sat Nov 21 14:11:37 2009 +0100"
  },
  "message": "perf: Optimize perf_event_mmap_ctx()\n\nRemove a rcu_read_{,un}lock() pair and a few conditionals.\n\nWe can remove the rcu_read_lock() by increasing the scope of one\nin the calling function.\n\nWe can do away with the system_state check if the machine still\nboots after this patch (seems to be the case).\n\nWe can do away with the list_empty() check because the bare\nlist_for_each_entry_rcu() reduces to that now that we\u0027ve removed\neverything else.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c20091120212508.606459548@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "4deefaace90e962315a45b875d7700ca08ef6b8f",
      "old_mode": 33188,
      "old_path": "kernel/perf_event.c",
      "new_id": "68fbf4ff68883d2bb86c4a2134101d713c359b9f",
      "new_mode": 33188,
      "new_path": "kernel/perf_event.c"
    }
  ]
}