)]}'
{
  "commit": "1f2ea0837dbc263ce2a2512c4e73c83df68a6a55",
  "tree": "8e033c747852671f3d4d2cb0bc677dab9ecfc441",
  "parents": [
    "7460ed2844ffad7141e30271c0c3da8336e66014"
  ],
  "author": {
    "name": "Paul E. McKenney",
    "email": "paulmck@linux.vnet.ibm.com",
    "time": "Fri Feb 16 01:28:22 2007 -0800"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@woody.linux-foundation.org",
    "time": "Fri Feb 16 08:14:00 2007 -0800"
  },
  "message": "[PATCH] posix timers: RCU optimization for clock_gettime()\n\nUse RCU to avoid the need to acquire tasklist_lock in the single-threaded\ncase of clock_gettime().  It still acquires tasklist_lock when for a\n(potentially multithreaded) process.  This change allows realtime\napplications to frequently monitor CPU consumption of individual tasks, as\nrequested (and now deployed) by some off-list users.\n\nThis has been in Ingo Molnar\u0027s -rt patchset since late 2005 with no\nproblems reported, and tests successfully on 2.6.20-rc6, so I believe that\nit is long-since ready for mainline adoption.\n\n[paulmck@linux.vnet.ibm.com: fix exit()/posix_cpu_clock_get() race spotted by Oleg]\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "7c3e1e6dfb5b5eef84f61f6259e764703846d9fd",
      "old_mode": 33188,
      "old_path": "kernel/posix-cpu-timers.c",
      "new_id": "657f77697415b2879c07b85e759e8d19b0880b93",
      "new_mode": 33188,
      "new_path": "kernel/posix-cpu-timers.c"
    }
  ]
}