)]}'
{
  "log": [
    {
      "commit": "29e37d814188ac8d60f2120583704d3ef6d634b4",
      "tree": "1619796097a7aead2c9bec3ba10a8b84f2643013",
      "parents": [
        "ce5df97be530e4746bf9a4ac14589a1cfdfd8efc"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Thu Nov 17 16:55:56 2011 -0800"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Tue Feb 21 09:06:12 2012 -0800"
      },
      "message": "rcu: Allow nesting of rcu_idle_enter() and rcu_idle_exit()\n\nUse of RCU in the idle loop is incorrect, quite a few instances of\njust that have made their way into mainline, primarily event tracing.\nThe problem with RCU read-side critical sections on CPUs that RCU believes\nto be idle is that RCU is completely ignoring the CPU, along with any\nattempts and RCU read-side critical sections.\n\nThe approaches of eliminating the offending uses and of pushing the\ndefinition of idle down beyond the offending uses have both proved\nimpractical.  The new approach is to encapsulate offending uses of RCU\nwith rcu_idle_exit() and rcu_idle_enter(), but this requires nesting\nfor code that is invoked both during idle and and during normal execution.\nTherefore, this commit modifies rcu_idle_enter() and rcu_idle_exit() to\npermit nesting.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nAcked-by: Deepthi Dharwar \u003cdeepthi@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "ce5df97be530e4746bf9a4ac14589a1cfdfd8efc",
      "tree": "675b725e349992c3ed662009bb2a615c8dddee4d",
      "parents": [
        "3c1b1ce00d2702d6be9b92233822e560f37ea780"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Thu Feb 02 08:26:06 2012 -0800"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Tue Feb 21 09:06:11 2012 -0800"
      },
      "message": "rcu: Remove redundant check for rcu_head misalignment\n\nThere is now an unconditional check for rcu_head misalignment in\n__call_rcu(), so remove the old conditional one in debug_rcu_head_queue().\n\nReported-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "486e259340fc4c60474f2c14703e3b3634bb58ca",
      "tree": "70a58702194588fa0773463523f72c682785d040",
      "parents": [
        "0bb7b59d6e2b8440cd7097097dd4bbfc4d76ed07"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paul.mckenney@linaro.org",
        "time": "Fri Jan 06 14:11:30 2012 -0800"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Tue Feb 21 09:03:25 2012 -0800"
      },
      "message": "rcu: Avoid waking up CPUs having only kfree_rcu() callbacks\n\nWhen CONFIG_RCU_FAST_NO_HZ is enabled, RCU will allow a given CPU to\nenter dyntick-idle mode even if it still has RCU callbacks queued.\nRCU avoids system hangs in this case by scheduling a timer for several\njiffies in the future.  However, if all of the callbacks on that CPU\nare from kfree_rcu(), there is no reason to wake the CPU up, as it is\nnot a problem to defer freeing of memory.\n\nThis commit therefore tracks the number of callbacks on a given CPU\nthat are from kfree_rcu(), and avoids scheduling the timer if all of\na given CPU\u0027s callbacks are from kfree_rcu().\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "4145fa7fbee3ec1e61c52825b146192885d9759f",
      "tree": "58e0767a59bf110acb99da3fb5c1f0f0b5170be8",
      "parents": [
        "9ceae0e248fb553c702d51d5275167d462f4efd2"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paul.mckenney@linaro.org",
        "time": "Mon Oct 31 15:01:54 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Sun Dec 11 10:31:42 2011 -0800"
      },
      "message": "rcu: Deconfuse dynticks entry-exit tracing\n\nThe trace_rcu_dyntick() trace event did not print both the old and\nthe new value of the nesting level, and furthermore printed only\nthe low-order 32 bits of it.  This could result in some confusion\nwhen interpreting trace-event dumps, so this commit prints both\nthe old and the new value, prints the full 64 bits, and also selects\nthe process-entry/exit increment to print nicely in hexadecimal.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n"
    },
    {
      "commit": "d4c08f2ac311a360230eef7e5395b0ec8d8f0670",
      "tree": "06e425b8153e076fbe43b037cf4497ac50afddb7",
      "parents": [
        "965a002b4f1a458c5dcb334ec29f48a0046faa25"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paul.mckenney@linaro.org",
        "time": "Sat Jun 25 06:36:56 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Wed Sep 28 21:38:21 2011 -0700"
      },
      "message": "rcu: Add grace-period, quiescent-state, and call_rcu trace events\n\nAdd trace events to record grace-period start and end, quiescent states,\nCPUs noticing grace-period start and end, grace-period initialization,\ncall_rcu() invocation, tasks blocking in RCU read-side critical sections,\ntasks exiting those same critical sections, force_quiescent_state()\ndetection of dyntick-idle and offline CPUs, CPUs entering and leaving\ndyntick-idle mode (except from NMIs), CPUs coming online and going\noffline, and CPUs being kicked for staying in dyntick-idle mode for too\nlong (as in many weeks, even on 32-bit systems).\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n\nrcu: Add the rcu flavor to callback trace events\n\nThe earlier trace events for registering RCU callbacks and for invoking\nthem did not include the RCU flavor (rcu_bh, rcu_preempt, or rcu_sched).\nThis commit adds the RCU flavor to those trace events.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "e99033c5c160f1f247c665923a66acec693a967c",
      "tree": "c5b0863ad4b673134070872a159055237186f0fe",
      "parents": [
        "300df91ca9358f7f09298eec9503c12b32054ef7"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paul.mckenney@linaro.org",
        "time": "Tue Jun 21 00:13:44 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Wed Sep 28 21:38:14 2011 -0700"
      },
      "message": "rcu: Put names into TINY_RCU structures under RCU_TRACE\n\nIn order to allow event tracing to distinguish between flavors of\nRCU, we need those names in the relevant RCU data structures.  TINY_RCU\nhas avoided them for memory-footprint reasons, so add them only if\nCONFIG_RCU_TRACE\u003dy.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "29c00b4a1d9e277786120032aa8364631820d863",
      "tree": "23bf0c8cdb5268ef92ef9ed007639705e922b1b0",
      "parents": [
        "9d68197c05201d8edc70d58bd1d5dad05d8455e8"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paul.mckenney@linaro.org",
        "time": "Fri Jun 17 15:53:19 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Wed Sep 28 21:38:12 2011 -0700"
      },
      "message": "rcu: Add event-tracing for RCU callback invocation\n\nThere was recently some controversy about the overhead of invoking RCU\ncallbacks.  Add TRACE_EVENT()s to obtain fine-grained timings for the\nstart and stop of a batch of callbacks and also for each callback invoked.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    }
  ]
}