)]}'
{
  "log": [
    {
      "commit": "5d0e600d903caa09e790824cc5812f0d97113b23",
      "tree": "a9650a9a77d6aa394e98d766aef67ac14666ccc6",
      "parents": [
        "310adfdd9153f6ae818981a38a48dd2330990d8d"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Feb 13 13:26:24 2007 +0100"
      },
      "committer": {
        "name": "Andi Kleen",
        "email": "andi@basil.nowhere.org",
        "time": "Tue Feb 13 13:26:24 2007 +0100"
      },
      "message": "[PATCH] x86: fix laptop bootup hang in init_acpi()\n\nDuring kernel bootup, a new T60 laptop (CoreDuo, 32-bit) hangs about\n10%-20% of the time in acpi_init():\n\n Calling initcall 0xc055ce1a: topology_init+0x0/0x2f()\n Calling initcall 0xc055d75e: mtrr_init_finialize+0x0/0x2c()\n Calling initcall 0xc05664f3: param_sysfs_init+0x0/0x175()\n Calling initcall 0xc014cb65: pm_sysrq_init+0x0/0x17()\n Calling initcall 0xc0569f99: init_bio+0x0/0xf4()\n Calling initcall 0xc056b865: genhd_device_init+0x0/0x50()\n Calling initcall 0xc056c4bd: fbmem_init+0x0/0x87()\n Calling initcall 0xc056dd74: acpi_init+0x0/0x1ee()\n\nIt\u0027s a hard hang that not even an NMI could punch through!  Frustratingly,\nadding printks or function tracing to the ACPI code made the hangs go away\n...\n\nAfter some time an additional detail emerged: disabling the NMI watchdog\nmade these occasional hangs go away.\n\nSo i spent the better part of today trying to debug this and trying out\nvarious theories when i finally found the likely reason for the hang: if\nacpi_ns_initialize_devices() executes an _INI AML method and an NMI\nhappens to hit that AML execution in the wrong moment, the machine would\nhang.  (my theory is that this must be some sort of chipset setup method\ndoing stores to chipset mmio registers?)\n\nUnfortunately given the characteristics of the hang it was sheer\nimpossible to figure out which of the numerous AML methods is impacted\nby this problem.\n\nAs a workaround i wrote an interface to disable chipset-based NMIs while\nexecuting _INI sections - and indeed this fixed the hang.  I did a\nboot-loop of 100 separate reboots and none hung - while without the patch\nit would hang every 5-10 attempts.  Out of caution i did not touch the\nnmi_watchdog\u003d2 case (it\u0027s not related to the chipset anyway and didnt\nhang).\n\nI implemented this for both x86_64 and i686, tested the i686 laptop both\nwith nmi_watchdog\u003d1 [which triggered the hangs] and nmi_watchdog\u003d2, and\ntested an Athlon64 box with the 64-bit kernel as well. Everything builds\nand works with the patch applied.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Len Brown \u003clenb@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bb81a09e55eaf7e5f798468ab971469b6f66a259",
      "tree": "cf1ed6b0ad75137361228955535044fd4630a57b",
      "parents": [
        "e5e3a0428968dcc1f9318ce1c941a918e99f8b84"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@osdl.org",
        "time": "Thu Dec 07 02:14:01 2006 +0100"
      },
      "committer": {
        "name": "Andi Kleen",
        "email": "andi@basil.nowhere.org",
        "time": "Thu Dec 07 02:14:01 2006 +0100"
      },
      "message": "[PATCH] x86: all cpu backtrace\n\nWhen a spinlock lockup occurs, arrange for the NMI code to emit an all-cpu\nbacktrace, so we get to see which CPU is holding the lock, and where.\n\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\n"
    },
    {
      "commit": "9938406ab6b2558d60c0c7200cc8e12f1ea7104a",
      "tree": "2c0e7f9200253bca62cef833ba5405bdf5032351",
      "parents": [
        "df89a864631f5d840f4873c4c03733b4206e78ea"
      ],
      "author": {
        "name": "Michal Schmidt",
        "email": "xschmi00@stud.feec.vutbr.cz",
        "time": "Fri Sep 29 01:59:03 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 29 09:18:05 2006 -0700"
      },
      "message": "[PATCH] Make touch_nmi_watchdog imply touch_softlockup_watchdog on all archs\n\ntouch_nmi_watchdog() calls touch_softlockup_watchdog() on both\narchitectures that implement it (i386 and x86_64).  On other architectures\nit does nothing at all.  touch_nmi_watchdog() should imply\ntouch_softlockup_watchdog() on all architectures.  Suggested by Andi Kleen.\n\n[heiko.carstens@de.ibm.com: s390 fix]\nSigned-off-by: Michal Schmidt \u003cxschmi00@stud.feec.vutbr.cz\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Michal Schmidt \u003cxschmi00@stud.feec.vutbr.cz\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
      "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d",
      "parents": [],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n"
    }
  ]
}