)]}'
{
  "log": [
    {
      "commit": "9ec2690758a5467f24beb301cca5098078073bba",
      "tree": "e5bc78f690d12635a56460ea6f54b49318221dc8",
      "parents": [
        "250f972d85effad5b6e10da4bbd877e6a4b503b6"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 20 16:18:50 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Mon May 23 13:59:53 2011 +0200"
      },
      "message": "timerfd: Manage cancelable timers in timerfd\n\nPeter is concerned about the extra scan of CLOCK_REALTIME_COS in the\ntimer interrupt. Yes, I did not think about it, because the solution\nwas so elegant. I didn\u0027t like the extra list in timerfd when it was\nproposed some time ago, but with a rcu based list the list walk it\u0027s\nless horrible than the original global lock, which was held over the\nlist iteration.\n\nRequested-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReviewed-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\n"
    },
    {
      "commit": "99ee5315dac6211e972fa3f23bcc9a0343ff58c4",
      "tree": "6663d6ceaabcb9bac03193e2781cdbe6a139f70c",
      "parents": [
        "b12a03ce4880bd13786a98db6de494a3e0123129"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Wed Apr 27 14:16:42 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Mon May 02 21:39:15 2011 +0200"
      },
      "message": "timerfd: Allow timers to be cancelled when clock was set\n\nSome applications must be aware of clock realtime being set\nbackward. A simple example is a clock applet which arms a timer for\nthe next minute display. If clock realtime is set backward then the\napplet displays a stale time for the amount of time which the clock\nwas set backwards. Due to that applications poll the time because we\ndon\u0027t have an interface.\n\nExtend the timerfd interface by adding a flag which puts the timer\nonto a different internal realtime clock. All timers on this clock are\nexpired whenever the clock was set.\n\nThe timerfd core records the monotonic offset when the timer is\ncreated. When the timer is armed, then the current offset is compared\nto the previous recorded offset. When it has changed, then\ntimerfd_settime returns -ECANCELED. When a timer is read the offset is\ncompared and if it changed -ECANCELED returned to user space. Periodic\ntimers are not rearmed in the cancelation case.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Chris Friesen \u003cchris.friesen@genband.com\u003e\nTested-by: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nCc: \"Kirill A. Shutemov\" \u003ckirill@shutemov.name\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nReviewed-by: Alexander Shishkin \u003cvirtuoso@slind.org\u003e\nLink: http://lkml.kernel.org/r/%3Calpine.LFD.2.02.1104271359580.3323%40ionos%3E\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "610d18f4128ebbd88845d0fc60cce67b49af881e",
      "tree": "97faea373227afc42c4a8f932fb2fe3fd393a258",
      "parents": [
        "ef35ce231b3cb2a4b1808e826da263bf37ccb38a"
      ],
      "author": {
        "name": "Davide Libenzi",
        "email": "davidel@xmailserver.org",
        "time": "Wed Feb 18 14:48:18 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Feb 18 15:37:53 2009 -0800"
      },
      "message": "timerfd: add flags check\n\nAs requested by Michael, add a missing check for valid flags in\ntimerfd_settime(), and make it return EINVAL in case some extra bits are\nset.\n\nMichael said:\nIf this is to be any use to userland apps that want to check flag\nsupport (perhaps it is too late already), then the sooner we get it\ninto the kernel the better: 2.6.29 would be good; earlier stables as\nwell would be even better.\n\n[akpm@linux-foundation.org: remove unused TFD_FLAGS_SET]\nAcked-by: Michael Kerrisk \u003cmtk.manpages@gmail.com\u003e\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.27.x, 2.6.28.x]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6b1ef0e60d42f2fdaec26baee8327eb156347b4f",
      "tree": "84f7e417f0c1f637ed10d42406276cff83849d69",
      "parents": [
        "e7d476dfdf0bcfed478a207aecfdc84f81efecaf"
      ],
      "author": {
        "name": "Ulrich Drepper",
        "email": "drepper@redhat.com",
        "time": "Wed Jul 23 21:29:39 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:29 2008 -0700"
      },
      "message": "flag parameters: NONBLOCK in timerfd_create\n\nThis patch adds support for the TFD_NONBLOCK flag to timerfd_create.  The\nadditional changes needed are minimal.\n\nThe following test must be adjusted for architectures other than x86 and\nx86-64 and in case the syscall numbers changed.\n\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n#include \u003cfcntl.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003ctime.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003csys/syscall.h\u003e\n\n#ifndef __NR_timerfd_create\n# ifdef __x86_64__\n#  define __NR_timerfd_create 283\n# elif defined __i386__\n#  define __NR_timerfd_create 322\n# else\n#  error \"need __NR_timerfd_create\"\n# endif\n#endif\n\n#define TFD_NONBLOCK O_NONBLOCK\n\nint\nmain (void)\n{\n  int fd \u003d syscall (__NR_timerfd_create, CLOCK_REALTIME, 0);\n  if (fd \u003d\u003d -1)\n    {\n      puts (\"timerfd_create(0) failed\");\n      return 1;\n    }\n  int fl \u003d fcntl (fd, F_GETFL);\n  if (fl \u003d\u003d -1)\n    {\n      puts (\"fcntl failed\");\n      return 1;\n    }\n  if (fl \u0026 O_NONBLOCK)\n    {\n      puts (\"timerfd_create(0) set non-blocking mode\");\n      return 1;\n    }\n  close (fd);\n\n  fd \u003d syscall (__NR_timerfd_create, CLOCK_REALTIME, TFD_NONBLOCK);\n  if (fd \u003d\u003d -1)\n    {\n      puts (\"timerfd_create(TFD_NONBLOCK) failed\");\n      return 1;\n    }\n  fl \u003d fcntl (fd, F_GETFL);\n  if (fl \u003d\u003d -1)\n    {\n      puts (\"fcntl failed\");\n      return 1;\n    }\n  if ((fl \u0026 O_NONBLOCK) \u003d\u003d 0)\n    {\n      puts (\"timerfd_create(TFD_NONBLOCK) set non-blocking mode\");\n      return 1;\n    }\n  close (fd);\n\n  puts (\"OK\");\n\n  return 0;\n}\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nSigned-off-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nAcked-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@googlemail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "11fcb6c14676023d0bd437841f5dcd670e7990a0",
      "tree": "7b98614739715734d9cdd74f94982e110c953fc0",
      "parents": [
        "b087498eb5605673b0f260a7620d91818cd72304"
      ],
      "author": {
        "name": "Ulrich Drepper",
        "email": "drepper@redhat.com",
        "time": "Wed Jul 23 21:29:26 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:27 2008 -0700"
      },
      "message": "flag parameters: timerfd_create\n\nThe timerfd_create syscall already has a flags parameter.  It just is\nunused so far.  This patch changes this by introducing the TFD_CLOEXEC\nflag to set the close-on-exec flag for the returned file descriptor.\n\nA new name TFD_CLOEXEC is introduced which in this implementation must\nhave the same value as O_CLOEXEC.\n\nThe following test must be adjusted for architectures other than x86 and\nx86-64 and in case the syscall numbers changed.\n\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n#include \u003cfcntl.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003ctime.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003csys/syscall.h\u003e\n\n#ifndef __NR_timerfd_create\n# ifdef __x86_64__\n#  define __NR_timerfd_create 283\n# elif defined __i386__\n#  define __NR_timerfd_create 322\n# else\n#  error \"need __NR_timerfd_create\"\n# endif\n#endif\n\n#define TFD_CLOEXEC O_CLOEXEC\n\nint\nmain (void)\n{\n  int fd \u003d syscall (__NR_timerfd_create, CLOCK_REALTIME, 0);\n  if (fd \u003d\u003d -1)\n    {\n      puts (\"timerfd_create(0) failed\");\n      return 1;\n    }\n  int coe \u003d fcntl (fd, F_GETFD);\n  if (coe \u003d\u003d -1)\n    {\n      puts (\"fcntl failed\");\n      return 1;\n    }\n  if (coe \u0026 FD_CLOEXEC)\n    {\n      puts (\"timerfd_create(0) set close-on-exec flag\");\n      return 1;\n    }\n  close (fd);\n\n  fd \u003d syscall (__NR_timerfd_create, CLOCK_REALTIME, TFD_CLOEXEC);\n  if (fd \u003d\u003d -1)\n    {\n      puts (\"timerfd_create(TFD_CLOEXEC) failed\");\n      return 1;\n    }\n  coe \u003d fcntl (fd, F_GETFD);\n  if (coe \u003d\u003d -1)\n    {\n      puts (\"fcntl failed\");\n      return 1;\n    }\n  if ((coe \u0026 FD_CLOEXEC) \u003d\u003d 0)\n    {\n      puts (\"timerfd_create(TFD_CLOEXEC) set close-on-exec flag\");\n      return 1;\n    }\n  close (fd);\n\n  puts (\"OK\");\n\n  return 0;\n}\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nSigned-off-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nAcked-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@googlemail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b215e283992899650c4271e7385c79e26fb9a88e",
      "tree": "3f950814510422606821f1b0b373d65e4d9ed303",
      "parents": [
        "6d18c9220965b437287c3a7e803725c24992ceac"
      ],
      "author": {
        "name": "Davide Libenzi",
        "email": "davidel@xmailserver.org",
        "time": "Thu May 10 22:23:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri May 11 08:29:36 2007 -0700"
      },
      "message": "signal/timer/event: timerfd core\n\nThis patch introduces a new system call for timers events delivered though\nfile descriptors.  This allows timer event to be used with standard POSIX\npoll(2), select(2) and read(2).  As a consequence of supporting the Linux\nf_op-\u003epoll subsystem, they can be used with epoll(2) too.\n\nThe system call is defined as:\n\nint timerfd(int ufd, int clockid, int flags, const struct itimerspec *utmr);\n\nThe \"ufd\" parameter allows for re-use (re-programming) of an existing timerfd\nw/out going through the close/open cycle (same as signalfd).  If \"ufd\" is -1,\ns new file descriptor will be created, otherwise the existing \"ufd\" will be\nre-programmed.\n\nThe \"clockid\" parameter is either CLOCK_MONOTONIC or CLOCK_REALTIME.  The time\nspecified in the \"utmr-\u003eit_value\" parameter is the expiry time for the timer.\n\nIf the TFD_TIMER_ABSTIME flag is set in \"flags\", this is an absolute time,\notherwise it\u0027s a relative time.\n\nIf the time specified in the \"utmr-\u003eit_interval\" is not zero (.tv_sec \u003d\u003d 0,\ntv_nsec \u003d\u003d 0), this is the period at which the following ticks should be\ngenerated.\n\nThe \"utmr-\u003eit_interval\" should be set to zero if only one tick is requested.\nSetting the \"utmr-\u003eit_value\" to zero will disable the timer, or will create a\ntimerfd without the timer enabled.\n\nThe function returns the new (or same, in case \"ufd\" is a valid timerfd\ndescriptor) file, or -1 in case of error.\n\nAs stated before, the timerfd file descriptor supports poll(2), select(2) and\nepoll(2).  When a timer event happened on the timerfd, a POLLIN mask will be\nreturned.\n\nThe read(2) call can be used, and it will return a u32 variable holding the\nnumber of \"ticks\" that happened on the interface since the last call to\nread(2).  The read(2) call supportes the O_NONBLOCK flag too, and EAGAIN will\nbe returned if no ticks happened.\n\nA quick test program, shows timerfd working correctly on my amd64 box:\n\nhttp://www.xmailserver.org/timerfd-test.c\n\n[akpm@linux-foundation.org: add sys_timerfd to sys_ni.c]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ]
}