)]}'
{
  "commit": "66eafebc1086014709dc38f52ddcb3d67d9b346c",
  "tree": "10147e635d8d4d15d73cb23baa32a2357570eab0",
  "parents": [
    "222658e08f72cd539d01f3aabdc258c596f487e2"
  ],
  "author": {
    "name": "Liming Wang",
    "email": "liming.wang@windriver.com",
    "time": "Tue Dec 02 10:33:08 2008 +0800"
  },
  "committer": {
    "name": "Ingo Molnar",
    "email": "mingo@elte.hu",
    "time": "Tue Dec 02 09:23:24 2008 +0100"
  },
  "message": "function trace: fix a bug of single thread function trace\n\nImpact: fix \"no output from tracer\" bug caused by ftrace_update_pid_func()\n\nWhen disabling single thread function trace using\n\"echo -1 \u003e set_ftrace_pid\", the normal function trace\nhas to restore to original function, otherwise the normal\nfunction trace will not work well.\n\nWithout this commit, something like below:\n\n\t$ ps |grep 850\n\t  850 root      2556 S    -/bin/sh\n\t$ echo 850 \u003e /debug/tracing/set_ftrace_pid\n\t$ echo function \u003e /debug/tracing/current_tracer\n\t$ echo 1 \u003e /debug/tracing/tracing_enabled\n\t$ sleep 1\n\t$ echo 0 \u003e /debug/tracing/tracing_enabled\n\t$ cat /debug/tracing/trace_pipe |wc -l\n\t59704\n\t$ echo -1 \u003e /debug/tracing/set_ftrace_pid\n\t$ echo 1 \u003e /debug/tracing/tracing_enabled\n\t$ sleep 1\n\t$ echo 0 \u003e /debug/tracing/tracing_enabled\n\t$ more /debug/tracing/trace_pipe\n\t\t\u003c\u003d\u003d\u003d\u003d\u003d\u003d nothing output now!\n\t\t\tit should output trace record.\n\nSigned-off-by: Liming Wang \u003climing.wang@windriver.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "08b536a2614ed62faa562be542f1b3bb67232a00",
      "old_mode": 33188,
      "old_path": "kernel/trace/ftrace.c",
      "new_id": "6d89ab46c6e3777b3c4f57cc1650cace5ac8daa4",
      "new_mode": 33188,
      "new_path": "kernel/trace/ftrace.c"
    }
  ]
}