)]}'
{
  "commit": "5aae8a53708025d4e718f0d2e7c2f766779ddc71",
  "tree": "d151e2c29e78248cee620cf5094a15316abd17d2",
  "parents": [
    "f7136c5150c29846d7a1d09109449d96b2f63445"
  ],
  "author": {
    "name": "K.Prasad",
    "email": "prasad@linux.vnet.ibm.com",
    "time": "Tue Jun 15 11:35:19 2010 +0530"
  },
  "committer": {
    "name": "Paul Mackerras",
    "email": "paulus@samba.org",
    "time": "Tue Jun 22 19:40:50 2010 +1000"
  },
  "message": "powerpc, hw_breakpoints: Implement hw_breakpoints for 64-bit server processors\n\nImplement perf-events based hw-breakpoint interfaces for PowerPC\n64-bit server (Book III S) processors.  This allows access to a\ngiven location to be used as an event that can be counted or\nprofiled by the perf_events subsystem.\n\nThis is done using the DABR (data breakpoint register), which can\nalso be used for process debugging via ptrace.  When perf_event\nhw_breakpoint support is configured in, the perf_event subsystem\nmanages the DABR and arbitrates access to it, and ptrace then\ncreates a perf_event when it is requested to set a data breakpoint.\n\n[Adopted suggestions from Paul Mackerras \u003cpaulus@samba.org\u003e to\n- emulate_step() all system-wide breakpoints and single-step only the\n  per-task breakpoints\n- perform arch-specific cleanup before unregistration through\n  arch_unregister_hw_breakpoint()\n]\n\nSigned-off-by: K.Prasad \u003cprasad@linux.vnet.ibm.com\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n",
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