2007-09-24 Masami Hiramatsu <mhiramat@redhat.com>

2007-09-24  Masami Hiramatsu <mhiramat@redhat.com>

       PR 3916
       * buildrun.cxx (compile_pass): Add new autoconf options for checking
       time related APIs.
       * time.c (stp_time_t): Rename cpufreq to freq.
       (__stp_get_freq): Rename from __stp_estimate_cpufreq. Use tsc_khz or
       cpu_khz if it is available. Use itc_freq on ia64.
       (__stp_ktime_get_real_ts): New function to get current kernel time.
       (__stp_time_timer_callback): Call __stp_ktime_get_real_ts to get
       base time.
       (__stp_init_time): Ditto.
       (__stp_constant_freq): New function to check the processor has
       constant frequency timestamp counter.
       (_stp_kill_time): Don't use the cpufreq notifier if the processor has
       constant frequency timestamp counter.
       (_stp_init_time): Ditto.
       * autoconf-ktime-get-real.c : New file.
       * autoconf-constant-tsc.c: Ditto.
       * autoconf-tsc-khz.c: Ditto.