[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.7-152-g29e2616

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.7-152-g29e2616

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- Log -----------------------------------------------------------------
commit 29e2616aeeb82605a6efe1dbc574b499781eafbe
Author: Josh Stone <jistone@redhat.com>
Date:   Wed May 20 14:46:25 2009 -0700

    PR10177: init/kill time in sleepy context only
    
    Previously, _stp_init_time and _stp_kill_time were being called from
    begin/end/error probes, which will run with preemption disabled.  The
    BUG reported on RT kernels showed that cpufreq_unregister_notifier can
    end up sleeping, which violates our preemption block.
    
    This patch moves the init/kill into systemtap_module_init/exit, where it
    is safe to sleep.  The code maintains a new predicate with the define
    STAP_NEED_GETTIMEOFDAY, so we don't still incur any timer overhead if
    it's not used.

-----------------------------------------------------------------------

Summary of changes:
 tapset/timestamp_gtod.stp              |   17 ++---------------
 testsuite/buildok/gtod_init.stp        |   13 +++++++++++++
 testsuite/buildok/gtod_noinit.stp      |   13 +++++++++++++
 testsuite/systemtap.base/gtod_init.exp |   29 -----------------------------
 translate.cxx                          |   14 ++++++++++++++
 5 files changed, 42 insertions(+), 44 deletions(-)
 create mode 100755 testsuite/buildok/gtod_init.stp
 create mode 100755 testsuite/buildok/gtod_noinit.stp
 delete mode 100644 testsuite/systemtap.base/gtod_init.exp


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