To: perfctr-devel@lists.sourceforge.net
Subject: perfctr-2.6.9 released

Version 2.6.9 of perfctr, the Linux performance
monitoring counters driver, is now available at the usual
place: http://www.csd.uu.se/~mikpe/linux/perfctr/2.6/

Note the second item below. If you have an Opteron or
Athlon64 (except the 2.0 GHz 3200+ model I have), then
please enable CONFIG_PERFCTR_INIT_TESTS and email me the
results. The costs seem to be slightly different in 32 and
64-bit modes, so please indicate which mode you're using.

Version 2.6.9, 2004-07-27
- Updated kernel support: 2.4.27-rc3, 2.6.7, 2.6.8-rc2,
  2.4.21-15.0.3 (RHEL3), 2.6.5-7.95 (SuSE).
- x86: enforce -fno-unit-at-a-time with gcc-3.4, to prevent
  kernel crashes due to stack overflow in 2.6 kernels < 2.6.6.
- x86: do sync_core() before rdtsc() in the internal micro-
  benchmarking code, to avoid bogus data on K8 processors.
- x86: prevent stray WRMSR at driver init time, which could
  disable the NMI watchdog or Oprofile.
- x86: prevent inlining from breaking code backpatching mechanism.
- x86: fix CONFIG_X86_LOCAL_APIC=n linkage error in init tests.
- PPC32: fix to allow 7400/7410 to specify MMCR2[THRESHMULT].
- PPC32: add support for generic processors using only the
  timebase register for high-resolution time measurements.

/ Mikael Pettersson