From: Mikael Pettersson
Date: Fri May 14 2004 - 09:07:37 EST
Version 2.7.2 of perfctr, the Linux performance
monitoring counters driver, is now available at the usual
This version changes the user/kernel interface from ioctl()s
to syscalls. Requested by Andrew Morton (2.6-mm kernel maintainer).
This breaks compatibility with perfctr-2.6 user-space code,
so don't even think about using this except for testing.
It also only works in the 2.6.6 and 2.6.6-mm2 kernels.
The new user-space syscall() wrappers only work with certain
gcc versions and gcc options: x86 without -fPIC and ppc
with gcc-3.2 work, while x86 with -fPIC, x86_64, and ppc
with gcc-3.4.0 don't. This will be fixed in the next release.
Version 2.7.2, 2004-05-14
- Changes for submission to 2.6.6-mm kernel. Replaced
ioctl() interface by new syscall (by request, not choice).
Eliminated module support and backwards compatibility.
Many other cleanups.
/ Mikael Pettersson
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