Hello,
I have released a new version of the perfmon base package.
This release is relative to 2.6.15-rc5-git3.
I have also updated the library, libpfm-3.2, to match the kernel
level changes.
This new kernel patch includes several important changes:
- pfm_create_context() interface has changed. The sampling
buffer format argument is now passed explicitly instead
of relying on it being contiguous to pfarg_ctx_t.
- code in perfmon/perfmon.c has been split into 8
different files for improved maintainability. Each
file implements one specific function. Perfmon.c
remains the core.
- fixed several important bugs for i386 and x86_64 for
Intel P4/Xeon (simple counting was returning 0).
- added support for virtual PMD (read/write)
- added notion of read-only PMD
- Split Pentium M/P 6 PMU description in preparation for
Pentium M LBR support
- Added support for reference counting on PMU description
and Sampling buffer modules to avoid panic in case
module is removed while being used.
- On i386/X86_64, added code to handle the NMI watchdog
when it is using the Local APIC. We now use
reserve_lapic_nmi() and release_lapic_nmi().
- various other cleanups and bug fixes
You MUST use libpfm-3.2-051215 with this kernel due to
interface change for pfm_create_context().
As usual, you can download the latest packages from the
SourceForge website at:
http://www.sf.net/projects/perfmon2
I will be posting the patches directly to LKML for
review very shortly.
Enjoy,
--
-Stephane
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