On a pentium M machine I was getting crashes with new libpfm. I tracked the problem down the incorrect initializers. Attached it the simple patch to correctly initialize the field for the static structure.

-Will
Index: lib/pfmlib_i386_p6.c
===================================================================
RCS file: /cvsroot/perfmon2/libpfm/lib/pfmlib_i386_p6.c,v
retrieving revision 1.26
diff -u -r1.26 pfmlib_i386_p6.c
--- lib/pfmlib_i386_p6.c	30 Jul 2008 04:08:06 -0000	1.26
+++ lib/pfmlib_i386_p6.c	12 Aug 2008 03:33:29 -0000
@@ -572,8 +572,7 @@
 	.get_event_counters	= pfm_i386_p6_get_event_counters,
 	.dispatch_events	= pfm_i386_p6_dispatch_events,
 	.pmu_detect		= pfm_i386_p6_detect_pii,
-	.pmu_detect		= pfm_i386_p6_init_pii,
-	.pmu_init		= pfm_i386_p6_init_ppro,
+	.pmu_init		= pfm_i386_p6_init_pii,
 	.get_impl_pmcs		= pfm_i386_p6_get_impl_perfsel,
 	.get_impl_pmds		= pfm_i386_p6_get_impl_perfctr,
 	.get_impl_counters	= pfm_i386_p6_get_impl_counters,
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