libpmc: Allow specifying explicit EVENT_xxH events on armv7 and arm64

This is useful for processors where we don't have an event table; in
those cases we default to a Cortex A8 (armv7) or Cortex A53 (arm64) in
order to attempt to provide something useful, but you're then limited to
the counters in those tables, some of which may also not be implemented
(e.g. LD/ST_RETIRED are no longer implemented in more recent cores,
replaced by LD/ST_SPEC).

Adding the raw EVENT_xxH event lists to each table ensures that you can
always request the exact events you want, regardless of what has been
detected or is known.

Reviewed by:	mhorne
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D33805

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/libpmc/libpmc.c b/lib/libpmc/libpmc.c
index bf1b4adfa1d3..ea0539d2225a 100644
--- a/lib/libpmc/libpmc.c
+++ b/lib/libpmc/libpmc.c
@@ -143,29 +143,39 @@ static struct pmc_event_descr soft_event_table[PMC_EV_DYN_COUNT];
 #undef	__PMC_EV_ALIAS
 #define	__PMC_EV_ALIAS(N,CODE) 	{ N, PMC_EV_##CODE },
 
+/*
+ * TODO: Factor out the __PMC_EV_ARMV7/8 list into a single separate table
+ * rather than duplicating for each core.
+ */
+
 static const struct pmc_event_descr cortex_a8_event_table[] = 
 {
 	__PMC_EV_ALIAS_ARMV7_CORTEX_A8()
+	__PMC_EV_ARMV7()
 };
 
 static const struct pmc_event_descr cortex_a9_event_table[] = 
 {
 	__PMC_EV_ALIAS_ARMV7_CORTEX_A9()
+	__PMC_EV_ARMV7()
 };
 
 static const struct pmc_event_descr cortex_a53_event_table[] = 
 {
 	__PMC_EV_ALIAS_ARMV8_CORTEX_A53()
+	__PMC_EV_ARMV8()
 };
 
 static const struct pmc_event_descr cortex_a57_event_table[] = 
 {
 	__PMC_EV_ALIAS_ARMV8_CORTEX_A57()
+	__PMC_EV_ARMV8()
 };
 
 static const struct pmc_event_descr cortex_a76_event_table[] =
 {
 	__PMC_EV_ALIAS_ARMV8_CORTEX_A76()
+	__PMC_EV_ARMV8()
 };
 
 static const struct pmc_event_descr tsc_event_table[] =