nvc0: add a note about MP counters on GF100/GF110

MP counters on GF100/GF110 (compute capability 2.0) are buggy
because there is a context-switch problem that we need to fix.
Results might be wrong sometimes, be careful!

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_query_hw_sm.c b/src/gallium/drivers/nouveau/nvc0/nvc0_query_hw_sm.c
index 6ab5090f7ffffbdd0fe03860c605510cf8216f6b..44b222e5134b0af0326b00a6296ba596694ae8ec 100644 (file)
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_query_hw_sm.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_query_hw_sm.c
@@ -286,6 +286,11 @@ static const struct nvc0_hw_sm_query_cfg nve4_hw_sm_queries[] =
 #undef _M2B
 
 /* === PERFORMANCE MONITORING COUNTERS for NVC0:NVE4 === */
+/* NOTES:
+ * - MP counters on GF100/GF110 (compute capability 2.0) are buggy
+ *   because there is a context-switch problem that we need to fix.
+ *   Results might be wrong sometimes, be careful!
+ */
 static const char *nvc0_hw_sm_query_names[] =
 {
    /* MP counters */