pmu: add ihk_mc_perfctr_value function

Change-Id: I88d25586dd470737a3eac4c3a4f1955ae6e41d64
2019-04-09 16:20:33 +09:00
parent 0f434288e1
commit b945367c90
4 changed files with 19 additions and 2 deletions
--- a/arch/arm64/kernel/perfctr.c
+++ b/arch/arm64/kernel/perfctr.c
@ -198,6 +198,14 @@ unsigned long ihk_mc_perfctr_read(int counter)
 	return count;
 }

+unsigned long ihk_mc_perfctr_value(int counter, unsigned long correction)
+{
+	unsigned long count = ihk_mc_perfctr_read(counter) + correction;
+
+	count &= ((1UL << 32) - 1);
+	return count;
+}
+
 int ihk_mc_perfctr_alloc_counter(unsigned int *type, unsigned long *config,
 				 unsigned long pmc_status)
 {