rapl-read: update comment on haswell-ep/pp0

deater · Oct 4, 2017 · 0380427 · 0380427
1 parent e3aedc2
commit 0380427
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/rapl-read/rapl-read.c b/rapl-read/rapl-read.c
@@ -490,6 +490,7 @@ static int rapl_msr(int core, int cpu_model) {
 
 		/* PP0 energy */
 		/* Not available on Knights* */
+		/* Always returns zero on Haswell-EP? */
 		if (pp0_avail) {
 			result=read_msr(fd,MSR_PP0_ENERGY_STATUS);
 			pp0_before[j]=(double)result*cpu_energy_units[j];