Add online baseline measurement and pmc reset

1 files changed, 25 insertions, 21 deletions

diff --git a/test/kvm.c b/test/kvm.c
index 9632fec..bd538fb 100755
--- a/test/kvm.c
+++ b/test/kvm.c
@@ -188,13 +188,13 @@ kvm_init(size_t ramsize, void *code_start, void *code_stop)
 	if (ret < 0) err(1, "KVM_SET_REGS");
 }
 
-uint16_t *
+cpc_msrmt_t *
 read_counts()
 {
-	uint16_t *counts;
+	cpc_msrmt_t *counts;
 	int ret;
 
-	counts = malloc(64 * sizeof(uint16_t));
+	counts = malloc(64 * sizeof(cpc_msrmt_t));
 	if (!counts) err(1, "malloc");
 	ret = ioctl(kvm_fd, KVM_CPC_READ_COUNTS, counts);
 	if (ret == -1) err(1, "ioctl READ_COUNTS");
@@ -203,7 +203,7 @@ read_counts()
 }
 
 void
-print_counts(uint16_t *counts)
+print_counts(cpc_msrmt_t *counts)
 {
 	int i;
 
@@ -218,15 +218,15 @@ print_counts(uint16_t *counts)
 		if (counts[i] > 0)
 			printf("\x1b[0m");
 	}
-	printf("\n Target Set Count: %d %hu \n", TARGET_SET, counts[TARGET_SET]);
+	printf("\n Target Set Count: %d %llu \n", TARGET_SET, counts[TARGET_SET]);
 	printf("\n");
 }
 
-uint16_t *
+cpc_msrmt_t *
 collect(const char *prefix, void *code_start, void *code_stop)
 {
 	struct kvm_regs regs;
-	uint16_t *counts;
+	cpc_msrmt_t *counts;
 	int ret;
 
 	/* using cache size for alignment of kvm memory access */
@@ -263,10 +263,10 @@ collect(const char *prefix, void *code_start, void *code_stop)
 int
 main(int argc, const char **argv)
 {
-	uint16_t without_access[SAMPLE_COUNT][64];
-	uint16_t with_access[SAMPLE_COUNT][64];
-	uint16_t *counts, *baseline;
-	uint32_t arg;
+	cpc_msrmt_t without_access[SAMPLE_COUNT][64];
+	cpc_msrmt_t with_access[SAMPLE_COUNT][64];
+	cpc_msrmt_t *counts, *baseline;
+	uint32_t arg, measure;
 	int i, k, ret;
 	
 	setvbuf(stdout, NULL, _IONBF, 0);
@@ -281,25 +281,29 @@ main(int argc, const char **argv)
 	ret = ioctl(kvm_fd, KVM_CPC_INIT_PMC, &arg);
 	if (ret == -1) err(1, "ioctl INIT_PMC");
 
-	baseline = calloc(sizeof(uint16_t), 64);
+	baseline = calloc(sizeof(cpc_msrmt_t), 64);
 	if (!baseline) err(1, "calloc");
-	for (k = 0; k < 64; k++)
-		baseline[k] = UINT16_MAX;
+
+	measure = true;
+	ret = ioctl(kvm_fd, KVM_CPC_MEASURE_BASELINE, &measure);
+	if (ret == -1) err(1, "ioctl MEASURE_BASELINE");
 
 	for (i = 0; i < SAMPLE_COUNT; i++) {
 		counts = collect("without", __start_guest_without, __stop_guest_without);
-		memcpy(without_access[i], counts, 64 * sizeof(uint16_t));
+		memcpy(without_access[i], counts, 64 * sizeof(cpc_msrmt_t));
 		free(counts);
 
 		counts = collect("with", __start_guest_with, __stop_guest_with);
-		memcpy(with_access[i], counts, 64 * sizeof(uint16_t));
+		memcpy(with_access[i], counts, 64 * sizeof(cpc_msrmt_t));
 		free(counts);
-
-		for (k = 0; k < 64; k++) {
-			baseline[k] = MIN(baseline[k], without_access[i][k]);
-			baseline[k] = MIN(baseline[k], with_access[i][k]);
-		}
 	}
+
+	measure = false;
+	ret = ioctl(kvm_fd, KVM_CPC_MEASURE_BASELINE, &measure);
+	if (ret == -1) err(1, "ioctl MEASURE_BASELINE");
+
+	ret = ioctl(kvm_fd, KVM_CPC_READ_BASELINE, baseline);
+	if (ret == -1) err(1, "ioctl READ_BASELINE");
 	
 	for (i = 0; i < SAMPLE_COUNT; i++) {
 		for (k = 0; k < 64; k++) {