New patch to review for coreboot: util/cbmem: accumulate total time for all entries

[Aaron Durbin]

Aaron Durbin ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11202

-gerrit

commit 5863d77dbc0d96b5b523d93084d71fce4c1c6824
Author: Aaron Durbin 
Date:   Thu Aug 6 13:52:08 2015 -0500

util/cbmem: accumulate total time for all entries

Display the total accumulated time using each timestamp
    entry. It purposefully doesn't take into account the first
    timestamp because that can be a platform dependent value
    that may not contribute to the concept of "total".

BUG=None
    BRANCH=None
    TEST=Ran cbmem on glados where TSC doesn't reset to 0 on
         reboots. Clear total value given at end.

Original-Change-Id: Idddb8b88d3aaad11d72c58b18e8fd9fd1447a30e
    Original-Signed-off-by: Aaron Durbin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/291480
    Original-Reviewed-by: Duncan Laurie 
    Original-Trybot-Ready: David James

Change-Id: I79a0954d3b738323aaebb3e05171bcf639e5d977
    Signed-off-by: Aaron Durbin 
---
 util/cbmem/cbmem.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/util/cbmem/cbmem.c b/util/cbmem/cbmem.c
index a11935e..6526384 100644
--- a/util/cbmem/cbmem.c
+++ b/util/cbmem/cbmem.c
@@ -476,10 +476,11 @@ static const struct timestamp_id_to_name {
    { TS_FSP_AFTER_FINALIZE, "returning from FspNotify(ReadyToBoot)" }
 };

-void timestamp_print_entry(uint32_t id, uint64_t stamp, uint64_t prev_stamp)
+uint64_t timestamp_print_entry(uint32_t id, uint64_t stamp, uint64_t prev_stamp)
 {
    int i;
    const char *name;
+	uint64_t step_time;

name = "<unknown>";
    for (i = 0; i < ARRAY_SIZE(timestamp_ids); i++) {
@@ -492,12 +493,15 @@ void timestamp_print_entry(uint32_t id, uint64_t stamp, uint64_t prev_stamp)
    printf("%4d:", id);
    printf("%-50s", name);
    print_norm(arch_convert_raw_ts_entry(stamp));
+	step_time = arch_convert_raw_ts_entry(stamp - prev_stamp);
    if (prev_stamp) {
    	printf(" (");
-		print_norm(arch_convert_raw_ts_entry(stamp - prev_stamp));
+		print_norm(step_time);
    	printf(")");
    }
    printf("\n");
+
+	return step_time;
 }

/* dump the timestamp table */
@@ -507,6 +511,7 @@ static void dump_timestamps(void)
    struct timestamp_table *tst_p;
    size_t size;
    uint64_t prev_stamp;
+	uint64_t total_time;

if (timestamps.tag != LB_TAG_TIMESTAMPS) {
    	fprintf(stderr, "No timestamps found in coreboot table.\n");
@@ -527,16 +532,22 @@ static void dump_timestamps(void)
    timestamp_print_entry(0,  tst_p->base_time, prev_stamp);
    prev_stamp = tst_p->base_time;

+	total_time = 0;
    for (i = 0; i < tst_p->num_entries; i++) {
    	uint64_t stamp;
    	const struct timestamp_entry *tse = &tst_p->entries[i];

/* Make all timestamps absolute. */
    	stamp = tse->entry_stamp + tst_p->base_time;
-		timestamp_print_entry(tse->entry_id, stamp, prev_stamp);
+		total_time += timestamp_print_entry(tse->entry_id,
+							stamp, prev_stamp);
    	prev_stamp = stamp;
    }

+	printf("\nTotal Time: ");
+	print_norm(total_time);
+	printf("\n");
+
    unmap_memory();
 }