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Get more informative output from cbmem.py 

This is a cosmetic change which formats timestamp information
retrieved by cbmem.py.

Instead of printing timestamps in a single line, print them one per
line and add time (in us) elapsed since the previous timestamp.

     time base 4149594, total entries 18
     1:56,928
     2:58,851  (1,923)
     3:175,230  (116,378)
     4:175,340  (109)
     8:177,199  (1,859)
     9:214,368  (37,168)
     10:214,450  (81)
     30:214,462  (11)
     40:215,205  (743)
     50:217,180  (1,974)
     60:217,312  (132)
     70:436,984  (219,671)
     75:436,993  (8)
     80:441,424  (4,431)
     90:442,487  (1,062)
     99:553,777  (111,289)
     1000:556,513  (2,736)
     1100:824,621  (268,107)

Change-Id: I0d25cafe766c10377017697e6b206276e1a92992
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/1716
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Vadim Bendebury 2012-08-31 11:15:37 -07:00 committed by Stefan Reinauer
parent f27d36c361
commit 00ba25decb
1 changed files with 6 additions and 0 deletions
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6
util/cbmem/cbmem.py
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@ -136,10 +136,16 @@ def process_timers(base):
print('\ntime base %d, total entries %d' % (header.base_time, header.entr)) print('\ntime base %d, total entries %d' % (header.base_time, header.entr))
clock_freq = get_cpu_freq() clock_freq = get_cpu_freq()
base = base + header.struct_len base = base + header.struct_len
prev_time = 0
for i in range(header.entr): for i in range(header.entr):
timestamp = TimestampEntry(base) timestamp = TimestampEntry(base)
print '%d:%s ' % (timestamp.timer_id, print '%d:%s ' % (timestamp.timer_id,
normalize_timer(timestamp.timer_value, clock_freq)), normalize_timer(timestamp.timer_value, clock_freq)),
if prev_time:
print '(%s)' % normalize_timer(
timestamp.timer_value - prev_time, clock_freq),
prev_time = timestamp.timer_value
print
base = base + timestamp.struct_len base = base + timestamp.struct_len
print print