def PerformStage(self):
buildroot = self._build_root
gs_context = gs.GSContext()
cpv = portage_util.BestVisible(constants.CHROME_CP,
buildroot=buildroot)
version_number = cpv.version
# We need the name of one board that has been setup in this
# builder to find the Chrome ebuild. The chrome ebuild should be
# the same for all the boards, so just use the first one.
# If we don't have any boards, leave the called function to guess.
board = self._boards[0] if self._boards else None
arch_profiles = {}
for arch in afdo.AFDO_ARCH_GENERATORS:
afdo_file = afdo.GetLatestAFDOFile(cpv, arch, buildroot,
gs_context)
if not afdo_file:
raise afdo.MissingAFDOData(
'Could not find appropriate AFDO profile')
state = 'current' if version_number in afdo_file else 'previous'
logging.info('Found %s %s AFDO profile %s', state, arch, afdo_file)
arch_profiles[arch] = afdo_file
# Now update the Chrome ebuild file with the AFDO profiles we found
# for each architecture.
afdo.UpdateChromeEbuildAFDOFile(board, arch_profiles)
def PerformStage(self):
"""Collect a 'perf' profile and convert it into the AFDO format."""
super(AFDODataGenerateStage, self).PerformStage()
board = self._current_board
if not afdo.CanGenerateAFDOData(board):
logging.warning('Board %s cannot generate its own AFDO profile.',
board)
return
arch = self._GetCurrentArch()
buildroot = self._build_root
gs_context = gs.GSContext()
cpv = portage_util.BestVisible(constants.CHROME_CP,
buildroot=buildroot)
afdo_file = None
# Generation of AFDO could fail for different reasons.
# We will ignore the failures and let the master PFQ builder try
# to find an older AFDO profile.
try:
if afdo.WaitForAFDOPerfData(cpv, arch, buildroot, gs_context):
afdo_file = afdo.GenerateAFDOData(cpv, arch, board, buildroot,
gs_context)
assert afdo_file
logging.info('Generated %s AFDO profile %s', arch, afdo_file)
else:
raise afdo.MissingAFDOData(
'Could not find current "perf" profile. '
'Master PFQ builder will try to use stale '
'AFDO profile.')
# Will let system-exiting exceptions through.
except Exception:
logging.PrintBuildbotStepWarnings()
logging.warning('AFDO profile generation failed with exception ',
exc_info=True)
alert_msg = ('Please triage. This will become a fatal error.\n\n'
'arch=%s buildroot=%s\n\nURL=%s' %
(arch, buildroot, self._run.ConstructDashboardURL()))
subject_msg = (
'Failure in generation of AFDO Data for builder %s' %
self._run.config.name)
alerts.SendEmailLog(subject_msg,
afdo.AFDO_ALERT_RECIPIENTS,
server=alerts.SmtpServer(
constants.GOLO_SMTP_SERVER),
message=alert_msg)
# Re-raise whatever exception we got here. This stage will only
# generate a warning but we want to make sure the warning is
# generated.
raise
def PerformStage(self):
buildroot = self._build_root
gs_context = gs.GSContext()
cpv = portage_util.PortageqBestVisible(constants.CHROME_CP,
cwd=buildroot)
# We need the name of one board that has been setup in this
# builder to find the Chrome ebuild. The chrome ebuild should be
# the same for all the boards, so just use the first one.
# If we don't have any boards, leave the called function to guess.
board = self._boards[0] if self._boards else None
profiles = {}
for source, getter in afdo.PROFILE_SOURCES.items():
profile = getter(cpv, source, buildroot, gs_context)
if not profile:
raise afdo.MissingAFDOData(
'Could not find appropriate profile for %s' % source)
logging.info('Found AFDO profile %s for %s', profile, source)
profiles[source] = profile
# Now update the Chrome ebuild file with the AFDO profiles we found
# for each source.
afdo.UpdateChromeEbuildAFDOFile(board, profiles)
def PerformStage(self):
"""Collect a 'perf' profile and convert it into the AFDO format."""
super(AFDODataGenerateStage, self).PerformStage()
board = self._current_board
if not afdo.CanGenerateAFDOData(board):
logging.warning('Board %s cannot generate its own AFDO profile.',
board)
return
arch = self._GetCurrentArch()
buildroot = self._build_root
gs_context = gs.GSContext()
cpv = portage_util.PortageqBestVisible(constants.CHROME_CP,
cwd=buildroot)
afdo_file = None
# We have a mismatch between how we version the perf.data we collect and
# how we version our AFDO profiles.
#
# This mismatch can cause us to generate garbage profiles, so we skip
# profile updates for non-r1 revisions of Chrome.
#
# Going into more detail, a perf.data file looks like:
# chromeos-chrome-amd64-68.0.3440.9.perf.data.bz2
#
# An AFDO profile looks like:
# chromeos-chrome-amd64-68.0.3440.9_rc-r1.afdo.bz2
#
# And an unstripped Chrome looks like:
# chromeos-chrome-amd64-68.0.3440.9_rc-r1.debug.bz2
#
# Notably, the perf.data is lacking the revision number of the Chrome it
# was gathered on. This is problematic, since if there's a rev bump, we'll
# end up using the perf.data collected on Chrome version $N-r1 with a
# Chrome binary built from Chrome version $N-r2, which may have an entirely
# different layout than Chrome version $N-r1.
if cpv.rev != 'r1':
logging.warning(
'Non-r1 version of Chrome detected; skipping AFDO generation')
return
# Generation of AFDO could fail for different reasons.
# We will ignore the failures and let the master PFQ builder try
# to find an older AFDO profile.
try:
if afdo.WaitForAFDOPerfData(cpv, arch, buildroot, gs_context):
afdo_file, uploaded_afdo = afdo.GenerateAFDOData(
cpv, arch, board, buildroot, gs_context)
assert afdo_file
logging.info('Generated %s AFDO profile %s', arch, afdo_file)
# If there's no new profile, merging would only be redoing the last
# merge and uploading nothing.
if not uploaded_afdo:
logging.info('AFDO profile already existed in GS. Quit')
return
merged_file, uploaded_merged = \
afdo.CreateAndUploadMergedAFDOProfile(gs_context, buildroot,
afdo_file)
if merged_file is not None:
logging.info('Generated %s merged AFDO profile %s', arch,
merged_file)
# TODO(gbiv): once there's clarity that merged profiles are working
# (e.g. a week goes by with Android/Linux mostly-happily using them),
# we may want to turn them on for CrOS. Until then, `latest` is always
# the raw AFDO file.
if uploaded_merged and False:
newest_afdo_file = merged_file
else:
newest_afdo_file = afdo_file
afdo.UpdateLatestAFDOProfileInGS(cpv, arch, buildroot,
newest_afdo_file, gs_context)
logging.info('Pointed newest profile at %s', newest_afdo_file)
else:
raise afdo.MissingAFDOData(
'Could not find current "perf" profile. '
'Master PFQ builder will try to use stale '
'AFDO profile.')
# Will let system-exiting exceptions through.
except Exception:
logging.PrintBuildbotStepWarnings()
logging.warning('AFDO profile generation failed with exception ',
exc_info=True)
alert_msg = ('Please triage. This will become a fatal error.\n\n'
'arch=%s buildroot=%s\n\nURL=%s' %
(arch, buildroot, self._run.ConstructDashboardURL()))
subject_msg = (
'Failure in generation of AFDO Data for builder %s' %
self._run.config.name)
alerts.SendEmailLog(subject_msg,
afdo.AFDO_ALERT_RECIPIENTS,
server=alerts.SmtpServer(
constants.GOLO_SMTP_SERVER),
message=alert_msg)
# Re-raise whatever exception we got here. This stage will only
# generate a warning but we want to make sure the warning is
# generated.
raise