client/profilers/lttng/lttng.py - Issue 3554003: Merge remote branch 'cros/upstream' into tempbranch3

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Issue 3554003: Merge remote branch 'cros/upstream' into tempbranch3 (Closed) Base URL: http://git.chromium.org/git/autotest.git

Patch Set: Created 10 years, 2 months ago

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1 """	1 """

2 Trace kernel events with Linux Tracing Toolkit (lttng).	2 Trace kernel events with Linux Tracing Toolkit (lttng).

3 You need to install the lttng patched kernel in order to use the profiler.	3 You need to install the lttng patched kernel in order to use the profiler.

4	4

5 Examples:	5 Examples:

6 job.profilers.add('lttng', tracepoints = None): enable all trace points.	6 job.profilers.add('lttng', tracepoints = None): enable all trace points.

7 job.profilers.add('lttng', tracepoints = []): disable all trace points.	7 job.profilers.add('lttng', tracepoints = []): disable all trace points.

8 job.profilers.add('lttng', tracepoints = ['kernel_arch_syscall_entry',	8 job.profilers.add('lttng', tracepoints = ['kernel_arch_syscall_entry',

9 'kernel_arch_syscall_exit'])	9 'kernel_arch_syscall_exit'])

10 will only trace syscall events.	10 will only trace syscall events.

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26	26

27 class lttng(profiler.profiler):	27 class lttng(profiler.profiler):

28 version = 1	28 version = 1

29	29

30 # http://ltt.polymtl.ca/lttng/ltt-control-0.51-12082008.tar.gz	30 # http://ltt.polymtl.ca/lttng/ltt-control-0.51-12082008.tar.gz

31 def setup(self, tarball='ltt-control-0.51-12082008.tar.gz', **dargs):	31 def setup(self, tarball='ltt-control-0.51-12082008.tar.gz', **dargs):

32 self.tarball = utils.unmap_url(self.bindir, tarball, self.tmpdir)	32 self.tarball = utils.unmap_url(self.bindir, tarball, self.tmpdir)

33 utils.extract_tarball_to_dir(self.tarball, self.srcdir)	33 utils.extract_tarball_to_dir(self.tarball, self.srcdir)

34 os.chdir(self.srcdir)	34 os.chdir(self.srcdir)

35	35

36 utils.system('./configure')	36 utils.configure()

37 utils.system('make')	37 utils.make()

38	38

39	39

40 # tracepoints: list of trace points to enable	40 # tracepoints: list of trace points to enable

41 # outputsize: size limit for lttng output file. -1: no limit.	41 # outputsize: size limit for lttng output file. -1: no limit.

42 def initialize(self, outputsize=1048576, tracepoints=None, **dargs):	42 def initialize(self, outputsize=1048576, tracepoints=None, **dargs):

43 self.job.require_gcc()	43 self.job.require_gcc()

44	44

45 self.tracepoints = tracepoints	45 self.tracepoints = tracepoints

46 self.ltt_bindir = os.path.join(self.srcdir, 'lttctl')	46 self.ltt_bindir = os.path.join(self.srcdir, 'lttctl')

47 self.lttctl = os.path.join(self.ltt_bindir, 'lttctl')	47 self.lttctl = os.path.join(self.ltt_bindir, 'lttctl')

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106 if os.path.isdir(file_path):	106 if os.path.isdir(file_path):

107 continue	107 continue

108 size = os.stat(file_path)[6] # grab file size	108 size = os.stat(file_path)[6] # grab file size

109 if size > self.outputsize:	109 if size > self.outputsize:

110 f = open(file_path, 'r+')	110 f = open(file_path, 'r+')

111 f.truncate(self.outputsize)	111 f.truncate(self.outputsize)

112 f.close()	112 f.close()

113 tarball = os.path.join(test.profdir, 'lttng.tar.bz2')	113 tarball = os.path.join(test.profdir, 'lttng.tar.bz2')

114 utils.system("tar -cvjf %s -C %s %s" % (tarball, test.profdir, 'lttng'))	114 utils.system("tar -cvjf %s -C %s %s" % (tarball, test.profdir, 'lttng'))

115 utils.system('rm -rf ' + self.output)	115 utils.system('rm -rf ' + self.output)

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