tools/kvm_stat: full PEP8 compliance (692c7f6d) · Commits · e / devices / android_kernel_oneplus_sm7250

tools/kvm/kvm_stat/kvm_stat

+22 −0

Original line number	Diff line number	Diff line
		@@ -224,6 +224,7 @@ IOCTL_NUMBERS = {
		'RESET': 0x00002403,
		}


		class Arch(object):
		"""Encapsulates global architecture specific data.

		@@ -254,12 +255,14 @@ class Arch(object):
		return ArchX86(SVM_EXIT_REASONS)
		return


		class ArchX86(Arch):
		def __init__(self, exit_reasons):
		self.sc_perf_evt_open = 298
		self.ioctl_numbers = IOCTL_NUMBERS
		self.exit_reasons = exit_reasons


		class ArchPPC(Arch):
		def __init__(self):
		self.sc_perf_evt_open = 319
		@@ -274,12 +277,14 @@ class ArchPPC(Arch):
		self.ioctl_numbers['SET_FILTER'] = 0x80002406 \| char_ptr_size << 16
		self.exit_reasons = {}


		class ArchA64(Arch):
		def __init__(self):
		self.sc_perf_evt_open = 241
		self.ioctl_numbers = IOCTL_NUMBERS
		self.exit_reasons = AARCH64_EXIT_REASONS


		class ArchS390(Arch):
		def __init__(self):
		self.sc_perf_evt_open = 331
		@@ -341,6 +346,7 @@ def get_filters():
		libc = ctypes.CDLL('libc.so.6', use_errno=True)
		syscall = libc.syscall


		class perf_event_attr(ctypes.Structure):
		"""Struct that holds the necessary data to set up a trace event.

		@@ -369,6 +375,7 @@ class perf_event_attr(ctypes.Structure):
		self.size = ctypes.sizeof(self)
		self.read_format = PERF_FORMAT_GROUP


		def perf_event_open(attr, pid, cpu, group_fd, flags):
		"""Wrapper for the sys_perf_evt_open() syscall.

		@@ -394,6 +401,7 @@ PERF_FORMAT_GROUP = 1 << 3
		PATH_DEBUGFS_TRACING = '/sys/kernel/debug/tracing'
		PATH_DEBUGFS_KVM = '/sys/kernel/debug/kvm'


		class Group(object):
		"""Represents a perf event group."""

		@@ -426,6 +434,7 @@ class Group(object):
		struct.unpack(read_format,
		os.read(self.events[0].fd, length))))


		class Event(object):
		"""Represents a performance event and manages its life cycle."""
		def __init__(self, name, group, trace_cpu, trace_pid, trace_point,
		@@ -509,6 +518,7 @@ class Event(object):
		"""Resets the count of the trace event in the kernel."""
		fcntl.ioctl(self.fd, ARCH.ioctl_numbers['RESET'], 0)


		class TracepointProvider(object):
		"""Data provider for the stats class.

		@@ -650,6 +660,7 @@ class TracepointProvider(object):
		ret[name] += val
		return ret


		class DebugfsProvider(object):
		"""Provides data from the files that KVM creates in the kvm debugfs
		folder."""
		@@ -719,6 +730,7 @@ class DebugfsProvider(object):
		except IOError:
		return 0


		class Stats(object):
		"""Manages the data providers and the data they provide.

		@@ -790,6 +802,7 @@ class Stats(object):
		LABEL_WIDTH = 40
		NUMBER_WIDTH = 10


		class Tui(object):
		"""Instruments curses to draw a nice text ui."""
		def __init__(self, stats):
		@@ -859,6 +872,7 @@ class Tui(object):
		len('Current'), 'Current')
		row = 3
		stats = self.stats.get()

		def sortkey(x):
		if stats[x][1]:
		return (-stats[x][1], -stats[x][0])
		@@ -966,6 +980,7 @@ class Tui(object):
		except curses.error:
		continue


		def batch(stats):
		"""Prints statistics in a key, value format."""
		try:
		@@ -978,13 +993,16 @@ def batch(stats):
		except KeyboardInterrupt:
		pass


		def log(stats):
		"""Prints statistics as reiterating key block, multiple value blocks."""
		keys = sorted(stats.get().iterkeys())

		def banner():
		for k in keys:
		print '%s' % k,
		print

		def statline():
		s = stats.get()
		for k in keys:
		@@ -1002,6 +1020,7 @@ def log(stats):
		except KeyboardInterrupt:
		break


		def get_options():
		"""Returns processed program arguments."""
		description_text = """
		@@ -1072,6 +1091,7 @@ Requirements:
		(options, _) = optparser.parse_args(sys.argv)
		return options


		def get_providers(options):
		"""Returns a list of data providers depending on the passed options."""
		providers = []
		@@ -1085,6 +1105,7 @@ def get_providers(options):

		return providers


		def check_access(options):
		"""Exits if the current user can't access all needed directories."""
		if not os.path.exists('/sys/kernel/debug'):
		@@ -1114,6 +1135,7 @@ def check_access(options):

		return options


		def main():
		options = get_options()
		options = check_access(options)