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scripts/kvm/kvm_stat: Make constants uppercase

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Constants should be uppercase with separating underscores, as
requested in PEP8. This helps identifying them when reading the code.

Reviewed-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Message-Id: <1452525484-32309-4-git-send-email-frankja@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Janosch Frank 2016-01-11 16:17:33 +01:00 committed by Paolo Bonzini
parent 6590045e5d
commit db3e5d9a22
1 changed files with 32 additions and 32 deletions
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64
scripts/kvm/kvm_stat
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@ -36,7 +36,7 @@ class DebugfsProvider(object):
return int(file(self.base + '/' + key).read()) return int(file(self.base + '/' + key).read())
return dict([(key, val(key)) for key in self._fields]) return dict([(key, val(key)) for key in self._fields])
vmx_exit_reasons = { VMX_EXIT_REASONS = {
0: 'EXCEPTION_NMI', 0: 'EXCEPTION_NMI',
1: 'EXTERNAL_INTERRUPT', 1: 'EXTERNAL_INTERRUPT',
2: 'TRIPLE_FAULT', 2: 'TRIPLE_FAULT',
@ -78,7 +78,7 @@ vmx_exit_reasons = {
58: 'INVPCID', 58: 'INVPCID',
} }
svm_exit_reasons = { SVM_EXIT_REASONS = {
0x000: 'READ_CR0', 0x000: 'READ_CR0',
0x003: 'READ_CR3', 0x003: 'READ_CR3',
0x004: 'READ_CR4', 0x004: 'READ_CR4',
@ -154,7 +154,7 @@ svm_exit_reasons = {
} }
# EC definition of HSR (from arch/arm64/include/asm/kvm_arm.h) # EC definition of HSR (from arch/arm64/include/asm/kvm_arm.h)
aarch64_exit_reasons = { AARCH64_EXIT_REASONS = {
0x00: 'UNKNOWN', 0x00: 'UNKNOWN',
0x01: 'WFI', 0x01: 'WFI',
0x03: 'CP15_32', 0x03: 'CP15_32',
@ -193,7 +193,7 @@ aarch64_exit_reasons = {
} }
# From include/uapi/linux/kvm.h, KVM_EXIT_xxx # From include/uapi/linux/kvm.h, KVM_EXIT_xxx
userspace_exit_reasons = { USERSPACE_EXIT_REASONS = {
0: 'UNKNOWN', 0: 'UNKNOWN',
1: 'EXCEPTION', 1: 'EXCEPTION',
2: 'IO', 2: 'IO',
@ -221,15 +221,15 @@ userspace_exit_reasons = {
24: 'SYSTEM_EVENT', 24: 'SYSTEM_EVENT',
} }
x86_exit_reasons = { X86_EXIT_REASONS = {
'vmx': vmx_exit_reasons, 'vmx': VMX_EXIT_REASONS,
'svm': svm_exit_reasons, 'svm': SVM_EXIT_REASONS,
} }
sc_perf_evt_open = None SC_PERF_EVT_OPEN = None
exit_reasons = None EXIT_REASONS = None
ioctl_numbers = { IOCTL_NUMBERS = {
'SET_FILTER' : 0x40082406, 'SET_FILTER' : 0x40082406,
'ENABLE' : 0x00002400, 'ENABLE' : 0x00002400,
'DISABLE' : 0x00002401, 'DISABLE' : 0x00002401,
@ -238,19 +238,19 @@ ioctl_numbers = {
def x86_init(flag): def x86_init(flag):
globals().update({ globals().update({
'sc_perf_evt_open' : 298, 'SC_PERF_EVT_OPEN' : 298,
'exit_reasons' : x86_exit_reasons[flag], 'EXIT_REASONS' : X86_EXIT_REASONS[flag],
}) })
def s390_init(): def s390_init():
globals().update({ globals().update({
'sc_perf_evt_open' : 331 'SC_PERF_EVT_OPEN' : 331
}) })
def ppc_init(): def ppc_init():
globals().update({ globals().update({
'sc_perf_evt_open' : 319, 'SC_PERF_EVT_OPEN' : 319,
'ioctl_numbers' : { 'IOCTL_NUMBERS' : {
'SET_FILTER' : 0x80002406 | (ctypes.sizeof(ctypes.c_char_p) << 16), 'SET_FILTER' : 0x80002406 | (ctypes.sizeof(ctypes.c_char_p) << 16),
'ENABLE' : 0x20002400, 'ENABLE' : 0x20002400,
'DISABLE' : 0x20002401, 'DISABLE' : 0x20002401,
@ -259,8 +259,8 @@ def ppc_init():
def aarch64_init(): def aarch64_init():
globals().update({ globals().update({
'sc_perf_evt_open' : 241, 'SC_PERF_EVT_OPEN' : 241,
'exit_reasons' : aarch64_exit_reasons, 'EXIT_REASONS' : AARCH64_EXIT_REASONS,
}) })
def detect_platform(): def detect_platform():
@ -274,7 +274,7 @@ def detect_platform():
for line in file('/proc/cpuinfo').readlines(): for line in file('/proc/cpuinfo').readlines():
if line.startswith('flags'): if line.startswith('flags'):
for flag in line.split(): for flag in line.split():
if flag in x86_exit_reasons: if flag in X86_EXIT_REASONS:
x86_init(flag) x86_init(flag)
return return
elif line.startswith('vendor_id'): elif line.startswith('vendor_id'):
@ -298,9 +298,9 @@ def invert(d):
return dict((x[1], x[0]) for x in d.iteritems()) return dict((x[1], x[0]) for x in d.iteritems())
filters = {} filters = {}
filters['kvm_userspace_exit'] = ('reason', invert(userspace_exit_reasons)) filters['kvm_userspace_exit'] = ('reason', invert(USERSPACE_EXIT_REASONS))
if exit_reasons: if EXIT_REASONS:
filters['kvm_exit'] = ('exit_reason', invert(exit_reasons)) filters['kvm_exit'] = ('exit_reason', invert(EXIT_REASONS))
libc = ctypes.CDLL('libc.so.6') libc = ctypes.CDLL('libc.so.6')
syscall = libc.syscall syscall = libc.syscall
@ -321,7 +321,7 @@ class perf_event_attr(ctypes.Structure):
('bp_len', ctypes.c_uint64), ('bp_len', ctypes.c_uint64),
] ]
def _perf_event_open(attr, pid, cpu, group_fd, flags): def _perf_event_open(attr, pid, cpu, group_fd, flags):
return syscall(sc_perf_evt_open, ctypes.pointer(attr), ctypes.c_int(pid), return syscall(SC_PERF_EVT_OPEN, ctypes.pointer(attr), ctypes.c_int(pid),
ctypes.c_int(cpu), ctypes.c_int(group_fd), ctypes.c_int(cpu), ctypes.c_int(group_fd),
ctypes.c_long(flags)) ctypes.c_long(flags))
@ -391,14 +391,14 @@ class Event(object):
err = get_errno()[0] err = get_errno()[0]
raise Exception('perf_event_open failed, errno = ' + err.__str__()) raise Exception('perf_event_open failed, errno = ' + err.__str__())
if filter: if filter:
fcntl.ioctl(fd, ioctl_numbers['SET_FILTER'], filter) fcntl.ioctl(fd, IOCTL_NUMBERS['SET_FILTER'], filter)
self.fd = fd self.fd = fd
def enable(self): def enable(self):
fcntl.ioctl(self.fd, ioctl_numbers['ENABLE'], 0) fcntl.ioctl(self.fd, IOCTL_NUMBERS['ENABLE'], 0)
def disable(self): def disable(self):
fcntl.ioctl(self.fd, ioctl_numbers['DISABLE'], 0) fcntl.ioctl(self.fd, IOCTL_NUMBERS['DISABLE'], 0)
def reset(self): def reset(self):
fcntl.ioctl(self.fd, ioctl_numbers['RESET'], 0) fcntl.ioctl(self.fd, IOCTL_NUMBERS['RESET'], 0)
class TracepointProvider(object): class TracepointProvider(object):
def __init__(self): def __init__(self):
@ -505,8 +505,8 @@ if not os.access('/sys/kernel/debug/kvm', os.F_OK):
print "and ensure the kvm modules are loaded" print "and ensure the kvm modules are loaded"
sys.exit(1) sys.exit(1)
label_width = 40 LABEL_WIDTH = 40
number_width = 10 NUMBER_WIDTH = 10
def tui(screen, stats): def tui(screen, stats):
curses.use_default_colors() curses.use_default_colors()
@ -524,8 +524,8 @@ def tui(screen, stats):
screen.erase() screen.erase()
screen.addstr(0, 0, 'kvm statistics') screen.addstr(0, 0, 'kvm statistics')
screen.addstr(2, 1, 'Event') screen.addstr(2, 1, 'Event')
screen.addstr(2, 1 + label_width + number_width - len('Total'), 'Total') screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH - len('Total'), 'Total')
screen.addstr(2, 1 + label_width + number_width + 8 - len('Current'), 'Current') screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH + 8 - len('Current'), 'Current')
row = 3 row = 3
s = stats.get() s = stats.get()
def sortkey(x): def sortkey(x):
@ -541,9 +541,9 @@ def tui(screen, stats):
break break
col = 1 col = 1
screen.addstr(row, col, key) screen.addstr(row, col, key)
col += label_width col += LABEL_WIDTH
screen.addstr(row, col, '%10d' % (values[0],)) screen.addstr(row, col, '%10d' % (values[0],))
col += number_width col += NUMBER_WIDTH
if values[1] is not None: if values[1] is not None:
screen.addstr(row, col, '%8d' % (values[1] / sleeptime,)) screen.addstr(row, col, '%8d' % (values[1] / sleeptime,))
row += 1 row += 1