diff options
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/kvm/kvm_stat | 150 |
1 files changed, 99 insertions, 51 deletions
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index d7e97e7488..7b1437ca21 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -12,7 +12,7 @@ # the COPYING file in the top-level directory. import curses -import sys, os, time, optparse +import sys, os, time, optparse, ctypes class DebugfsProvider(object): def __init__(self): @@ -141,61 +141,97 @@ svm_exit_reasons = { 0x400: 'NPF', } -s390_exit_reasons = { - 0x000: 'UNKNOWN', - 0x001: 'EXCEPTION', - 0x002: 'IO', - 0x003: 'HYPERCALL', - 0x004: 'DEBUG', - 0x005: 'HLT', - 0x006: 'MMIO', - 0x007: 'IRQ_WINDOW_OPEN', - 0x008: 'SHUTDOWN', - 0x009: 'FAIL_ENTRY', - 0x010: 'INTR', - 0x011: 'SET_TPR', - 0x012: 'TPR_ACCESS', - 0x013: 'S390_SIEIC', - 0x014: 'S390_RESET', - 0x015: 'DCR', - 0x016: 'NMI', - 0x017: 'INTERNAL_ERROR', - 0x018: 'OSI', - 0x019: 'PAPR_HCALL', +# From include/uapi/linux/kvm.h, KVM_EXIT_xxx +userspace_exit_reasons = { + 0: 'UNKNOWN', + 1: 'EXCEPTION', + 2: 'IO', + 3: 'HYPERCALL', + 4: 'DEBUG', + 5: 'HLT', + 6: 'MMIO', + 7: 'IRQ_WINDOW_OPEN', + 8: 'SHUTDOWN', + 9: 'FAIL_ENTRY', + 10: 'INTR', + 11: 'SET_TPR', + 12: 'TPR_ACCESS', + 13: 'S390_SIEIC', + 14: 'S390_RESET', + 15: 'DCR', + 16: 'NMI', + 17: 'INTERNAL_ERROR', + 18: 'OSI', + 19: 'PAPR_HCALL', + 20: 'S390_UCONTROL', + 21: 'WATCHDOG', + 22: 'S390_TSCH', + 23: 'EPR', } -vendor_exit_reasons = { +x86_exit_reasons = { 'vmx': vmx_exit_reasons, 'svm': svm_exit_reasons, - 'IBM/S390': s390_exit_reasons, } -syscall_numbers = { - 'IBM/S390': 331, -} - -sc_perf_evt_open = 298 - +sc_perf_evt_open = None exit_reasons = None -for line in file('/proc/cpuinfo').readlines(): - if line.startswith('flags') or line.startswith('vendor_id'): - for flag in line.split(): - if flag in vendor_exit_reasons: - exit_reasons = vendor_exit_reasons[flag] - if flag in syscall_numbers: - sc_perf_evt_open = syscall_numbers[flag] -filters = { - 'kvm_exit': ('exit_reason', exit_reasons) +ioctl_numbers = { + 'SET_FILTER' : 0x40082406, + 'ENABLE' : 0x00002400, + 'DISABLE' : 0x00002401, } +def x86_init(flag): + globals().update({ + 'sc_perf_evt_open' : 298, + 'exit_reasons' : x86_exit_reasons[flag], + }) + +def s390_init(): + globals().update({ + 'sc_perf_evt_open' : 331 + }) + +def ppc_init(): + globals().update({ + 'sc_perf_evt_open' : 319, + 'ioctl_numbers' : { + 'SET_FILTER' : 0x80002406 | (ctypes.sizeof(ctypes.c_char_p) << 16), + 'ENABLE' : 0x20002400, + 'DISABLE' : 0x20002401, + } + }) + +def detect_platform(): + if os.uname()[4].startswith('ppc'): + ppc_init() + return + + for line in file('/proc/cpuinfo').readlines(): + if line.startswith('flags'): + for flag in line.split(): + if flag in x86_exit_reasons: + x86_init(flag) + return + elif line.startswith('vendor_id'): + for flag in line.split(): + if flag == 'IBM/S390': + s390_init() + return + +detect_platform() + def invert(d): return dict((x[1], x[0]) for x in d.iteritems()) -for f in filters: - filters[f] = (filters[f][0], invert(filters[f][1])) +filters = {} +filters['kvm_userspace_exit'] = ('reason', invert(userspace_exit_reasons)) +if exit_reasons: + filters['kvm_exit'] = ('exit_reason', invert(exit_reasons)) -import ctypes, struct, array +import struct, array libc = ctypes.CDLL('libc.so.6') syscall = libc.syscall @@ -285,14 +321,14 @@ class Event(object): raise Exception('perf_event_open failed') if filter: import fcntl - fcntl.ioctl(fd, 0x40082406, filter) + fcntl.ioctl(fd, ioctl_numbers['SET_FILTER'], filter) self.fd = fd def enable(self): import fcntl - fcntl.ioctl(self.fd, 0x00002400, 0) + fcntl.ioctl(self.fd, ioctl_numbers['ENABLE'], 0) def disable(self): import fcntl - fcntl.ioctl(self.fd, 0x00002401, 0) + fcntl.ioctl(self.fd, ioctl_numbers['DISABLE'], 0) class TracepointProvider(object): def __init__(self): @@ -311,18 +347,30 @@ class TracepointProvider(object): self.select(fields) def fields(self): return self._fields + + def _online_cpus(self): + l = [] + pattern = r'cpu([0-9]+)' + basedir = '/sys/devices/system/cpu' + for entry in os.listdir(basedir): + match = re.match(pattern, entry) + if not match: + continue + path = os.path.join(basedir, entry, 'online') + if os.path.exists(path) and open(path).read().strip() != '1': + continue + l.append(int(match.group(1))) + return l + def _setup(self, _fields): self._fields = _fields - cpure = r'cpu([0-9]+)' - self.cpus = [int(re.match(cpure, x).group(1)) - for x in os.listdir('/sys/devices/system/cpu') - if re.match(cpure, x)] + cpus = self._online_cpus() import resource - nfiles = len(self.cpus) * 1000 + nfiles = len(cpus) * 1000 resource.setrlimit(resource.RLIMIT_NOFILE, (nfiles, nfiles)) events = [] self.group_leaders = [] - for cpu in self.cpus: + for cpu in cpus: group = Group(cpu) for name in _fields: tracepoint = name |