# failed system call counts, by pid# (c) 2010, Tom Zanussi <tzanussi@gmail.com># Licensed under the terms of the GNU GPL License version 2## Displays system-wide failed system call totals, broken down by pid.# If a [comm] arg is specified, only syscalls called by [comm] are displayed. from __future__ import print_function import osimport sys sys.path.append(os.environ['PERF_EXEC_PATH'] + \	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace') from perf_trace_context import *from Core import *from Util import * usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n"; for_comm = Nonefor_pid = None if len(sys.argv) > 2:	sys.exit(usage) if len(sys.argv) > 1:	try:		for_pid = int(sys.argv[1])	except:		for_comm = sys.argv[1] syscalls = autodict() def trace_begin():	print("Press control+C to stop and show the summary") def trace_end():	print_error_totals() def raw_syscalls__sys_exit(event_name, context, common_cpu,	common_secs, common_nsecs, common_pid, common_comm,	common_callchain, id, ret):	if (for_comm and common_comm != for_comm) or \	   (for_pid  and common_pid  != for_pid ):		return 	if ret < 0:		try:			syscalls[common_comm][common_pid][id][ret] += 1		except TypeError:			syscalls[common_comm][common_pid][id][ret] = 1 def syscalls__sys_exit(event_name, context, common_cpu,	common_secs, common_nsecs, common_pid, common_comm,	id, ret):	raw_syscalls__sys_exit(**locals()) def print_error_totals():	if for_comm is not None:		print("\nsyscall errors for %s:\n" % (for_comm))	else:		print("\nsyscall errors:\n") 	print("%-30s  %10s" % ("comm [pid]", "count"))	print("%-30s  %10s" % ("------------------------------", "----------")) 	comm_keys = syscalls.keys()	for comm in comm_keys:		pid_keys = syscalls[comm].keys()		for pid in pid_keys:			print("\n%s [%d]" % (comm, pid))			id_keys = syscalls[comm][pid].keys()			for id in id_keys:				print("  syscall: %-16s" % syscall_name(id))				ret_keys = syscalls[comm][pid][id].keys()				for ret, val in sorted(syscalls[comm][pid][id].items(), key = lambda kv: (kv[1], kv[0]), reverse = True):					print("    err = %-20s  %10d" % (strerror(ret), val))