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1# failed system call counts, by pid2# (c) 2010, Tom Zanussi <tzanussi@gmail.com>3# Licensed under the terms of the GNU GPL License version 24#5# Displays system-wide failed system call totals, broken down by pid.6# If a [comm] arg is specified, only syscalls called by [comm] are displayed.7 8from __future__ import print_function9 10import os11import sys12 13sys.path.append(os.environ['PERF_EXEC_PATH'] + \14	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')15 16from perf_trace_context import *17from Core import *18from Util import *19 20usage = "perf script -s syscall-counts-by-pid.py [comm|pid]\n";21 22for_comm = None23for_pid = None24 25if len(sys.argv) > 2:26	sys.exit(usage)27 28if len(sys.argv) > 1:29	try:30		for_pid = int(sys.argv[1])31	except:32		for_comm = sys.argv[1]33 34syscalls = autodict()35 36def trace_begin():37	print("Press control+C to stop and show the summary")38 39def trace_end():40	print_error_totals()41 42def raw_syscalls__sys_exit(event_name, context, common_cpu,43	common_secs, common_nsecs, common_pid, common_comm,44	common_callchain, id, ret):45	if (for_comm and common_comm != for_comm) or \46	   (for_pid  and common_pid  != for_pid ):47		return48 49	if ret < 0:50		try:51			syscalls[common_comm][common_pid][id][ret] += 152		except TypeError:53			syscalls[common_comm][common_pid][id][ret] = 154 55def syscalls__sys_exit(event_name, context, common_cpu,56	common_secs, common_nsecs, common_pid, common_comm,57	id, ret):58	raw_syscalls__sys_exit(**locals())59 60def print_error_totals():61	if for_comm is not None:62		print("\nsyscall errors for %s:\n" % (for_comm))63	else:64		print("\nsyscall errors:\n")65 66	print("%-30s  %10s" % ("comm [pid]", "count"))67	print("%-30s  %10s" % ("------------------------------", "----------"))68 69	comm_keys = syscalls.keys()70	for comm in comm_keys:71		pid_keys = syscalls[comm].keys()72		for pid in pid_keys:73			print("\n%s [%d]" % (comm, pid))74			id_keys = syscalls[comm][pid].keys()75			for id in id_keys:76				print("  syscall: %-16s" % syscall_name(id))77				ret_keys = syscalls[comm][pid][id].keys()78				for ret, val in sorted(syscalls[comm][pid][id].items(), key = lambda kv: (kv[1], kv[0]), reverse = True):79					print("    err = %-20s  %10d" % (strerror(ret), val))80