1# system call counts
 2# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
 3# Licensed under the terms of the GNU GPL License version 2
 4#
 5# Displays system-wide system call totals, broken down by syscall.
 6# If a [comm] arg is specified, only syscalls called by [comm] are displayed.
 7
 8from __future__ import print_function
 9
10import os
11import sys
12
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 syscall_name
19
20usage = "perf script -s syscall-counts.py [comm]\n";
21
22for_comm = None
23
24if len(sys.argv) > 2:
25	sys.exit(usage)
26
27if len(sys.argv) > 1:
28	for_comm = sys.argv[1]
29
30syscalls = autodict()
31
32def trace_begin():
33	print("Press control+C to stop and show the summary")
34
35def trace_end():
36	print_syscall_totals()
37
38def raw_syscalls__sys_enter(event_name, context, common_cpu,
39		common_secs, common_nsecs, common_pid, common_comm,
40		common_callchain, id, args):
41	if for_comm is not None:
42		if common_comm != for_comm:
43			return
44	try:
45		syscalls[id] += 1
46	except TypeError:
47		syscalls[id] = 1
48
49def syscalls__sys_enter(event_name, context, common_cpu,
50		common_secs, common_nsecs, common_pid, common_comm, id, args):
51	raw_syscalls__sys_enter(**locals())
52
53def print_syscall_totals():
54	if for_comm is not None:
55		print("\nsyscall events for %s:\n" % (for_comm))
56	else:
57		print("\nsyscall events:\n")
58
59	print("%-40s  %10s" % ("event", "count"))
60	print("%-40s  %10s" % ("----------------------------------------",
61				"-----------"))
62
63	for id, val in sorted(syscalls.items(),
64			key = lambda kv: (kv[1], kv[0]), reverse = True):
65		print("%-40s  %10d" % (syscall_name(id), val))