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
8import os
9import sys
10
11sys.path.append(os.environ['PERF_EXEC_PATH'] + \
12	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
13
14from perf_trace_context import *
15from Core import *
16from Util import syscall_name
17
18usage = "perf script -s syscall-counts.py [comm]\n";
19
20for_comm = None
21
22if len(sys.argv) > 2:
23	sys.exit(usage)
24
25if len(sys.argv) > 1:
26	for_comm = sys.argv[1]
27
28syscalls = autodict()
29
30def trace_begin():
31	print "Press control+C to stop and show the summary"
32
33def trace_end():
34	print_syscall_totals()
35
36def raw_syscalls__sys_enter(event_name, context, common_cpu,
37	common_secs, common_nsecs, common_pid, common_comm,
38	id, args):
39	if for_comm is not None:
40		if common_comm != for_comm:
41			return
42	try:
43		syscalls[id] += 1
44	except TypeError:
45		syscalls[id] = 1
46
47def print_syscall_totals():
48    if for_comm is not None:
49	    print "\nsyscall events for %s:\n\n" % (for_comm),
50    else:
51	    print "\nsyscall events:\n\n",
52
53    print "%-40s  %10s\n" % ("event", "count"),
54    print "%-40s  %10s\n" % ("----------------------------------------", \
55                                 "-----------"),
56
57    for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
58				  reverse = True):
59	    print "%-40s  %10d\n" % (syscall_name(id), val),
60