tools/perf/scripts/python/sctop.py

Source file repositories/reference/linux-study-clean/tools/perf/scripts/python/sctop.py

File Facts

System
Linux kernel
Corpus path
tools/perf/scripts/python/sctop.py
Extension
.py
Size
2183 bytes
Lines
90
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

# system call top
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2
#
# Periodically displays system-wide system call totals, broken down by
# syscall.  If a [comm] arg is specified, only syscalls called by
# [comm] are displayed. If an [interval] arg is specified, the display
# will be refreshed every [interval] seconds.  The default interval is
# 3 seconds.

from __future__ import print_function

import os, sys, time

try:
	import thread
except ImportError:
	import _thread as thread

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 sctop.py [comm] [interval]\n";

for_comm = None
default_interval = 3
interval = default_interval

if len(sys.argv) > 3:
	sys.exit(usage)

if len(sys.argv) > 2:
	for_comm = sys.argv[1]
	interval = int(sys.argv[2])
elif len(sys.argv) > 1:
	try:
		interval = int(sys.argv[1])
	except ValueError:
		for_comm = sys.argv[1]
		interval = default_interval

syscalls = autodict()

def trace_begin():
	thread.start_new_thread(print_syscall_totals, (interval,))
	pass

def raw_syscalls__sys_enter(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	common_callchain, id, args):
	if for_comm is not None:
		if common_comm != for_comm:
			return
	try:
		syscalls[id] += 1
	except TypeError:
		syscalls[id] = 1

def syscalls__sys_enter(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	id, args):
	raw_syscalls__sys_enter(**locals())

def print_syscall_totals(interval):
	while 1:
		clear_term()

Annotation

Implementation Notes