Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / scripts / python / sctop.py

diff --git a/kernel/tools/perf/scripts/python/sctop.py b/kernel/tools/perf/scripts/python/sctop.py
new file mode 100644 (file)
index 0000000..61621b9
--- /dev/null
+++ b/kernel/tools/perf/scripts/python/sctop.py
@@ -0,0 +1,80 @@
+# 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.
+
+import os, sys, thread, time
+
+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()
+               if for_comm is not None:
+                       print "\nsyscall events for %s:\n\n" % (for_comm),
+               else:
+                       print "\nsyscall events:\n\n",
+
+               print "%-40s  %10s\n" % ("event", "count"),
+               print "%-40s  %10s\n" % ("----------------------------------------", \
+                                                "----------"),
+
+               for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
+                                             reverse = True):
+                       try:
+                               print "%-40s  %10d\n" % (syscall_name(id), val),
+                       except TypeError:
+                               pass
+               syscalls.clear()
+               time.sleep(interval)