# system call top # (c) 2010, Tom Zanussi # 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) cgit.cgi/linux/net-next.git/diff/net/mac80211/chan.c?h=nds-private-remove&id=6e2de20ddc4b606a9b6b170a6bb21ee4dc4ad93a'>diff

path: root/net/mac80211/chan.c

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