1 # Monitor the system for dropped packets and proudce a report of drop locations and counts
6 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
7 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
9 from perf_trace_context import *
16 def get_kallsyms_table():
19 f = open("/proc/kallsyms", "r")
22 linecount = linecount+1
30 loc = int(line.split()[0], 16)
31 name = line.split()[2]
34 print "\r" + str(j) + "/" + str(linecount),
35 kallsyms.append({ 'loc': loc, 'name' : name})
37 print "\r" + str(j) + "/" + str(linecount)
45 return (i['name'], i['loc']-loc)
48 def print_drop_table():
49 print "%25s %25s %25s" % ("LOCATION", "OFFSET", "COUNT")
50 for i in drop_log.keys():
51 (sym, off) = get_sym(i)
54 print "%25s %25s %25s" % (sym, off, drop_log[i])
58 print "Starting trace (Ctrl-C to dump results)"
61 print "Gathering kallsyms data"
65 # called from perf, when it finds a correspoinding event
66 def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm,
67 skbaddr, protocol, location):
68 slocation = str(location)
70 drop_log[slocation] = drop_log[slocation] + 1
72 drop_log[slocation] = 1