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# perf script event handlers, generated by perf script -g python
# Licensed under the terms of the GNU GPL License version 2
# The common_* event handler fields are the most useful fields common to
# all events. They don't necessarily correspond to the 'common_*' fields
# in the format files. Those fields not available as handler params can
# be retrieved using Python functions of the form common_*(context).
# See the perf-trace-python Documentation for the list of available functions.
import os
import sys
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
from perf_trace_context import *
from subprocess import *
from Core import *
import re;
from optparse import OptionParser
#
# Add options to specify vmlinux file and the objdump executable
#
parser = OptionParser()
parser.add_option("-k", "--vmlinux", dest="vmlinux_name",
help="path to vmlinux file")
parser.add_option("-d", "--objdump", dest="objdump_name",
help="name of objdump executable (in path)")
(options, args) = parser.parse_args()
if (options.objdump_name == None):
sys.exit("No objdump executable specified - use -d or --objdump option")
# initialize global dicts and regular expression
build_ids = dict();
mmaps = dict();
disasm_cache = dict();
disasm_re = re.compile("^\s*([0-9a-fA-F]+):")
cache_size = 16*1024
def trace_begin():
cmd_output = check_output(["perf", "buildid-list"]).split('\n');
bid_re = re.compile("([a-fA-f0-9]+)[ \t]([^ \n]+)")
for line in cmd_output:
m = bid_re.search(line)
if (m != None) :
build_ids[m.group(2)] = \
os.environ['PERF_BUILDID_DIR'] + \
m.group(2) + "/" + m.group(1);
if ((options.vmlinux_name != None) and ("[kernel.kallsyms]" in build_ids)):
build_ids['[kernel.kallsyms]'] = options.vmlinux_name;
else:
del build_ids['[kernel.kallsyms]']
mmap_re = re.compile("PERF_RECORD_MMAP2 -?[0-9]+/[0-9]+: \[(0x[0-9a-fA-F]+).*:\s.*\s(.*.so)")
cmd_output= check_output("perf script --show-mmap-events | fgrep PERF_RECORD_MMAP2",shell=True).split('\n')
for line in cmd_output:
m = mmap_re.search(line)
if (m != None) :
mmaps[m.group(2)] = int(m.group(1),0)
def trace_end():
pass
def process_event(t):
global cache_size
global options
sample = t['sample']
dso = t['dso']
# don't let the cache get too big, but don't bother with a fancy replacement policy
# just clear it when it hits max size
if (len(disasm_cache) > cache_size):
disasm_cache.clear();
cpu = format(sample['cpu'], "d");
addr_range = format(sample['ip'],"x") + ":" + format(sample['addr'],"x");
try:
disasm_output = disasm_cache[addr_range];
except:
try:
fname = build_ids[dso];
except KeyError:
if (dso == '[kernel.kallsyms]'):
return;
fname = dso;
if (dso in mmaps):
offset = mmaps[dso];
disasm = [options.objdump_name,"-d","-z", "--adjust-vma="+format(offset,"#x"),"--start-address="+format(sample['ip'],"#x"),"--stop-address="+format(sample['addr'],"#x"), fname]
else:
offset = 0
disasm = [options.objdump_name,"-d","-z", "--start-address="+format(sample['ip'],"#x"),"--stop-address="+format(sample['addr'],"#x"),fname]
disasm_output = check_output(disasm).split('\n')
disasm_cache[addr_range] = disasm_output;
print "FILE: %s\tCPU: %s" % (dso, cpu);
for line in disasm_output:
m = disasm_re.search(line)
if (m != None) :
try:
print "\t",line
except:
exit(1);
else:
continue;
def trace_unhandled(event_name, context, event_fields_dict):
print ' '.join(['%s=%s'%(k,str(v))for k,v in sorted(event_fields_dict.items())])
def print_header(event_name, cpu, secs, nsecs, pid, comm):
print "print_header"
print "%-20s %5u %05u.%09u %8u %-20s " % \
(event_name, cpu, secs, nsecs, pid, comm),
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