96 lines
2.3 KiB
Python
96 lines
2.3 KiB
Python
# mem-phys-addr.py: Resolve physical address samples
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Copyright (c) 2018, Intel Corporation.
|
|
|
|
from __future__ import division
|
|
import os
|
|
import sys
|
|
import struct
|
|
import re
|
|
import bisect
|
|
import collections
|
|
|
|
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
|
|
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
|
|
|
|
#physical address ranges for System RAM
|
|
system_ram = []
|
|
#physical address ranges for Persistent Memory
|
|
pmem = []
|
|
#file object for proc iomem
|
|
f = None
|
|
#Count for each type of memory
|
|
load_mem_type_cnt = collections.Counter()
|
|
#perf event name
|
|
event_name = None
|
|
|
|
def parse_iomem():
|
|
global f
|
|
f = open('/proc/iomem', 'r')
|
|
for i, j in enumerate(f):
|
|
m = re.split('-|:',j,2)
|
|
if m[2].strip() == 'System RAM':
|
|
system_ram.append(long(m[0], 16))
|
|
system_ram.append(long(m[1], 16))
|
|
if m[2].strip() == 'Persistent Memory':
|
|
pmem.append(long(m[0], 16))
|
|
pmem.append(long(m[1], 16))
|
|
|
|
def print_memory_type():
|
|
print "Event: %s" % (event_name)
|
|
print "%-40s %10s %10s\n" % ("Memory type", "count", "percentage"),
|
|
print "%-40s %10s %10s\n" % ("----------------------------------------", \
|
|
"-----------", "-----------"),
|
|
total = sum(load_mem_type_cnt.values())
|
|
for mem_type, count in sorted(load_mem_type_cnt.most_common(), \
|
|
key = lambda(k, v): (v, k), reverse = True):
|
|
print "%-40s %10d %10.1f%%\n" % (mem_type, count, 100 * count / total),
|
|
|
|
def trace_begin():
|
|
parse_iomem()
|
|
|
|
def trace_end():
|
|
print_memory_type()
|
|
f.close()
|
|
|
|
def is_system_ram(phys_addr):
|
|
#/proc/iomem is sorted
|
|
position = bisect.bisect(system_ram, phys_addr)
|
|
if position % 2 == 0:
|
|
return False
|
|
return True
|
|
|
|
def is_persistent_mem(phys_addr):
|
|
position = bisect.bisect(pmem, phys_addr)
|
|
if position % 2 == 0:
|
|
return False
|
|
return True
|
|
|
|
def find_memory_type(phys_addr):
|
|
if phys_addr == 0:
|
|
return "N/A"
|
|
if is_system_ram(phys_addr):
|
|
return "System RAM"
|
|
|
|
if is_persistent_mem(phys_addr):
|
|
return "Persistent Memory"
|
|
|
|
#slow path, search all
|
|
f.seek(0, 0)
|
|
for j in f:
|
|
m = re.split('-|:',j,2)
|
|
if long(m[0], 16) <= phys_addr <= long(m[1], 16):
|
|
return m[2]
|
|
return "N/A"
|
|
|
|
def process_event(param_dict):
|
|
name = param_dict["ev_name"]
|
|
sample = param_dict["sample"]
|
|
phys_addr = sample["phys_addr"]
|
|
|
|
global event_name
|
|
if event_name == None:
|
|
event_name = name
|
|
load_mem_type_cnt[find_memory_type(phys_addr)] += 1
|