perf-eh_elf/scripts/python/mem-phys-addr.py

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Merge tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull AFS fixes from David Howells: "Here's a set of patches that fix a number of bugs in the in-kernel AFS client, including: - Fix directory locking to not use individual page locks for directory reading/scanning but rather to use a semaphore on the afs_vnode struct as the directory contents must be read in a single blob and data from different reads must not be mixed as the entire contents may be shuffled about between reads. - Fix address list parsing to handle port specifiers correctly. - Only give up callback records on a server if we actually talked to that server (we might not be able to access a server). - Fix some callback handling bugs, including refcounting, whole-volume callbacks and when callbacks actually get broken in response to a CB.CallBack op. - Fix some server/address rotation bugs, including giving up if we can't probe a server; giving up if a server says it doesn't have a volume, but there are more servers to try. - Fix the decoding of fetched statuses to be OpenAFS compatible. - Fix the handling of server lookups in Cache Manager ops (such as CB.InitCallBackState3) to use a UUID if possible and to handle no server being found. - Fix a bug in server lookup where not all addresses are compared. - Fix the non-encryption of calls that prevents some servers from being accessed (this also requires an AF_RXRPC patch that has already gone in through the net tree). There's also a patch that adds tracepoints to log Cache Manager ops that don't find a matching server, either by UUID or by address" * tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Fix the non-encryption of calls afs: Fix CB.CallBack handling afs: Fix whole-volume callback handling afs: Fix afs_find_server search loop afs: Fix the handling of an unfound server in CM operations afs: Add a tracepoint to record callbacks from unlisted servers afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID afs: Fix VNOVOL handling in address rotation afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility afs: Fix server rotation's handling of fileserver probe failure afs: Fix refcounting in callback registration afs: Fix giving up callbacks on server destruction afs: Fix address list parsing afs: Fix directory page locking
2018-05-15 19:48:36 +02:00
# 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