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b504d7f687
Remove mixed indentation in Python scripts. Revert to either all tabs (most common form) or all spaces (4 or 8) depending on what was the intent of the original commit. This is necessary to complete Python3 support as it will flag an error if it encounters mixed indentation. Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190302011903.2416-2-tonyj@suse.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
100 lines
2.4 KiB
Python
100 lines
2.4 KiB
Python
# mem-phys-addr.py: Resolve physical address samples
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# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (c) 2018, Intel Corporation.
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from __future__ import division
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from __future__ import print_function
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import os
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import sys
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import struct
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import re
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import bisect
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import collections
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sys.path.append(os.environ['PERF_EXEC_PATH'] + \
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'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
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#physical address ranges for System RAM
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system_ram = []
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#physical address ranges for Persistent Memory
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pmem = []
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#file object for proc iomem
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f = None
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#Count for each type of memory
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load_mem_type_cnt = collections.Counter()
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#perf event name
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event_name = None
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def parse_iomem():
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global f
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f = open('/proc/iomem', 'r')
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for i, j in enumerate(f):
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m = re.split('-|:',j,2)
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if m[2].strip() == 'System RAM':
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system_ram.append(int(m[0], 16))
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system_ram.append(int(m[1], 16))
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if m[2].strip() == 'Persistent Memory':
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pmem.append(int(m[0], 16))
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pmem.append(int(m[1], 16))
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def print_memory_type():
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print("Event: %s" % (event_name))
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print("%-40s %10s %10s\n" % ("Memory type", "count", "percentage"), end='')
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print("%-40s %10s %10s\n" % ("----------------------------------------",
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"-----------", "-----------"),
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end='');
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total = sum(load_mem_type_cnt.values())
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for mem_type, count in sorted(load_mem_type_cnt.most_common(), \
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key = lambda kv: (kv[1], kv[0]), reverse = True):
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print("%-40s %10d %10.1f%%\n" %
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(mem_type, count, 100 * count / total),
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end='')
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def trace_begin():
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parse_iomem()
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def trace_end():
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print_memory_type()
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f.close()
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def is_system_ram(phys_addr):
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#/proc/iomem is sorted
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position = bisect.bisect(system_ram, phys_addr)
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if position % 2 == 0:
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return False
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return True
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def is_persistent_mem(phys_addr):
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position = bisect.bisect(pmem, phys_addr)
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if position % 2 == 0:
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return False
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return True
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def find_memory_type(phys_addr):
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if phys_addr == 0:
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return "N/A"
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if is_system_ram(phys_addr):
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return "System RAM"
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if is_persistent_mem(phys_addr):
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return "Persistent Memory"
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#slow path, search all
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f.seek(0, 0)
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for j in f:
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m = re.split('-|:',j,2)
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if int(m[0], 16) <= phys_addr <= int(m[1], 16):
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return m[2]
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return "N/A"
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def process_event(param_dict):
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name = param_dict["ev_name"]
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sample = param_dict["sample"]
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phys_addr = sample["phys_addr"]
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global event_name
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if event_name == None:
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event_name = name
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load_mem_type_cnt[find_memory_type(phys_addr)] += 1
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