projects/linux·blob 0d55ec6f · refs

78 lines · 2.4 KiB

1#!/usr/bin/env python
2# SPDX-License-Identifier: GPL-2.0
3
4data = {}
5times = []
6threads = []
7cpus = []
8
9def get_key(time, event, cpu, thread):
10 return "%d-%s-%d-%d" % (time, event, cpu, thread)
11
12def store_key(time, cpu, thread):
13 if (time not in times):
14 times.append(time)
15
16 if (cpu not in cpus):
17 cpus.append(cpu)
18
19 if (thread not in threads):
20 threads.append(thread)
21
22def store(time, event, cpu, thread, val, ena, run):
23 #print "event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" % \
24 # (event, cpu, thread, time, val, ena, run)
25
26 store_key(time, cpu, thread)
27 key = get_key(time, event, cpu, thread)
28 data[key] = [ val, ena, run]
29
30def get(time, event, cpu, thread):
31 key = get_key(time, event, cpu, thread)
32 return data[key][0]
33
34def stat__cycles_k(cpu, thread, time, val, ena, run):
35 store(time, "cycles", cpu, thread, val, ena, run);
36
37def stat__instructions_k(cpu, thread, time, val, ena, run):
38 store(time, "instructions", cpu, thread, val, ena, run);
39
40def stat__cycles_u(cpu, thread, time, val, ena, run):
41 store(time, "cycles", cpu, thread, val, ena, run);
42
43def stat__instructions_u(cpu, thread, time, val, ena, run):
44 store(time, "instructions", cpu, thread, val, ena, run);
45
46def stat__cycles(cpu, thread, time, val, ena, run):
47 store(time, "cycles", cpu, thread, val, ena, run);
48
49def stat__instructions(cpu, thread, time, val, ena, run):
50 store(time, "instructions", cpu, thread, val, ena, run);
51
52def stat__interval(time):
53 for cpu in cpus:
54 for thread in threads:
55 cyc = get(time, "cycles", cpu, thread)
56 ins = get(time, "instructions", cpu, thread)
57 cpi = 0
58
59 if ins != 0:
60 cpi = cyc/float(ins)
61
62 print "%15f: cpu %d, thread %d -> cpi %f (%d/%d)" % (time/(float(1000000000)), cpu, thread, cpi, cyc, ins)
63
64def trace_end():
65 pass
66# XXX trace_end callback could be used as an alternative place
67# to compute same values as in the script above:
68#
69# for time in times:
70# for cpu in cpus:
71# for thread in threads:
72# cyc = get(time, "cycles", cpu, thread)
73# ins = get(time, "instructions", cpu, thread)
74#
75# if ins != 0:
76# cpi = cyc/float(ins)
77#
78# print "time %.9f, cpu %d, thread %d -> cpi %f" % (time/(float(1000000000)), cpu, thread, cpi)