projects/linux·blob master · refs

79 lines · 2.4 KiB

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