xref: /linux/tools/perf/scripts/python/stat-cpi.py (revision 597473720f4dc69749542bfcfed4a927a43d935e) 
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))
80