VirtualBox

source: vbox/trunk/src/VBox/VMM/dtrace/int-1.d@ 65919

Last change on this file since 65919 was 56287, checked in by vboxsync, 10 years ago

VMM: Updated (C) year.

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  • Property svn:keywords set to Author Date Id Revision
File size: 3.4 KB
Line 
1/* $Id: int-1.d 56287 2015-06-09 11:15:22Z vboxsync $ */
2/** @file
3 * DTracing VBox - Interrupt Experiment #1.
4 */
5
6/*
7 * Copyright (C) 2012-2015 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18#pragma D option quiet
19
20uint64_t g_aStarts[uint32_t];
21uint64_t g_cUntaggedHighs;
22uint64_t g_cUntaggedGets;
23uint64_t g_cMissedHighs;
24
25inline uint32_t kfDevIdMask = 0x3ff;
26
27
28/*
29 * Timestamp the when the device raises the IRQ.
30 */
31vboxvmm*:::pdm-irq-high,vboxvmm*:::pdm-irq-hilo
32/args[1] != 0/
33{
34 /*printf("high: tag=%#x src=%d %llx -> %llx\n", args[1], args[2], g_aStarts[args[1]], timestamp);*/
35 g_aStarts[args[1]] = timestamp;
36}
37
38vboxvmm*:::pdm-irq-high,vboxvmm*:::pdm-irq-hilo
39/args[1] == 0/
40{
41 g_cUntaggedHighs++;
42}
43
44/*
45 * Catch the CPU getting the IRQ from the (A)PIC and preparing for injection.
46 */
47vboxvmm*:::pdm-irq-get
48/g_aStarts[args[1]] == 0 && args[1] != 0/
49{
50 printf("get: tag=%#x src=%d %llx - %llx = %llx\n", args[1], args[2], timestamp, g_aStarts[args[1]], timestamp - g_aStarts[args[1]]);
51 @g_MissedHighs[args[3], args[2] & kfDevIdMask] = count();
52 g_cMissedHighs++;
53}
54
55vboxvmm*:::pdm-irq-get
56/g_aStarts[args[1]] > 0 && args[1] != 0/
57{
58 /*printf("get: tag=%#x src=%d %llx - %llx = %llx\n", args[1], args[2], timestamp, g_aStarts[args[1]], timestamp - g_aStarts[args[1]]);*/
59 @g_Interrupts[args[3], args[2] & kfDevIdMask] = count();
60 @g_DispAvg[ args[3], args[2] & kfDevIdMask] = avg(timestamp - g_aStarts[args[1]]);
61 @g_DispMax[ args[3], args[2] & kfDevIdMask] = max(timestamp - g_aStarts[args[1]]);
62 @g_DispMin[ args[3], args[2] & kfDevIdMask] = min(timestamp - g_aStarts[args[1]]);
63 g_aStarts[args[1]] = 0;
64 g_cHits++;
65}
66
67vboxvmm*:::pdm-irq-get
68/args[1] == 0/
69{
70 @g_UntaggedGets[args[3]] = count();
71 g_cUntaggedGets++;
72}
73
74vboxvmm*:::pdm-irq-get
75/args[2] > kfDevIdMask/
76{
77 @g_Shared[args[3], args[2] & kfDevIdMask] = count();
78}
79
80/* For the time being, quit after 256 interrupts. */
81vboxvmm*:::pdm-irq-get
82/g_cHits >= 256/
83{
84 exit(0);
85}
86
87/*
88 * Catch the device clearing the IRQ.
89 */
90
91
92/*
93 * Report.
94 */
95END
96{
97 printf("\nInterrupt distribution:\n");
98 printa(" irq %3d dev %2d %@12u\n", @g_Interrupts);
99 printf("Interrupt sharing (devices detect pushing a line high at the same time):\n");
100 printa(" irq %3d dev %2d %@12u\n", @g_Shared);
101 printf("Minimum dispatch latency:\n");
102 printa(" irq %3d dev %2d %@12u ns\n", @g_DispMin);
103 printf("Average dispatch latency:\n");
104 printa(" irq %3d dev %2d %@12u ns\n", @g_DispAvg);
105 printf("Maximum dispatch latency:\n");
106 printa(" irq %3d dev %2d %@12u ns\n", @g_DispMax);
107}
108END
109/g_cUntaggedHighs > 0/
110{
111 printf("Untagged highs: %u\n", g_cUntaggedHighs);
112}
113END
114/g_cUntaggedGets > 0/
115{
116 printf("Untagged gets: %u\n", g_cUntaggedGets);
117 printa(" irq %3d %@12u\n", @g_UntaggedGets);
118}
119END
120/g_cMissedHighs > 0/
121{
122 printf("Missed (or shared?) highs: %u\n", g_cMissedHighs);
123 printa(" irq %3d dev %2d %@12u\n", @g_MissedHighs);
124}
125
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