hw: megasas: consider 'iov_count=0' is an error in megasas_map_sgl
[qemu/ar7.git] / tests / plugin / bb.c
blobe4cc7fdd6ed053419eada2a6c66a55ab80ac8492
1 /*
2 * Copyright (C) 2018, Emilio G. Cota <cota@braap.org>
4 * License: GNU GPL, version 2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7 #include <inttypes.h>
8 #include <assert.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <stdio.h>
13 #include <glib.h>
15 #include <qemu-plugin.h>
17 QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
19 typedef struct {
20 GMutex lock;
21 int index;
22 uint64_t bb_count;
23 uint64_t insn_count;
24 } CPUCount;
26 /* Used by the inline & linux-user counts */
27 static bool do_inline;
28 static CPUCount inline_count;
30 /* Dump running CPU total on idle? */
31 static bool idle_report;
32 static GPtrArray *counts;
33 static int max_cpus;
35 static void gen_one_cpu_report(CPUCount *count, GString *report)
37 if (count->bb_count) {
38 g_string_append_printf(report, "CPU%d: "
39 "bb's: %" PRIu64", insns: %" PRIu64 "\n",
40 count->index,
41 count->bb_count, count->insn_count);
45 static void plugin_exit(qemu_plugin_id_t id, void *p)
47 g_autoptr(GString) report = g_string_new("");
49 if (do_inline || !max_cpus) {
50 g_string_printf(report, "bb's: %" PRIu64", insns: %" PRIu64 "\n",
51 inline_count.bb_count, inline_count.insn_count);
52 } else {
53 g_ptr_array_foreach(counts, (GFunc) gen_one_cpu_report, report);
55 qemu_plugin_outs(report->str);
58 static void vcpu_idle(qemu_plugin_id_t id, unsigned int cpu_index)
60 CPUCount *count = g_ptr_array_index(counts, cpu_index);
61 g_autoptr(GString) report = g_string_new("");
62 gen_one_cpu_report(count, report);
64 if (report->len > 0) {
65 g_string_prepend(report, "Idling ");
66 qemu_plugin_outs(report->str);
70 static void vcpu_tb_exec(unsigned int cpu_index, void *udata)
72 CPUCount *count = max_cpus ?
73 g_ptr_array_index(counts, cpu_index) : &inline_count;
75 unsigned long n_insns = (unsigned long)udata;
76 g_mutex_lock(&count->lock);
77 count->insn_count += n_insns;
78 count->bb_count++;
79 g_mutex_unlock(&count->lock);
82 static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
84 unsigned long n_insns = qemu_plugin_tb_n_insns(tb);
86 if (do_inline) {
87 qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64,
88 &inline_count.bb_count, 1);
89 qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64,
90 &inline_count.insn_count,
91 n_insns);
92 } else {
93 qemu_plugin_register_vcpu_tb_exec_cb(tb, vcpu_tb_exec,
94 QEMU_PLUGIN_CB_NO_REGS,
95 (void *)n_insns);
99 QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
100 const qemu_info_t *info,
101 int argc, char **argv)
103 int i;
105 for (i = 0; i < argc; i++) {
106 char *opt = argv[i];
107 if (g_strcmp0(opt, "inline") == 0) {
108 do_inline = true;
109 } else if (g_strcmp0(opt, "idle") == 0) {
110 idle_report = true;
111 } else {
112 fprintf(stderr, "option parsing failed: %s\n", opt);
113 return -1;
117 if (info->system_emulation && !do_inline) {
118 max_cpus = info->system.max_vcpus;
119 counts = g_ptr_array_new();
120 for (i = 0; i < max_cpus; i++) {
121 CPUCount *count = g_new0(CPUCount, 1);
122 g_mutex_init(&count->lock);
123 count->index = i;
124 g_ptr_array_add(counts, count);
126 } else if (!do_inline) {
127 g_mutex_init(&inline_count.lock);
130 if (idle_report) {
131 qemu_plugin_register_vcpu_idle_cb(id, vcpu_idle);
134 qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
135 qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
136 return 0;