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.
15 #include <qemu-plugin.h>
17 QEMU_PLUGIN_EXPORT
int qemu_plugin_version
= QEMU_PLUGIN_VERSION
;
24 static struct qemu_plugin_scoreboard
*counts
;
25 static qemu_plugin_u64 mem_count
;
26 static qemu_plugin_u64 io_count
;
27 static bool do_inline
, do_callback
;
29 static enum qemu_plugin_mem_rw rw
= QEMU_PLUGIN_MEM_RW
;
31 static void plugin_exit(qemu_plugin_id_t id
, void *p
)
33 g_autoptr(GString
) out
= g_string_new("");
35 if (do_inline
|| do_callback
) {
36 g_string_printf(out
, "mem accesses: %" PRIu64
"\n",
37 qemu_plugin_u64_sum(mem_count
));
40 g_string_append_printf(out
, "io accesses: %" PRIu64
"\n",
41 qemu_plugin_u64_sum(io_count
));
43 qemu_plugin_outs(out
->str
);
44 qemu_plugin_scoreboard_free(counts
);
47 static void vcpu_mem(unsigned int cpu_index
, qemu_plugin_meminfo_t meminfo
,
48 uint64_t vaddr
, void *udata
)
51 struct qemu_plugin_hwaddr
*hwaddr
;
52 hwaddr
= qemu_plugin_get_hwaddr(meminfo
, vaddr
);
53 if (qemu_plugin_hwaddr_is_io(hwaddr
)) {
54 qemu_plugin_u64_add(io_count
, cpu_index
, 1);
56 qemu_plugin_u64_add(mem_count
, cpu_index
, 1);
59 qemu_plugin_u64_add(mem_count
, cpu_index
, 1);
63 static void vcpu_tb_trans(qemu_plugin_id_t id
, struct qemu_plugin_tb
*tb
)
65 size_t n
= qemu_plugin_tb_n_insns(tb
);
68 for (i
= 0; i
< n
; i
++) {
69 struct qemu_plugin_insn
*insn
= qemu_plugin_tb_get_insn(tb
, i
);
72 qemu_plugin_register_vcpu_mem_inline_per_vcpu(
74 QEMU_PLUGIN_INLINE_ADD_U64
,
78 qemu_plugin_register_vcpu_mem_cb(insn
, vcpu_mem
,
79 QEMU_PLUGIN_CB_NO_REGS
,
85 QEMU_PLUGIN_EXPORT
int qemu_plugin_install(qemu_plugin_id_t id
,
86 const qemu_info_t
*info
,
87 int argc
, char **argv
)
90 for (int i
= 0; i
< argc
; i
++) {
92 g_auto(GStrv
) tokens
= g_strsplit(opt
, "=", 2);
94 if (g_strcmp0(tokens
[0], "haddr") == 0) {
95 if (!qemu_plugin_bool_parse(tokens
[0], tokens
[1], &do_haddr
)) {
96 fprintf(stderr
, "boolean argument parsing failed: %s\n", opt
);
99 } else if (g_strcmp0(tokens
[0], "track") == 0) {
100 if (g_strcmp0(tokens
[1], "r") == 0) {
101 rw
= QEMU_PLUGIN_MEM_R
;
102 } else if (g_strcmp0(tokens
[1], "w") == 0) {
103 rw
= QEMU_PLUGIN_MEM_W
;
104 } else if (g_strcmp0(tokens
[1], "rw") == 0) {
105 rw
= QEMU_PLUGIN_MEM_RW
;
107 fprintf(stderr
, "invalid value for argument track: %s\n", opt
);
110 } else if (g_strcmp0(tokens
[0], "inline") == 0) {
111 if (!qemu_plugin_bool_parse(tokens
[0], tokens
[1], &do_inline
)) {
112 fprintf(stderr
, "boolean argument parsing failed: %s\n", opt
);
115 } else if (g_strcmp0(tokens
[0], "callback") == 0) {
116 if (!qemu_plugin_bool_parse(tokens
[0], tokens
[1], &do_callback
)) {
117 fprintf(stderr
, "boolean argument parsing failed: %s\n", opt
);
121 fprintf(stderr
, "option parsing failed: %s\n", opt
);
126 if (do_inline
&& do_callback
) {
128 "can't enable inline and callback counting at the same time\n");
132 counts
= qemu_plugin_scoreboard_new(sizeof(CPUCount
));
133 mem_count
= qemu_plugin_scoreboard_u64_in_struct(
134 counts
, CPUCount
, mem_count
);
135 io_count
= qemu_plugin_scoreboard_u64_in_struct(counts
, CPUCount
, io_count
);
136 qemu_plugin_register_vcpu_tb_trans_cb(id
, vcpu_tb_trans
);
137 qemu_plugin_register_atexit_cb(id
, plugin_exit
, NULL
);