riscv
/
qemu
mirror of https://gitea.goldendeliverer.com/riscv/qemu.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

tests/plugin/insn: migrate to new per_vcpu API 

Reviewed-by: Luc Michel <luc.michel@amd.com>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240304130036.124418-8-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-21-alex.bennee@linaro.org>
pull/263/head
Pierrick Bouvier 2 years ago
committed by Alex Bennée
parent
4f8d886085
commit
3d15c8d87e
1 changed files with 50 additions and 56 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 106
      tests/plugin/insn.c

106
tests/plugin/insn.c
View File

@ -16,25 +16,21 @@
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
#define MAX_CPUS 8 /* lets not go nuts */
typedef struct {
uint64_t insn_count;
} InstructionCount;
static InstructionCount counts[MAX_CPUS];
static uint64_t inline_insn_count;
static qemu_plugin_u64 insn_count;
static bool do_inline;
static bool do_size;
static GArray *sizes;
typedef struct {
uint64_t hits;
uint64_t last_hit;
uint64_t total_delta;
} MatchCount;
typedef struct {
char *match_string;
uint64_t hits[MAX_CPUS];
uint64_t last_hit[MAX_CPUS];
uint64_t total_delta[MAX_CPUS];
GPtrArray *history[MAX_CPUS];
struct qemu_plugin_scoreboard *counts; /* MatchCount */
} Match;
static GArray *matches;
@ -67,41 +63,40 @@ static void vcpu_init(qemu_plugin_id_t id, unsigned int vcpu_index)
static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata)
{
unsigned int i = cpu_index % MAX_CPUS;
InstructionCount *c = &counts[i];
c->insn_count++;
qemu_plugin_u64_add(insn_count, cpu_index, 1);
}
static void vcpu_insn_matched_exec_before(unsigned int cpu_index, void *udata)
{
unsigned int i = cpu_index % MAX_CPUS;
Instruction *insn = (Instruction *) udata;
Match *match = insn->match;
Match *insn_match = insn->match;
MatchCount *match = qemu_plugin_scoreboard_find(insn_match->counts,
cpu_index);
g_autoptr(GString) ts = g_string_new("");
insn->hits++;
g_string_append_printf(ts, "0x%" PRIx64 ", '%s', %"PRId64 " hits",
insn->vaddr, insn->disas, insn->hits);
uint64_t icount = counts[i].insn_count;
uint64_t delta = icount - match->last_hit[i];
uint64_t icount = qemu_plugin_u64_get(insn_count, cpu_index);
uint64_t delta = icount - match->last_hit;
match->hits[i]++;
match->total_delta[i] += delta;
match->hits++;
match->total_delta += delta;
g_string_append_printf(ts,
", %"PRId64" match hits, "
"Δ+%"PRId64 " since last match,"
" , cpu %u,"
" %"PRId64" match hits,"
" Δ+%"PRId64 " since last match,"
" %"PRId64 " avg insns/match\n",
match->hits[i], delta,
match->total_delta[i] / match->hits[i]);
cpu_index,
match->hits, delta,
match->total_delta / match->hits);
match->last_hit[i] = icount;
match->last_hit = icount;
qemu_plugin_outs(ts->str);
g_ptr_array_add(match->history[i], insn);
}
static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
@ -113,8 +108,8 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i);
if (do_inline) {
qemu_plugin_register_vcpu_insn_exec_inline(
insn, QEMU_PLUGIN_INLINE_ADD_U64, &inline_insn_count, 1);
qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu(
insn, QEMU_PLUGIN_INLINE_ADD_U64, insn_count, 1);
} else {
uint64_t vaddr = qemu_plugin_insn_vaddr(insn);
qemu_plugin_register_vcpu_insn_exec_cb(
@ -136,10 +131,9 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
* information about the instruction which we also need to
* save if there is a hit.
*/
if (matches) {
if (matches->len) {
char *insn_disas = qemu_plugin_insn_disas(insn);
int j;
for (j = 0; j < matches->len; j++) {
for (int j = 0; j < matches->len; j++) {
Match *m = &g_array_index(matches, Match, j);
if (g_str_has_prefix(insn_disas, m->match_string)) {
Instruction *rec = g_new0(Instruction, 1);
@ -169,36 +163,33 @@ static void plugin_exit(qemu_plugin_id_t id, void *p)
"len %d bytes: %ld insns\n", i, *cnt);
}
}
} else if (do_inline) {
g_string_append_printf(out, "insns: %" PRIu64 "\n", inline_insn_count);
} else {
uint64_t total_insns = 0;
for (i = 0; i < MAX_CPUS; i++) {
InstructionCount *c = &counts[i];
if (c->insn_count) {
g_string_append_printf(out, "cpu %d insns: %" PRIu64 "\n",
i, c->insn_count);
total_insns += c->insn_count;
}
for (i = 0; i < qemu_plugin_num_vcpus(); i++) {
g_string_append_printf(out, "cpu %d insns: %" PRIu64 "\n",
i, qemu_plugin_u64_get(insn_count, i));
}
g_string_append_printf(out, "total insns: %" PRIu64 "\n",
total_insns);
qemu_plugin_u64_sum(insn_count));
}
qemu_plugin_outs(out->str);
qemu_plugin_scoreboard_free(insn_count.score);
for (i = 0; i < matches->len; ++i) {
Match *m = &g_array_index(matches, Match, i);
g_free(m->match_string);
qemu_plugin_scoreboard_free(m->counts);
}
g_array_free(matches, TRUE);
g_array_free(sizes, TRUE);
}
/* Add a match to the array of matches */
static void parse_match(char *match)
{
Match new_match = { .match_string = match };
int i;
for (i = 0; i < MAX_CPUS; i++) {
new_match.history[i] = g_ptr_array_new();
}
if (!matches) {
matches = g_array_new(false, true, sizeof(Match));
}
Match new_match = {
.match_string = g_strdup(match),
.counts = qemu_plugin_scoreboard_new(sizeof(MatchCount)) };
g_array_append_val(matches, new_match);
}
@ -206,6 +197,10 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
const qemu_info_t *info,
int argc, char **argv)
{
matches = g_array_new(false, true, sizeof(Match));
/* null terminated so 0 is not a special case */
sizes = g_array_new(true, true, sizeof(unsigned long));
for (int i = 0; i < argc; i++) {
char *opt = argv[i];
g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
@ -227,9 +222,8 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
}
}
if (do_size) {
sizes = g_array_new(true, true, sizeof(unsigned long));
}
insn_count = qemu_plugin_scoreboard_u64(
qemu_plugin_scoreboard_new(sizeof(uint64_t)));
/* Register init, translation block and exit callbacks */
qemu_plugin_register_vcpu_init_cb(id, vcpu_init);

Write Preview
Loading…
Cancel
Save