@@ -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_t 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;
@@ -48,41 +44,40 @@ typedef struct {
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_get(insn_count, cpu_index))++;
}
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_get(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)
@@ -94,8 +89,8 @@ 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(
@@ -117,10 +112,9 @@ 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);
@@ -150,36 +144,34 @@ 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;
- }
+ unsigned int num_cpus = qemu_plugin_scoreboard_size(insn_count.score);
+ for (i = 0; i < num_cpus; 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);
}
@@ -187,6 +179,10 @@ 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);
@@ -208,9 +204,7 @@ 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_u64(qemu_plugin_scoreboard_new(sizeof(uint64_t)));
qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> --- tests/plugin/insn.c | 106 +++++++++++++++++++++----------------------- 1 file changed, 50 insertions(+), 56 deletions(-)