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tests/plugin/inline: add test for conditional callback 

Count number of tb and insn executed using a conditional callback. We
ensure the callback has been called expected number of time (per vcpu).

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240502211522.346467-7-pierrick.bouvier@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240514174253.694591-9-alex.bennee@linaro.org>
This commit is contained in:
Pierrick Bouvier 2024-05-14 18:42:50 +01:00 committed by Alex Bennée
parent 7de77d3788
commit 544595e730
1 changed files with 86 additions and 3 deletions
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89
tests/plugin/inline.c
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@ -20,8 +20,14 @@ typedef struct {
uint64_t count_insn_inline;
uint64_t count_mem;
uint64_t count_mem_inline;
uint64_t tb_cond_num_trigger;
uint64_t tb_cond_track_count;
uint64_t insn_cond_num_trigger;
uint64_t insn_cond_track_count;
} CPUCount;
static const uint64_t cond_trigger_limit = 100;
typedef struct {
uint64_t data_insn;
uint64_t data_tb;
@ -35,6 +41,10 @@ static qemu_plugin_u64 count_insn;
static qemu_plugin_u64 count_insn_inline;
static qemu_plugin_u64 count_mem;
static qemu_plugin_u64 count_mem_inline;
static qemu_plugin_u64 tb_cond_num_trigger;
static qemu_plugin_u64 tb_cond_track_count;
static qemu_plugin_u64 insn_cond_num_trigger;
static qemu_plugin_u64 insn_cond_track_count;
static struct qemu_plugin_scoreboard *data;
static qemu_plugin_u64 data_insn;
static qemu_plugin_u64 data_tb;
@ -56,12 +66,19 @@ static void stats_insn(void)
const uint64_t per_vcpu = qemu_plugin_u64_sum(count_insn);
const uint64_t inl_per_vcpu =
qemu_plugin_u64_sum(count_insn_inline);
const uint64_t cond_num_trigger =
qemu_plugin_u64_sum(insn_cond_num_trigger);
const uint64_t cond_track_left = qemu_plugin_u64_sum(insn_cond_track_count);
const uint64_t conditional =
cond_num_trigger * cond_trigger_limit + cond_track_left;
printf("insn: %" PRIu64 "\n", expected);
printf("insn: %" PRIu64 " (per vcpu)\n", per_vcpu);
printf("insn: %" PRIu64 " (per vcpu inline)\n", inl_per_vcpu);
printf("insn: %" PRIu64 " (cond cb)\n", conditional);
g_assert(expected > 0);
g_assert(per_vcpu == expected);
g_assert(inl_per_vcpu == expected);
g_assert(conditional == expected);
}
static void stats_tb(void)
@ -70,12 +87,18 @@ static void stats_tb(void)
const uint64_t per_vcpu = qemu_plugin_u64_sum(count_tb);
const uint64_t inl_per_vcpu =
qemu_plugin_u64_sum(count_tb_inline);
const uint64_t cond_num_trigger = qemu_plugin_u64_sum(tb_cond_num_trigger);
const uint64_t cond_track_left = qemu_plugin_u64_sum(tb_cond_track_count);
const uint64_t conditional =
cond_num_trigger * cond_trigger_limit + cond_track_left;
printf("tb: %" PRIu64 "\n", expected);
printf("tb: %" PRIu64 " (per vcpu)\n", per_vcpu);
printf("tb: %" PRIu64 " (per vcpu inline)\n", inl_per_vcpu);
printf("tb: %" PRIu64 " (conditional cb)\n", conditional);
g_assert(expected > 0);
g_assert(per_vcpu == expected);
g_assert(inl_per_vcpu == expected);
g_assert(conditional == expected);
}
static void stats_mem(void)
@ -104,14 +127,35 @@ static void plugin_exit(qemu_plugin_id_t id, void *udata)
const uint64_t insn_inline = qemu_plugin_u64_get(count_insn_inline, i);
const uint64_t mem = qemu_plugin_u64_get(count_mem, i);
const uint64_t mem_inline = qemu_plugin_u64_get(count_mem_inline, i);
printf("cpu %d: tb (%" PRIu64 ", %" PRIu64 ") | "
"insn (%" PRIu64 ", %" PRIu64 ") | "
const uint64_t tb_cond_trigger =
qemu_plugin_u64_get(tb_cond_num_trigger, i);
const uint64_t tb_cond_left =
qemu_plugin_u64_get(tb_cond_track_count, i);
const uint64_t insn_cond_trigger =
qemu_plugin_u64_get(insn_cond_num_trigger, i);
const uint64_t insn_cond_left =
qemu_plugin_u64_get(insn_cond_track_count, i);
printf("cpu %d: tb (%" PRIu64 ", %" PRIu64
", %" PRIu64 " * %" PRIu64 " + %" PRIu64
") | "
"insn (%" PRIu64 ", %" PRIu64
", %" PRIu64 " * %" PRIu64 " + %" PRIu64
") | "
"mem (%" PRIu64 ", %" PRIu64 ")"
"\n",
i, tb, tb_inline, insn, insn_inline, mem, mem_inline);
i,
tb, tb_inline,
tb_cond_trigger, cond_trigger_limit, tb_cond_left,
insn, insn_inline,
insn_cond_trigger, cond_trigger_limit, insn_cond_left,
mem, mem_inline);
g_assert(tb == tb_inline);
g_assert(insn == insn_inline);
g_assert(mem == mem_inline);
g_assert(tb_cond_trigger == tb / cond_trigger_limit);
g_assert(tb_cond_left == tb % cond_trigger_limit);
g_assert(insn_cond_trigger == insn / cond_trigger_limit);
g_assert(insn_cond_left == insn % cond_trigger_limit);
}
stats_tb();
@ -132,6 +176,24 @@ static void vcpu_tb_exec(unsigned int cpu_index, void *udata)
g_mutex_unlock(&tb_lock);
}
static void vcpu_tb_cond_exec(unsigned int cpu_index, void *udata)
{
g_assert(qemu_plugin_u64_get(tb_cond_track_count, cpu_index) ==
cond_trigger_limit);
g_assert(qemu_plugin_u64_get(data_tb, cpu_index) == (uintptr_t) udata);
qemu_plugin_u64_set(tb_cond_track_count, cpu_index, 0);
qemu_plugin_u64_add(tb_cond_num_trigger, cpu_index, 1);
}
static void vcpu_insn_cond_exec(unsigned int cpu_index, void *udata)
{
g_assert(qemu_plugin_u64_get(insn_cond_track_count, cpu_index) ==
cond_trigger_limit);
g_assert(qemu_plugin_u64_get(data_insn, cpu_index) == (uintptr_t) udata);
qemu_plugin_u64_set(insn_cond_track_count, cpu_index, 0);
qemu_plugin_u64_add(insn_cond_num_trigger, cpu_index, 1);
}
static void vcpu_insn_exec(unsigned int cpu_index, void *udata)
{
qemu_plugin_u64_add(count_insn, cpu_index, 1);
@ -163,6 +225,12 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu(
tb, QEMU_PLUGIN_INLINE_ADD_U64, count_tb_inline, 1);
qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu(
tb, QEMU_PLUGIN_INLINE_ADD_U64, tb_cond_track_count, 1);
qemu_plugin_register_vcpu_tb_exec_cond_cb(
tb, vcpu_tb_cond_exec, QEMU_PLUGIN_CB_NO_REGS,
QEMU_PLUGIN_COND_EQ, tb_cond_track_count, cond_trigger_limit, tb_store);
for (int idx = 0; idx < qemu_plugin_tb_n_insns(tb); ++idx) {
struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, idx);
void *insn_store = insn;
@ -176,6 +244,13 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu(
insn, QEMU_PLUGIN_INLINE_ADD_U64, count_insn_inline, 1);
qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu(
insn, QEMU_PLUGIN_INLINE_ADD_U64, insn_cond_track_count, 1);
qemu_plugin_register_vcpu_insn_exec_cond_cb(
insn, vcpu_insn_cond_exec, QEMU_PLUGIN_CB_NO_REGS,
QEMU_PLUGIN_COND_EQ, insn_cond_track_count, cond_trigger_limit,
insn_store);
qemu_plugin_register_vcpu_mem_inline_per_vcpu(
insn, QEMU_PLUGIN_MEM_RW,
QEMU_PLUGIN_INLINE_STORE_U64,
@ -207,6 +282,14 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
counts, CPUCount, count_insn_inline);
count_mem_inline = qemu_plugin_scoreboard_u64_in_struct(
counts, CPUCount, count_mem_inline);
tb_cond_num_trigger = qemu_plugin_scoreboard_u64_in_struct(
counts, CPUCount, tb_cond_num_trigger);
tb_cond_track_count = qemu_plugin_scoreboard_u64_in_struct(
counts, CPUCount, tb_cond_track_count);
insn_cond_num_trigger = qemu_plugin_scoreboard_u64_in_struct(
counts, CPUCount, insn_cond_num_trigger);
insn_cond_track_count = qemu_plugin_scoreboard_u64_in_struct(
counts, CPUCount, insn_cond_track_count);
data = qemu_plugin_scoreboard_new(sizeof(CPUData));
data_insn = qemu_plugin_scoreboard_u64_in_struct(data, CPUData, data_insn);
data_tb = qemu_plugin_scoreboard_u64_in_struct(data, CPUData, data_tb);