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Code Issues Releases Activity

avutil/macos_kperf: Fix assert which makes kperf failed to run

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On m1, kpc_get_counter_count(KPC_MASK) return 8 in my test. The
exact value doesn't matter in our case, as long as we have a
sufficiently large array

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili 2024-06-18 01:04:00 +08:00
parent ec1daa39e0
commit e598a323dc
1 changed files with 10 additions and 6 deletions
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16
libavutil/macos_kperf.c
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@ -67,14 +67,15 @@ KPERF_LIST
#define KPC_CLASS_POWER_MASK (1 << 2)
#define KPC_CLASS_RAWPMU_MASK (1 << 3)
#define COUNTERS_COUNT 10
#define KPC_MAX_COUNTERS 32
#define CONFIG_COUNT 8
#define KPC_MASK (KPC_CLASS_CONFIGURABLE_MASK | KPC_CLASS_FIXED_MASK)
static void kperf_init(void)
{
uint64_t config[COUNTERS_COUNT] = {0};
uint64_t config[CONFIG_COUNT] = {0};
void *kperf = NULL;
uint32_t n;
av_assert0(kperf = dlopen("/System/Library/PrivateFrameworks/kperf.framework/Versions/A/kperf", RTLD_LAZY));
@ -82,8 +83,10 @@ static void kperf_init(void)
KPERF_LIST
#undef F
av_assert0(kpc_get_counter_count(KPC_MASK) == COUNTERS_COUNT);
av_assert0(kpc_get_config_count(KPC_MASK) == CONFIG_COUNT);
n = kpc_get_counter_count(KPC_MASK);
av_assert0(n <= KPC_MAX_COUNTERS);
n = kpc_get_config_count(KPC_MASK);
av_assert0(n <= CONFIG_COUNT);
config[0] = CPMU_CORE_CYCLE | CFGWORD_EL0A64EN_MASK;
// config[3] = CPMU_INST_BRANCH | CFGWORD_EL0A64EN_MASK;
@ -104,8 +107,9 @@ void ff_kperf_init(void)
uint64_t ff_kperf_cycles(void)
{
uint64_t counters[COUNTERS_COUNT];
if (kpc_get_thread_counters(0, COUNTERS_COUNT, counters)) {
uint64_t counters[KPC_MAX_COUNTERS];
if (kpc_get_thread_counters(0, KPC_MAX_COUNTERS, counters)) {
return -1;
}