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minor update

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This commit is contained in:
Blaise Tine
2021-06-11 12:54:10 -07:00
parent 104da0c238
commit 78a452ea6e
1 changed files with 13 additions and 5 deletions
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16
driver/common/vx_utils.cpp
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@@ -129,18 +129,23 @@ extern int vx_dump_perf(vx_device_h device, FILE* stream) {
unsigned num_cores;
ret = vx_dev_caps(device, VX_CAPS_MAX_CORES, &num_cores);
if (ret)
if (ret != 0)
return ret;
vx_buffer_h staging_buf;
ret |= vx_alloc_shared_mem(device, 64 * sizeof(uint32_t), &staging_buf);
if (ret)
ret = vx_alloc_shared_mem(device, 64 * sizeof(uint32_t), &staging_buf);
if (ret != 0)
return ret;
auto staging_ptr = (uint32_t*)vx_host_ptr(staging_buf);
for (unsigned core_id = 0; core_id < num_cores; ++core_id) {
ret |= vx_copy_from_dev(staging_buf, IO_ADDR_CSR + 64 * sizeof(uint32_t) * core_id, 64 * sizeof(uint32_t), 0);
ret = vx_copy_from_dev(staging_buf, IO_ADDR_CSR + 64 * sizeof(uint32_t) * core_id, 64 * sizeof(uint32_t), 0);
if (ret != 0) {
vx_buf_release(staging_buf);
return ret;
}
uint64_t instrs_per_core = get_csr_64(staging_ptr, CSR_MINSTRET);
uint64_t cycles_per_core = get_csr_64(staging_ptr, CSR_MCYCLE);
float IPC = (float)(double(instrs_per_core) / double(cycles_per_core));
@@ -305,5 +310,8 @@ extern int vx_dump_perf(vx_device_h device, FILE* stream) {
fprintf(stream, "PERF: memory average latency=%d cycles\n", mem_avg_lat);
#endif
// release allocated resources
vx_buf_release(staging_buf);
return ret;
}