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[v1.05] Use UNKNOWN_DATA instead of -1 in frequency measurement

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Dr-Noob
2024-07-11 22:10:00 +01:00
parent 1ed3a0f2bf
commit 7c947bdf64
1 changed files with 5 additions and 4 deletions
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9
src/common/freq.c
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@@ -13,6 +13,7 @@
#include <linux/perf_event.h> #include <linux/perf_event.h>
#include "global.h" #include "global.h"
#include "cpu.h"
static long static long
perf_event_open(struct perf_event_attr *hw_event, pid_t pid, perf_event_open(struct perf_event_attr *hw_event, pid_t pid,
@@ -158,7 +159,7 @@ uint64_t get_num_iters_from_freq(double frequency) {
int64_t measure_max_frequency(uint32_t core) { int64_t measure_max_frequency(uint32_t core) {
if (!bind_to_cpu(core)) { if (!bind_to_cpu(core)) {
printErr("Failed binding the process to CPU %d", core); printErr("Failed binding the process to CPU %d", core);
return -1; return UNKNOWN_DATA;
} }
// First, get very rough estimation of clock cycle to // First, get very rough estimation of clock cycle to
@@ -166,11 +167,11 @@ int64_t measure_max_frequency(uint32_t core) {
double estimation_freq, frequency; double estimation_freq, frequency;
uint64_t iters = 100000; uint64_t iters = 100000;
if (measure_freq_iters(iters, core, &estimation_freq) == -1) if (measure_freq_iters(iters, core, &estimation_freq) == -1)
return -1; return UNKNOWN_DATA;
if (estimation_freq <= 0.0) { if (estimation_freq <= 0.0) {
printErr("First frequency measurement yielded an invalid value: %f", estimation_freq); printErr("First frequency measurement yielded an invalid value: %f", estimation_freq);
return -1; return UNKNOWN_DATA;
} }
iters = get_num_iters_from_freq(estimation_freq); iters = get_num_iters_from_freq(estimation_freq);
printWarn("Running frequency measurement with %ld iterations on core %d...", iters, core); printWarn("Running frequency measurement with %ld iterations on core %d...", iters, core);
@@ -181,7 +182,7 @@ int64_t measure_max_frequency(uint32_t core) {
fflush(stdout); fflush(stdout);
if (measure_freq_iters(iters, core, &frequency) == -1) if (measure_freq_iters(iters, core, &frequency) == -1)
return -1; return UNKNOWN_DATA;
// Clean screen once measurement is finished // Clean screen once measurement is finished
printf("\r%*c\r", (int) strlen(frequency_banner), ' '); printf("\r%*c\r", (int) strlen(frequency_banner), ' ');