#include <rte_log.h>
#include <rte_cycles.h>
#include <rte_pause.h>
+#include <rte_eal.h>
#include "eal_private.h"
+#include "eal_memcfg.h"
/* The frequency of the RDTSC timer resolution */
static uint64_t eal_tsc_resolution_hz;
rte_pause();
}
-void __rte_experimental
+void
rte_delay_us_sleep(unsigned int us)
{
struct timespec wait[2];
static uint64_t
estimate_tsc_freq(void)
{
+#define CYC_PER_10MHZ 1E7
RTE_LOG(WARNING, EAL, "WARNING: TSC frequency estimated roughly"
" - clock timings may be less accurate.\n");
/* assume that the sleep(1) will sleep for 1 second */
uint64_t start = rte_rdtsc();
sleep(1);
- return rte_rdtsc() - start;
+ /* Round up to 10Mhz. 1E7 ~ 10Mhz */
+ return RTE_ALIGN_MUL_NEAR(rte_rdtsc() - start, CYC_PER_10MHZ);
}
void
set_tsc_freq(void)
{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
uint64_t freq;
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ /*
+ * Just use the primary process calculated TSC rate in any
+ * secondary process. It avoids any unnecessary overhead on
+ * systems where arch-specific frequency detection is not
+ * available.
+ */
+ eal_tsc_resolution_hz = mcfg->tsc_hz;
+ return;
+ }
+
freq = get_tsc_freq_arch();
if (!freq)
freq = get_tsc_freq();
RTE_LOG(DEBUG, EAL, "TSC frequency is ~%" PRIu64 " KHz\n", freq / 1000);
eal_tsc_resolution_hz = freq;
+ mcfg->tsc_hz = freq;
}
void rte_delay_us_callback_register(void (*userfunc)(unsigned int))