#include <unistd.h>
#include <inttypes.h>
#include <sys/types.h>
-#include <sys/sysctl.h>
#include <errno.h>
#include <rte_common.h>
/* The frequency of the RDTSC timer resolution */
static uint64_t eal_tsc_resolution_hz;
+/* Pointer to user delay function */
+void (*rte_delay_us)(unsigned int) = NULL;
+
void
-rte_delay_us(unsigned us)
+rte_delay_us_block(unsigned int us)
{
const uint64_t start = rte_get_timer_cycles();
const uint64_t ticks = (uint64_t)us * rte_get_timer_hz() / 1E6;
void
set_tsc_freq(void)
{
- uint64_t freq = get_tsc_freq() || estimate_tsc_freq();
- RTE_LOG(INFO, EAL, "TSC frequency is ~%" PRIu64 " KHz\n", freq / 1000);
+ uint64_t freq = get_tsc_freq();
+
+ if (!freq)
+ freq = estimate_tsc_freq();
+
+ RTE_LOG(DEBUG, EAL, "TSC frequency is ~%" PRIu64 " KHz\n", freq / 1000);
eal_tsc_resolution_hz = freq;
}
+
+void rte_delay_us_callback_register(void (*userfunc)(unsigned int))
+{
+ rte_delay_us = userfunc;
+}
+
+static void __attribute__((constructor))
+rte_timer_init(void)
+{
+ /* set rte_delay_us_block as a delay function */
+ rte_delay_us_callback_register(rte_delay_us_block);
+}