2015-07-25 12:36, Ravi Kerur
> static int
> set_tsc_freq_from_sysctl(void)
> {
> size_t sz;
> int tmp;
> + uint64_t tsc_hz;
>
> sz = sizeof(tmp);
> tmp = 0;
> @@ -94,42 +77,23 @@ set_tsc_freq_from_sysctl(void)
> else if (tmp != 1)
> RTE_LOG(WARNING, EAL, "TSC is not invariant\n");
>
> - sz = sizeof(eal_tsc_resolution_hz);
> - if (sysctlbyname("machdep.tsc_freq", &eal_tsc_resolution_hz, &sz, NULL,
> 0)) {
> + sz = sizeof(tsc_hz);
> + if (sysctlbyname("machdep.tsc_freq", &tsc_hz, &sz, NULL, 0)) {
> RTE_LOG(WARNING, EAL, "%s\n", strerror(errno));
> return -1;
> }
> + rte_set_tsc_hz(tsc_hz);
>
> return 0;
> }
[...]
> --- /dev/null
> +++ b/lib/librte_eal/common/eal_common_timer.c
> +void
> +rte_set_tsc_hz(uint64_t tsc_hz)
> +{
> + eal_tsc_resolution_hz = tsc_hz;
> +}
[...]
> +void
> +set_tsc_freq(void)
> +{
> + if (set_tsc_freq_from_clock() < 0)
> + set_tsc_freq_fallback();
It would be simpler to get value from return of these functions
and store it in eal_tsc_resolution_hz here.
