diff options
| -rw-r--r-- | src/vppinfra/time.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vppinfra/time.c b/src/vppinfra/time.c index 2bdb9da4b39..168d7375915 100644 --- a/src/vppinfra/time.c +++ b/src/vppinfra/time.c @@ -147,6 +147,12 @@ os_cpu_clock_frequency (void) if (clib_cpu_supports_invariant_tsc ()) return estimate_clock_frequency (1e-3); +#if defined (__aarch64__) + u64 tsc; + asm volatile ("mrs %0, CNTFRQ_EL0":"=r" (tsc)); + return (f64) tsc; +#endif + /* First try /sys version. */ cpu_freq = clock_frequency_from_sys_filesystem (); if (cpu_freq != 0) |