ceph/src/seastar/dpdk/lib/librte_eal/common/arch/arm/rte_cycles.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015 Cavium, Inc
   3  */
   4
   5 #include "eal_private.h"
   6
   7 uint64_t
   8 get_tsc_freq_arch(void)
   9 {
  10 #if defined RTE_ARCH_ARM64 && !defined RTE_ARM_EAL_RDTSC_USE_PMU
  11         uint64_t freq;
  12         asm volatile("mrs %0, cntfrq_el0" : "=r" (freq));
  13         return freq;
  14 #else
  15         return 0;
  16 #endif
  17 }