diff options
Diffstat (limited to 'lib/librte_eal/common/arch/arm')
| -rw-r--r-- | lib/librte_eal/common/arch/arm/rte_cpuflags.c | 2 | ||||
| -rw-r--r-- | lib/librte_eal/common/arch/arm/rte_cycles.c | 45 |
2 files changed, 46 insertions, 1 deletions
diff --git a/lib/librte_eal/common/arch/arm/rte_cpuflags.c b/lib/librte_eal/common/arch/arm/rte_cpuflags.c index 5636e9c1..88f1cbe3 100644 --- a/lib/librte_eal/common/arch/arm/rte_cpuflags.c +++ b/lib/librte_eal/common/arch/arm/rte_cpuflags.c @@ -137,7 +137,7 @@ rte_cpu_get_features(hwcap_registers_t out) _Elfx_auxv_t auxv; auxv_fd = open("/proc/self/auxv", O_RDONLY); - assert(auxv_fd); + assert(auxv_fd != -1); while (read(auxv_fd, &auxv, sizeof(auxv)) == sizeof(auxv)) { if (auxv.a_type == AT_HWCAP) { out[REG_HWCAP] = auxv.a_un.a_val; diff --git a/lib/librte_eal/common/arch/arm/rte_cycles.c b/lib/librte_eal/common/arch/arm/rte_cycles.c new file mode 100644 index 00000000..3e31e5be --- /dev/null +++ b/lib/librte_eal/common/arch/arm/rte_cycles.c @@ -0,0 +1,45 @@ +/* + * BSD LICENSE + * + * Copyright (C) Cavium, Inc. 2015. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Cavium, Inc nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "eal_private.h" + +uint64_t +get_tsc_freq_arch(void) +{ +#if defined RTE_ARCH_ARM64 && !defined RTE_ARM_EAL_RDTSC_USE_PMU + uint64_t freq; + asm volatile("mrs %0, cntfrq_el0" : "=r" (freq)); + return freq; +#else + return 0; +#endif +} |