99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
67 lines
1.2 KiB
C
67 lines
1.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation.
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* Copyright(c) 2013 6WIND S.A.
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*/
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#ifndef _RTE_CYCLES_X86_64_H_
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#define _RTE_CYCLES_X86_64_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "generic/rte_cycles.h"
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#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
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/* Global switch to use VMWARE mapping of TSC instead of RDTSC */
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extern int rte_cycles_vmware_tsc_map;
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#include <rte_branch_prediction.h>
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#endif
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#include <rte_common.h>
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#include <rte_config.h>
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static inline uint64_t
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rte_rdtsc(void)
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{
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union {
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uint64_t tsc_64;
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RTE_STD_C11
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struct {
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uint32_t lo_32;
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uint32_t hi_32;
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};
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} tsc;
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#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
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if (unlikely(rte_cycles_vmware_tsc_map)) {
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/* ecx = 0x10000 corresponds to the physical TSC for VMware */
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asm volatile("rdpmc" :
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"=a" (tsc.lo_32),
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"=d" (tsc.hi_32) :
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"c"(0x10000));
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return tsc.tsc_64;
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}
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#endif
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asm volatile("rdtsc" :
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"=a" (tsc.lo_32),
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"=d" (tsc.hi_32));
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return tsc.tsc_64;
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}
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static inline uint64_t
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rte_rdtsc_precise(void)
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{
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rte_mb();
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return rte_rdtsc();
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}
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static inline uint64_t
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rte_get_tsc_cycles(void) { return rte_rdtsc(); }
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTE_CYCLES_X86_64_H_ */
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