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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _RTE_CPUFLAGS_H_
#define _RTE_CPUFLAGS_H_
/**
* @file
* Architecture specific API to determine available CPU features at runtime.
*/
#include "rte_common.h"
#include <errno.h>
/**
* Enumeration of all CPU features supported
*/
__extension__
enum rte_cpu_flag_t;
/**
* Get name of CPU flag
*
* @param feature
* CPU flag ID
* @return
* flag name
* NULL if flag ID is invalid
*/
__extension__
const char *
rte_cpu_get_flag_name(enum rte_cpu_flag_t feature);
/**
* Function for checking a CPU flag availability
*
* @param feature
* CPU flag to query CPU for
* @return
* 1 if flag is available
* 0 if flag is not available
* -ENOENT if flag is invalid
*/
__extension__
int
rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature);
/**
* This function checks that the currently used CPU supports the CPU features
* that were specified at compile time. It is called automatically within the
* EAL, so does not need to be used by applications.
*/
__rte_deprecated
void
rte_cpu_check_supported(void);
/**
* This function checks that the currently used CPU supports the CPU features
* that were specified at compile time. It is called automatically within the
* EAL, so does not need to be used by applications. This version returns a
* result so that decisions may be made (for instance, graceful shutdowns).
*/
int
rte_cpu_is_supported(void);
#endif /* _RTE_CPUFLAGS_H_ */
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