1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* 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 Intel Corporation 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.
*/
#ifndef _RTE_CPUFLAGS_H_
#define _RTE_CPUFLAGS_H_
/**
* @file
* Architecture specific API to determine available CPU features at runtime.
*/
#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.
*/
void
rte_cpu_check_supported(void);
#endif /* _RTE_CPUFLAGS_H_ */
|
