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1 | /* |
2 | * Copyright (c) 2014 Nicira, Inc. | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #ifndef OVS_NUMA_H | |
18 | #define OVS_NUMA_H 1 | |
19 | ||
20 | #include <limits.h> | |
21 | #include <stdbool.h> | |
22 | ||
23 | #include "compiler.h" | |
24 | ||
25 | #define OVS_CORE_UNSPEC INT_MAX | |
26 | #define OVS_SOCKET_UNSPEC INT_MAX | |
27 | ||
28 | #ifdef __linux__ | |
29 | ||
30 | void ovs_numa_init(void); | |
31 | bool ovs_numa_cpu_socket_id_is_valid(int sid); | |
32 | bool ovs_numa_cpu_core_id_is_valid(int cid); | |
33 | int ovs_numa_get_n_sockets(void); | |
34 | int ovs_numa_get_n_cores(void); | |
35 | int ovs_numa_get_n_cores_on_socket(int socket_id); | |
36 | int ovs_numa_get_n_unpinned_cores_on_socket(int socket_id); | |
37 | bool ovs_numa_try_pin_core_specific(int core_id); | |
38 | int ovs_numa_get_unpinned_core_any(void); | |
39 | int ovs_numa_get_unpinned_core_on_socket(int socket_id); | |
40 | void ovs_numa_unpin_core(int core_id); | |
41 | ||
42 | #else | |
43 | ||
44 | static inline void | |
45 | ovs_numa_init(void) | |
46 | { | |
47 | /* Nothing */ | |
48 | } | |
49 | ||
50 | static inline bool | |
51 | ovs_numa_cpu_socket_id_is_valid(int sid OVS_UNUSED) | |
52 | { | |
53 | return false; | |
54 | } | |
55 | ||
56 | static inline bool | |
57 | ovs_numa_cpu_core_id_is_valid(int cid OVS_UNUSED) | |
58 | { | |
59 | return false; | |
60 | } | |
61 | ||
62 | static inline int | |
63 | ovs_numa_get_n_sockets(void) | |
64 | { | |
65 | return OVS_SOCKET_UNSPEC; | |
66 | } | |
67 | ||
68 | static inline int | |
69 | ovs_numa_get_n_cores(void) | |
70 | { | |
71 | return OVS_CORE_UNSPEC; | |
72 | } | |
73 | ||
74 | static inline int | |
75 | ovs_numa_get_n_cores_on_socket(int socket_id OVS_UNUSED) | |
76 | { | |
77 | return OVS_CORE_UNSPEC; | |
78 | } | |
79 | ||
80 | static inline int | |
81 | ovs_numa_get_n_unpinned_cores_on_socket(int socket_id OVS_UNUSED) | |
82 | { | |
83 | return OVS_CORE_UNSPEC; | |
84 | } | |
85 | ||
86 | static inline bool | |
87 | ovs_numa_try_pin_core_specific(int core_id OVS_UNUSED) | |
88 | { | |
89 | return false; | |
90 | } | |
91 | ||
92 | static inline int | |
93 | ovs_numa_get_unpinned_core_any(void) | |
94 | { | |
95 | return OVS_CORE_UNSPEC; | |
96 | } | |
97 | ||
98 | static inline int | |
99 | ovs_numa_get_unpinned_core_on_socket(int socket_id OVS_UNUSED) | |
100 | { | |
101 | return OVS_CORE_UNSPEC; | |
102 | } | |
103 | ||
104 | static inline void | |
105 | ovs_numa_unpin_core(int core_id OVS_UNUSED) | |
106 | { | |
107 | /* Nothing */ | |
108 | } | |
109 | ||
110 | #endif /* __linux__ */ | |
111 | #endif /* ovs-thead.h */ |