Linux/include/uapi/linux/membarrier.h

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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1 #ifndef _UAPI_LINUX_MEMBARRIER_H 1 #ifndef _UAPI_LINUX_MEMBARRIER_H 2 #define _UAPI_LINUX_MEMBARRIER_H 2 #define _UAPI_LINUX_MEMBARRIER_H 3 3 4 /* 4 /* 5 * linux/membarrier.h 5 * linux/membarrier.h 6 * 6 * 7 * membarrier system call API 7 * membarrier system call API 8 * 8 * 9 * Copyright (c) 2010, 2015 Mathieu Desnoyers 9 * Copyright (c) 2010, 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> 10 * 10 * 11 * Permission is hereby granted, free of charg 11 * Permission is hereby granted, free of charge, to any person obtaining a copy 12 * of this software and associated documentati 12 * of this software and associated documentation files (the "Software"), to deal 13 * in the Software without restriction, includ 13 * in the Software without restriction, including without limitation the rights 14 * to use, copy, modify, merge, publish, distr 14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 15 * copies of the Software, and to permit perso 15 * copies of the Software, and to permit persons to whom the Software is 16 * furnished to do so, subject to the followin 16 * furnished to do so, subject to the following conditions: 17 * 17 * 18 * The above copyright notice and this permiss 18 * The above copyright notice and this permission notice shall be included in 19 * all copies or substantial portions of the S 19 * all copies or substantial portions of the Software. 20 * 20 * 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT W 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE W 22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINF 23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR 24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT 25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE O 26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 27 * SOFTWARE. 27 * SOFTWARE. 28 */ 28 */ 29 29 30 /** 30 /** 31 * enum membarrier_cmd - membarrier system cal 31 * enum membarrier_cmd - membarrier system call command 32 * @MEMBARRIER_CMD_QUERY: Query the set of s 32 * @MEMBARRIER_CMD_QUERY: Query the set of supported commands. It returns 33 * a bitmask of valid 33 * a bitmask of valid commands. 34 * @MEMBARRIER_CMD_GLOBAL: Execute a memory b !! 34 * @MEMBARRIER_CMD_SHARED: Execute a memory barrier on all running threads. 35 * Upon return from s 35 * Upon return from system call, the caller thread 36 * is ensured that al 36 * is ensured that all running threads have passed 37 * through a state wh 37 * through a state where all memory accesses to 38 * user-space address 38 * user-space addresses match program order between 39 * entry to and retur 39 * entry to and return from the system call 40 * (non-running threa 40 * (non-running threads are de facto in such a 41 * state). This cover 41 * state). This covers threads from all processes 42 * running on the sys 42 * running on the system. This command returns 0. 43 * @MEMBARRIER_CMD_GLOBAL_EXPEDITED: << 44 * Execute a memory b << 45 * of all processes w << 46 * with MEMBARRIER_CM << 47 * Upon return from s << 48 * is ensured that al << 49 * through a state wh << 50 * user-space address << 51 * entry to and retur << 52 * (non-running threa << 53 * state). This only << 54 * which registered w << 55 * MEMBARRIER_CMD_REG << 56 * This command retur << 57 * registration is ab << 58 * the barriers, it i << 59 * MEMBARRIER_CMD_GLO << 60 * non-registered pro << 61 * @MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED: << 62 * Register the proce << 63 * MEMBARRIER_CMD_GLO << 64 * barriers. Always r << 65 * @MEMBARRIER_CMD_PRIVATE_EXPEDITED: << 66 * Execute a memory b << 67 * thread belonging t << 68 * thread. Upon retur << 69 * caller thread is e << 70 * threads siblings h << 71 * where all memory a << 72 * addresses match pr << 73 * to and return from << 74 * (non-running threa << 75 * state). This only << 76 * same process as th << 77 * command returns 0 << 78 * "expedited" comman << 79 * the non-expedited << 80 * but have the downs << 81 * overhead. A proces << 82 * intent to use the << 83 * prior to using it, << 84 * returns -EPERM. << 85 * @MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED: << 86 * Register the proce << 87 * MEMBARRIER_CMD_PRI << 88 * returns 0. << 89 * @MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE << 90 * In addition to pro << 91 * guarantees describ << 92 * MEMBARRIER_CMD_PRI << 93 * the caller thread, << 94 * call, that all its << 95 * have executed a co << 96 * instruction. (arch << 97 * guarantee that non << 98 * core serializing i << 99 * resume user-space << 100 * covers threads fro << 101 * caller thread. Thi << 102 * success. The "expe << 103 * faster than the no << 104 * never block, but h << 105 * causing extra over << 106 * not implemented by << 107 * is returned. A pro << 108 * intent to use the << 109 * core command prior << 110 * this command retur << 111 * @MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_ << 112 * Register the proce << 113 * MEMBARRIER_CMD_PRI << 114 * If this command is << 115 * architecture, -EIN << 116 * Returns 0 on succe << 117 * @MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ: << 118 * Ensure the caller << 119 * system call, that << 120 * siblings have any << 121 * critical sections << 122 * parameter is 0; if << 123 * MEMBARRIER_CMD_FLA << 124 * then this operatio << 125 * on CPU indicated b << 126 * not implemented by << 127 * is returned. A pro << 128 * intent to use the << 129 * command prior to u << 130 * this command retur << 131 * @MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_ << 132 * Register the proce << 133 * MEMBARRIER_CMD_PRI << 134 * If this command is << 135 * architecture, -EIN << 136 * Returns 0 on succe << 137 * @MEMBARRIER_CMD_SHARED: << 138 * Alias to MEMBARRIE << 139 * header backward co << 140 * @MEMBARRIER_CMD_GET_REGISTRATIONS: << 141 * Returns a bitmask << 142 * registration comma << 143 * 43 * 144 * Command to be passed to the membarrier syst 44 * Command to be passed to the membarrier system call. The commands need to 145 * be a single bit each, except for MEMBARRIER 45 * be a single bit each, except for MEMBARRIER_CMD_QUERY which is assigned to 146 * the value 0. 46 * the value 0. 147 */ 47 */ 148 enum membarrier_cmd { 48 enum membarrier_cmd { 149 MEMBARRIER_CMD_QUERY !! 49 MEMBARRIER_CMD_QUERY = 0, 150 MEMBARRIER_CMD_GLOBAL !! 50 MEMBARRIER_CMD_SHARED = (1 << 0), 151 MEMBARRIER_CMD_GLOBAL_EXPEDITED << 152 MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDIT << 153 MEMBARRIER_CMD_PRIVATE_EXPEDITED << 154 MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDI << 155 MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_ << 156 MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDI << 157 MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ << 158 MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDI << 159 MEMBARRIER_CMD_GET_REGISTRATIONS << 160 << 161 /* Alias for header backward compatibi << 162 MEMBARRIER_CMD_SHARED << 163 }; << 164 << 165 enum membarrier_cmd_flag { << 166 MEMBARRIER_CMD_FLAG_CPU = (1 < << 167 }; 51 }; 168 52 169 #endif /* _UAPI_LINUX_MEMBARRIER_H */ 53 #endif /* _UAPI_LINUX_MEMBARRIER_H */ 170 54

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TOMOYO Linux Cross Reference
Linux/include/uapi/linux/membarrier.h

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Differences between /include/uapi/linux/membarrier.h (Version linux-6.12-rc7) and /include/uapi/linux/membarrier.h (Version linux-4.11.12)

TOMOYO Linux Cross Reference Linux/include/uapi/linux/membarrier.h

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Differences between /include/uapi/linux/membarrier.h (Version linux-6.12-rc7) and /include/uapi/linux/membarrier.h (Version linux-4.11.12)

TOMOYO Linux Cross Reference
Linux/include/uapi/linux/membarrier.h