Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/i386/include/pcpu.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) Peter Wemm 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _MACHINE_PCPU_H_ 32 #define _MACHINE_PCPU_H_ 33 34 #include <machine/segments.h> 35 #include <machine/tss.h> 36 37 #include <sys/_lock.h> 38 #include <sys/_mutex.h> 39 40 struct monitorbuf { 41 int idle_state; /* Used by cpu_idle_mwait. */ 42 int stop_state; /* Used by cpustop_handler. */ 43 char padding[128 - (2 * sizeof(int))]; 44 }; 45 _Static_assert(sizeof(struct monitorbuf) == 128, "2x cache line"); 46 47 /* 48 * The SMP parts are setup in pmap.c and machdep.c for the BSP, and 49 * pmap.c and mp_machdep.c sets up the data for the AP's to "see" when 50 * they awake. The reason for doing it via a struct is so that an 51 * array of pointers to each CPU's data can be set up for things like 52 * "check curproc on all other processors" 53 */ 54 55 #define PCPU_MD_FIELDS \ 56 struct monitorbuf pc_monitorbuf __aligned(128); /* cache line */\ 57 struct pcpu *pc_prvspace; /* Self-reference */ \ 58 struct pmap *pc_curpmap; \ 59 struct segment_descriptor pc_common_tssd; \ 60 struct segment_descriptor *pc_tss_gdt; \ 61 struct segment_descriptor *pc_fsgs_gdt; \ 62 struct i386tss *pc_common_tssp; \ 63 u_int pc_kesp0; \ 64 u_int pc_trampstk; \ 65 int pc_currentldt; \ 66 u_int pc_acpi_id; /* ACPI CPU id */ \ 67 u_int pc_apic_id; \ 68 int pc_private_tss; /* Flag indicating private tss*/\ 69 u_int pc_cmci_mask; /* MCx banks for CMCI */ \ 70 u_int pc_vcpu_id; /* Xen vCPU ID */ \ 71 struct mtx pc_cmap_lock; \ 72 void *pc_cmap_pte1; \ 73 void *pc_cmap_pte2; \ 74 caddr_t pc_cmap_addr1; \ 75 caddr_t pc_cmap_addr2; \ 76 vm_offset_t pc_qmap_addr; /* KVA for temporary mappings */\ 77 vm_offset_t pc_copyout_maddr; \ 78 vm_offset_t pc_copyout_saddr; \ 79 struct mtx pc_copyout_mlock; \ 80 struct sx pc_copyout_slock; \ 81 char *pc_copyout_buf; \ 82 vm_offset_t pc_pmap_eh_va; \ 83 caddr_t pc_pmap_eh_ptep; \ 84 uint32_t pc_smp_tlb_done; /* TLB op acknowledgement */ \ 85 uint32_t pc_ibpb_set; \ 86 void *pc_mds_buf; \ 87 void *pc_mds_buf64; \ 88 uint32_t pc_pad[4]; \ 89 uint8_t pc_mds_tmp[64]; \ 90 u_int pc_ipi_bitmap; \ 91 char __pad[3518] 92 93 #ifdef _KERNEL 94 95 #define MONITOR_STOPSTATE_RUNNING 0 96 #define MONITOR_STOPSTATE_STOPPED 1 97 98 /* 99 * Evaluates to the byte offset of the per-cpu variable name. 100 */ 101 #define __pcpu_offset(name) \ 102 __offsetof(struct pcpu, name) 103 104 /* 105 * Evaluates to the type of the per-cpu variable name. 106 */ 107 #define __pcpu_type(name) \ 108 __typeof(((struct pcpu *)0)->name) 109 110 /* 111 * Evaluates to the address of the per-cpu variable name. 112 */ 113 #define __PCPU_PTR(name) __extension__ ({ \ 114 __pcpu_type(name) *__p; \ 115 \ 116 __asm __volatile("movl %%fs:%1,%0; addl %2,%0" \ 117 : "=r" (__p) \ 118 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))), \ 119 "i" (__pcpu_offset(name))); \ 120 \ 121 __p; \ 122 }) 123 124 /* 125 * Evaluates to the value of the per-cpu variable name. 126 */ 127 #define __PCPU_GET(name) __extension__ ({ \ 128 __pcpu_type(name) __res; \ 129 struct __s { \ 130 u_char __b[MIN(sizeof(__res), 4)]; \ 131 } __s; \ 132 \ 133 if (sizeof(__res) == 1 || sizeof(__res) == 2 || \ 134 sizeof(__res) == 4) { \ 135 __asm __volatile("mov %%fs:%1,%0" \ 136 : "=r" (__s) \ 137 : "m" (*(struct __s *)(__pcpu_offset(name)))); \ 138 *(struct __s *)(void *)&__res = __s; \ 139 } else { \ 140 __res = *__PCPU_PTR(name); \ 141 } \ 142 __res; \ 143 }) 144 145 /* 146 * Adds a value of the per-cpu counter name. The implementation 147 * must be atomic with respect to interrupts. 148 */ 149 #define __PCPU_ADD(name, val) do { \ 150 __pcpu_type(name) __val; \ 151 struct __s { \ 152 u_char __b[MIN(sizeof(__val), 4)]; \ 153 } __s; \ 154 \ 155 __val = (val); \ 156 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \ 157 sizeof(__val) == 4) { \ 158 __s = *(struct __s *)(void *)&__val; \ 159 __asm __volatile("add %1,%%fs:%0" \ 160 : "=m" (*(struct __s *)(__pcpu_offset(name))) \ 161 : "r" (__s)); \ 162 } else \ 163 *__PCPU_PTR(name) += __val; \ 164 } while (0) 165 166 /* 167 * Sets the value of the per-cpu variable name to value val. 168 */ 169 #define __PCPU_SET(name, val) do { \ 170 __pcpu_type(name) __val; \ 171 struct __s { \ 172 u_char __b[MIN(sizeof(__val), 4)]; \ 173 } __s; \ 174 \ 175 __val = (val); \ 176 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \ 177 sizeof(__val) == 4) { \ 178 __s = *(struct __s *)(void *)&__val; \ 179 __asm __volatile("mov %1,%%fs:%0" \ 180 : "=m" (*(struct __s *)(__pcpu_offset(name))) \ 181 : "r" (__s)); \ 182 } else { \ 183 *__PCPU_PTR(name) = __val; \ 184 } \ 185 } while (0) 186 187 #define get_pcpu() __extension__ ({ \ 188 struct pcpu *__pc; \ 189 \ 190 __asm __volatile("movl %%fs:%1,%0" \ 191 : "=r" (__pc) \ 192 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace)))); \ 193 __pc; \ 194 }) 195 196 #define PCPU_GET(member) __PCPU_GET(pc_ ## member) 197 #define PCPU_ADD(member, val) __PCPU_ADD(pc_ ## member, val) 198 #define PCPU_PTR(member) __PCPU_PTR(pc_ ## member) 199 #define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val) 200 201 #define IS_BSP() (PCPU_GET(cpuid) == 0) 202 203 #endif /* _KERNEL */ 204 205 #endif /* !_MACHINE_PCPU_H_ */
Cache object: de31e11cd2a44501856e14b4f8dcaf73
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]