1 /*- 2 * Copyright (c) 2025 The FreeBSD Foundation 3 * Copyright (c) 2025 Jean-Sébastien Pédron <dumbbell@FreeBSD.org> 4 * 5 * This software was developed by Jean-Sébastien Pédron under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _LINUXKPI_ASM_TOPOLOGY_H_ 31 #define _LINUXKPI_ASM_TOPOLOGY_H_ 32 33 #if defined(__i386__) || defined(__amd64__) 34 #include <sys/smp.h> 35 36 /* 37 * The following functions are defined in `arch/x86/include/asm/topology.h` 38 * and thus are specific to i386 and amd64. 39 */ 40 41 static inline unsigned int 42 topology_num_cores_per_package(void) 43 { 44 return (mp_ncores); 45 } 46 47 static inline unsigned int 48 topology_num_threads_per_package(void) 49 { 50 return (mp_ncpus); 51 } 52 #endif 53 54 #endif /* _LINUXKPI_ASM_TOPOLOGY_H_ */ 55