| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Regents of the University of California |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation, version 2. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #ifndef _ASM_RISCV_SMP_H |
| 15 | #define _ASM_RISCV_SMP_H |
| 16 | |
| 17 | /* This both needs asm-offsets.h and is used when generating it. */ |
| 18 | #ifndef GENERATING_ASM_OFFSETS |
| 19 | #include <asm/asm-offsets.h> |
| 20 | #endif |
| 21 | |
| 22 | #include <linux/cpumask.h> |
| 23 | #include <linux/irqreturn.h> |
| 24 | |
| 25 | #ifdef CONFIG_SMP |
| 26 | |
| 27 | /* SMP initialization hook for setup_arch */ |
| 28 | void __init setup_smp(void); |
| 29 | |
| 30 | /* Hook for the generic smp_call_function_many() routine. */ |
| 31 | void arch_send_call_function_ipi_mask(struct cpumask *mask); |
| 32 | |
| 33 | /* Hook for the generic smp_call_function_single() routine. */ |
| 34 | void arch_send_call_function_single_ipi(int cpu); |
| 35 | |
| 36 | /* |
| 37 | * This is particularly ugly: it appears we can't actually get the definition |
| 38 | * of task_struct here, but we need access to the CPU this task is running on. |
| 39 | * Instead of using C we're using asm-offsets.h to get the current processor |
| 40 | * ID. |
| 41 | */ |
| 42 | #define raw_smp_processor_id() (*((int*)((char*)get_current() + TASK_TI_CPU))) |
| 43 | |
| 44 | #endif /* CONFIG_SMP */ |
| 45 | |
| 46 | #endif /* _ASM_RISCV_SMP_H */ |