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05/09/2024 07:14:13 AM
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Kbuild
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asm-offsets.h
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atomic.h
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atomic_32.h
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atomic_64.h
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backtrace.h
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barrier.h
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bitops.h
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bitops_64.h
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cache.h
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cacheflush.h
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checksum.h
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cmpxchg.h
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compat.h
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current.h
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delay.h
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device.h
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div64.h
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dma-mapping.h
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dma.h
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elf.h
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fixmap.h
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ftrace.h
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futex.h
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hardirq.h
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hardwall.h
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highmem.h
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homecache.h
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hugetlb.h
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hv_driver.h
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ide.h
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insn.h
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io.h
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irq.h
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irq_work.h
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irqflags.h
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jump_label.h
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kdebug.h
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kexec.h
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kgdb.h
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kmap_types.h
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kprobes.h
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linkage.h
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mmu.h
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mmu_context.h
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mmzone.h
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module.h
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page.h
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pci.h
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percpu.h
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perf_event.h
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pgalloc.h
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pgtable.h
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pgtable_32.h
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pgtable_64.h
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pmc.h
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processor.h
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ptrace.h
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sections.h
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setup.h
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sigframe.h
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signal.h
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smp.h
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spinlock.h
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spinlock_32.h
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spinlock_64.h
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spinlock_types.h
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stack.h
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string.h
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switch_to.h
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syscall.h
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syscalls.h
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thread_info.h
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tile-desc.h
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tile-desc_32.h
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tile-desc_64.h
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timex.h
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tlb.h
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tlbflush.h
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topology.h
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traps.h
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uaccess.h
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unaligned.h
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unistd.h
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user.h
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vdso.h
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vga.h
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word-at-a-time.h
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Editing: smp.h
Close
/* * Copyright 2010 Tilera Corporation. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for * more details. */ #ifndef _ASM_TILE_SMP_H #define _ASM_TILE_SMP_H #ifdef CONFIG_SMP #include <asm/processor.h> #include <linux/cpumask.h> #include <linux/irqreturn.h> #include <hv/hypervisor.h> /* Set up this tile to support receiving hypervisor messages */ void init_messaging(void); /* Set up this tile to support receiving device interrupts and IPIs. */ void init_per_tile_IRQs(void); /* Send a message to processors specified in mask */ void send_IPI_many(const struct cpumask *mask, int tag); /* Send a message to all but the sending processor */ void send_IPI_allbutself(int tag); /* Send a message to a specific processor */ void send_IPI_single(int dest, int tag); /* Process an IPI message */ void evaluate_message(int tag); /* Boot a secondary cpu */ void online_secondary(void); /* Topology of the supervisor tile grid, and coordinates of boot processor */ extern HV_Topology smp_topology; /* Accessors for grid size */ #define smp_height (smp_topology.height) #define smp_width (smp_topology.width) /* Convenience functions for converting cpu <-> coords. */ static inline int cpu_x(int cpu) { return cpu % smp_width; } static inline int cpu_y(int cpu) { return cpu / smp_width; } static inline int xy_to_cpu(int x, int y) { return y * smp_width + x; } /* Hypervisor message tags sent via the tile send_IPI*() routines. */ #define MSG_TAG_START_CPU 1 #define MSG_TAG_STOP_CPU 2 #define MSG_TAG_CALL_FUNCTION_MANY 3 #define MSG_TAG_CALL_FUNCTION_SINGLE 4 #define MSG_TAG_IRQ_WORK 5 /* Hook for the generic smp_call_function_many() routine. */ static inline void arch_send_call_function_ipi_mask(struct cpumask *mask) { send_IPI_many(mask, MSG_TAG_CALL_FUNCTION_MANY); } /* Hook for the generic smp_call_function_single() routine. */ static inline void arch_send_call_function_single_ipi(int cpu) { send_IPI_single(cpu, MSG_TAG_CALL_FUNCTION_SINGLE); } /* Print out the boot string describing which cpus were disabled. */ void print_disabled_cpus(void); #else /* !CONFIG_SMP */ #define smp_master_cpu 0 #define smp_height 1 #define smp_width 1 #define cpu_x(cpu) 0 #define cpu_y(cpu) 0 #define xy_to_cpu(x, y) 0 #endif /* !CONFIG_SMP */ /* Which cpus may be used as the lotar in a page table entry. */ extern struct cpumask cpu_lotar_map; #define cpu_is_valid_lotar(cpu) cpumask_test_cpu((cpu), &cpu_lotar_map) /* Which processors are used for hash-for-home mapping */ extern struct cpumask hash_for_home_map; /* Which cpus can have their cache flushed by hv_flush_remote(). */ extern struct cpumask cpu_cacheable_map; #define cpu_cacheable(cpu) cpumask_test_cpu((cpu), &cpu_cacheable_map) /* Convert an HV_LOTAR value into a cpu. */ static inline int hv_lotar_to_cpu(HV_LOTAR lotar) { return HV_LOTAR_X(lotar) + (HV_LOTAR_Y(lotar) * smp_width); } /* * Extension of <linux/cpumask.h> functionality when you just want * to express a mask or suppression or inclusion region without * being too concerned about exactly which cpus are valid in that region. */ int bitmap_parselist_crop(const char *bp, unsigned long *maskp, int nmaskbits); #define cpulist_parse_crop(buf, dst) \ __cpulist_parse_crop((buf), (dst), NR_CPUS) static inline int __cpulist_parse_crop(const char *buf, struct cpumask *dstp, int nbits) { return bitmap_parselist_crop(buf, cpumask_bits(dstp), nbits); } /* Initialize the IPI subsystem. */ void ipi_init(void); /* Function for start-cpu message to cause us to jump to. */ extern unsigned long start_cpu_function_addr; #endif /* _ASM_TILE_SMP_H */