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05/09/2024 07:14:12 AM
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Kbuild
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acenv.h
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acpi.h
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alternative.h
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arch_gicv3.h
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arch_timer.h
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arm-cci.h
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asm-bug.h
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asm-offsets.h
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asm-uaccess.h
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assembler.h
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atomic.h
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atomic_ll_sc.h
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atomic_lse.h
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barrier.h
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bitops.h
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bitrev.h
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boot.h
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brk-imm.h
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bug.h
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cache.h
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cacheflush.h
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checksum.h
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clocksource.h
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cmpxchg.h
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compat.h
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compiler.h
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cpu.h
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cpu_ops.h
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cpucaps.h
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cpufeature.h
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cpuidle.h
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cputype.h
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current.h
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daifflags.h
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dcc.h
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debug-monitors.h
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device.h
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dma-mapping.h
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dmi.h
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efi.h
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elf.h
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esr.h
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exception.h
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exec.h
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extable.h
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fb.h
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fixmap.h
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fpsimd.h
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fpsimdmacros.h
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ftrace.h
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futex.h
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hardirq.h
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hugetlb.h
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hw_breakpoint.h
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hwcap.h
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hypervisor.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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kasan.h
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kernel-pgtable.h
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kexec.h
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kgdb.h
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kprobes.h
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kvm_arm.h
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kvm_asm.h
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kvm_coproc.h
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kvm_emulate.h
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kvm_host.h
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kvm_hyp.h
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kvm_mmio.h
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kvm_mmu.h
11.72 KB
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linkage.h
114 bytes
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lse.h
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memblock.h
720 bytes
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memory.h
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mmu.h
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mmu_context.h
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mmzone.h
266 bytes
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module.h
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neon.h
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numa.h
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page-def.h
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page.h
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paravirt.h
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pci.h
878 bytes
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percpu.h
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perf_event.h
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pgalloc.h
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pgtable-hwdef.h
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pgtable-prot.h
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pgtable-types.h
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pgtable.h
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probes.h
1022 bytes
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proc-fns.h
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processor.h
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ptdump.h
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ptrace.h
9 KB
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sdei.h
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seccomp.h
714 bytes
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sections.h
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shmparam.h
965 bytes
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signal32.h
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simd.h
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smp.h
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smp_plat.h
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sparsemem.h
771 bytes
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spinlock.h
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spinlock_types.h
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stack_pointer.h
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stackprotector.h
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stacktrace.h
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stage2_pgtable-nopmd.h
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stage2_pgtable-nopud.h
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stage2_pgtable.h
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stat.h
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string.h
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suspend.h
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sync_bitops.h
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syscall.h
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sysreg.h
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system_misc.h
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thread_info.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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unistd.h
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unistd32.h
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uprobes.h
777 bytes
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vdso.h
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vdso_datapage.h
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vectors.h
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virt.h
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vmap_stack.h
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word-at-a-time.h
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xen
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05/09/2024 07:14:16 AM
rwxr-xr-x
Editing: smp.h
Close
/* * Copyright (C) 2012 ARM Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * 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. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __ASM_SMP_H #define __ASM_SMP_H /* Values for secondary_data.status */ #define CPU_MMU_OFF (-1) #define CPU_BOOT_SUCCESS (0) /* The cpu invoked ops->cpu_die, synchronise it with cpu_kill */ #define CPU_KILL_ME (1) /* The cpu couldn't die gracefully and is looping in the kernel */ #define CPU_STUCK_IN_KERNEL (2) /* Fatal system error detected by secondary CPU, crash the system */ #define CPU_PANIC_KERNEL (3) #ifndef __ASSEMBLY__ #include <asm/percpu.h> #include <linux/threads.h> #include <linux/cpumask.h> #include <linux/thread_info.h> DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number); /* * We don't use this_cpu_read(cpu_number) as that has implicit writes to * preempt_count, and associated (compiler) barriers, that we'd like to avoid * the expense of. If we're preemptible, the value can be stale at use anyway. * And we can't use this_cpu_ptr() either, as that winds up recursing back * here under CONFIG_DEBUG_PREEMPT=y. */ #define raw_smp_processor_id() (*raw_cpu_ptr(&cpu_number)) struct seq_file; /* * generate IPI list text */ extern void show_ipi_list(struct seq_file *p, int prec); /* * Called from C code, this handles an IPI. */ extern void handle_IPI(int ipinr, struct pt_regs *regs); /* * Discover the set of possible CPUs and determine their * SMP operations. */ extern void smp_init_cpus(void); /* * Provide a function to raise an IPI cross call on CPUs in callmap. */ extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int)); extern void (*__smp_cross_call)(const struct cpumask *, unsigned int); /* * Called from the secondary holding pen, this is the secondary CPU entry point. */ asmlinkage void secondary_start_kernel(void); /* * Initial data for bringing up a secondary CPU. * @stack - sp for the secondary CPU * @status - Result passed back from the secondary CPU to * indicate failure. */ struct secondary_data { void *stack; struct task_struct *task; long status; }; extern struct secondary_data secondary_data; extern long __early_cpu_boot_status; extern void secondary_entry(void); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); #ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask); #else static inline void arch_send_wakeup_ipi_mask(const struct cpumask *mask) { BUILD_BUG(); } #endif extern int __cpu_disable(void); extern void __cpu_die(unsigned int cpu); extern void cpu_die(void); extern void cpu_die_early(void); static inline void cpu_park_loop(void) { for (;;) { wfe(); wfi(); } } static inline void update_cpu_boot_status(int val) { WRITE_ONCE(secondary_data.status, val); /* Ensure the visibility of the status update */ dsb(ishst); } /* * The calling secondary CPU has detected serious configuration mismatch, * which calls for a kernel panic. Update the boot status and park the calling * CPU. */ static inline void cpu_panic_kernel(void) { update_cpu_boot_status(CPU_PANIC_KERNEL); cpu_park_loop(); } /* * If a secondary CPU enters the kernel but fails to come online, * (e.g. due to mismatched features), and cannot exit the kernel, * we increment cpus_stuck_in_kernel and leave the CPU in a * quiesecent loop within the kernel text. The memory containing * this loop must not be re-used for anything else as the 'stuck' * core is executing it. * * This function is used to inhibit features like kexec and hibernate. */ bool cpus_are_stuck_in_kernel(void); extern void crash_smp_send_stop(void); extern bool smp_crash_stop_failed(void); #endif /* ifndef __ASSEMBLY__ */ #endif /* ifndef __ASM_SMP_H */