| Quellcodebibliothek Statistik Leitseite products/sources/formale Sprachen/C/Linux/mm/ (Open Source Betriebssystem Version 6.17.9©) Datei vom 24.10.2025 mit Größe 1 kB |
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Quelle init-mm.c Sprache: C |
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// SPDX-License-Identifier: GPL-2.0
#include <linux/mm_types.h> #include <linux/maple_tree.h> #include <linux/rwsem.h> #include <linux/spinlock.h> #include <linux/list.h> #include <linux/cpumask.h> #include <linux/mman.h> #include <linux/pgtable.h> #include <linux/atomic.h> #include <linux/user_namespace.h> #include <linux/iommu.h> #include <asm/mmu.h> #ifndef INIT_MM_CONTEXT #define INIT_MM_CONTEXT(name) #endif const struct vm_operations_struct vma_dummy_vm_ops; /* * For dynamically allocated mm_structs, there is a dynamically sized cpumask * at the end of the structure, the size of which depends on the maximum CPU * number the system can see. That way we allocate only as much memory for * mm_cpumask() as needed for the hundreds, or thousands of processes that * a system typically runs. * * Since there is only one init_mm in the entire system, keep it simple * and size this cpu_bitmask to NR_CPUS. */ struct mm_struct init_mm = { .mm_mt = MTREE_INIT_EXT(mm_mt, MM_MT_FLAGS, init_mm.mmap_lock), .pgd = swapper_pg_dir, .mm_users = ATOMIC_INIT(2), .mm_count = ATOMIC_INIT(1), .write_protect_seq = SEQCNT_ZERO(init_mm.write_protect_seq), MMAP_LOCK_INITIALIZER(init_mm) .page_table_lock = __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock), .arg_lock = __SPIN_LOCK_UNLOCKED(init_mm.arg_lock), .mmlist = LIST_HEAD_INIT(init_mm.mmlist), #ifdef CONFIG_PER_VMA_LOCK .vma_writer_wait = __RCUWAIT_INITIALIZER(init_mm.vma_writer_wait), .mm_lock_seq = SEQCNT_ZERO(init_mm.mm_lock_seq), #endif .user_ns = &init_user_ns, .cpu_bitmap = CPU_BITS_NONE, INIT_MM_CONTEXT(init_mm) }; void setup_initial_init_mm(void *start_code, void *end_code, void *end_data, void *brk) { init_mm.start_code = (unsigned long)start_code; init_mm.end_code = (unsigned long)end_code; init_mm.end_data = (unsigned long)end_data; init_mm.brk = (unsigned long)brk; } ¤ Dauer der Verarbeitung: 0.8 Sekunden ¤*© Formatika GbR, Deutschland |
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2026-03-28