/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_MM_TYPES_TASK_H #define _LINUX_MM_TYPES_TASK_H /* * Here are the definitions of the MM data types that are embedded in 'struct task_struct'. * * (These are defined separately to decouple sched.h from mm_types.h as much as possible.) */ #include <linux/types.h> #include <linux/threads.h> #include <linux/atomic.h> #include <linux/cpumask.h> #include <asm/page.h> #ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH #include <asm/tlbbatch.h> #endif #define USE_SPLIT_PTE_PTLOCKS (NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS) #define USE_SPLIT_PMD_PTLOCKS (USE_SPLIT_PTE_PTLOCKS && \ IS_ENABLED(CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK)) #define ALLOC_SPLIT_PTLOCKS (SPINLOCK_SIZE > BITS_PER_LONG/8) /* * The per task VMA cache array: */ #define VMACACHE_BITS 2 #define VMACACHE_SIZE (1U << VMACACHE_BITS) #define VMACACHE_MASK (VMACACHE_SIZE - 1) struct vmacache { u32 seqnum; struct vm_area_struct *vmas[VMACACHE_SIZE]; }; enum { MM_FILEPAGES, /* Resident file mapping pages */ MM_ANONPAGES, /* Resident anonymous pages */ MM_SWAPENTS, /* Anonymous swap entries */ MM_SHMEMPAGES, /* Resident shared memory pages */ NR_MM_COUNTERS }; #if USE_SPLIT_PTE_PTLOCKS && defined(CONFIG_MMU) #define SPLIT_RSS_COUNTING /* per-thread cached information, */ struct task_rss_stat { int events; /* for synchronization threshold */ int count[NR_MM_COUNTERS]; }; #endif /* USE_SPLIT_PTE_PTLOCKS */ struct mm_rss_stat { atomic_long_t count[NR_MM_COUNTERS]; }; struct page_frag { struct page *page; #if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536) __u32 offset; __u32 size; #else __u16 offset; __u16 size; #endif }; /* Track pages that require TLB flushes */ struct tlbflush_unmap_batch { #ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH /* * The arch code makes the following promise: generic code can modify a * PTE, then call arch_tlbbatch_add_mm() (which internally provides all * needed barriers), then call arch_tlbbatch_flush(), and the entries * will be flushed on all CPUs by the time that arch_tlbbatch_flush() * returns. */ struct arch_tlbflush_unmap_batch arch; /* True if a flush is needed. */ bool flush_required; /* * If true then the PTE was dirty when unmapped. The entry must be * flushed before IO is initiated or a stale TLB entry potentially * allows an update without redirtying the page. */ bool writable; #endif }; #endif /* _LINUX_MM_TYPES_TASK_H */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ingo Molnar | 183 | 93.37% | 3 | 60.00% |
| Andrew Lutomirski | 12 | 6.12% | 1 | 20.00% |
| Greg Kroah-Hartman | 1 | 0.51% | 1 | 20.00% |
| Total | 196 | 100.00% | 5 | 100.00% |