1 files changed, 87 insertions, 0 deletions
diff --git a/include/linux/mm_types_task.h b/include/linux/mm_types_task.h
new file mode 100644
index 000000000000..136dfdf63ba1
--- /dev/null
+++ b/include/linux/mm_types_task.h
@@ -0,0 +1,87 @@
+#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>
+
+#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
+	/*
+	 * Each bit set is a CPU that potentially has a TLB entry for one of
+	 * the PFNs being flushed. See set_tlb_ubc_flush_pending().
+	 */
+	struct cpumask cpumask;
+
+	/* True if any bit in cpumask is set */
+	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 */