[PATCH 09/33] autonuma: core autonuma.h header

[Andrea Arcangeli <aarcange@redhat.com>]

Header that defines the generic AutoNUMA specific functions.

All functions are defined unconditionally, but are only linked into
the kernel if CONFIG_AUTONUMA=y. When CONFIG_AUTONUMA=n, their call
sites are optimized away at build time (or the kernel wouldn't link).

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
---
 include/linux/autonuma.h |   34 ++++++++++++++++++++++++++++++++++
 1 files changed, 34 insertions(+), 0 deletions(-)
 create mode 100644 include/linux/autonuma.h

diff --git a/include/linux/autonuma.h b/include/linux/autonuma.h
new file mode 100644
index 0000000..02d4875
--- /dev/null
+++ b/include/linux/autonuma.h
@@ -0,0 +1,34 @@
+#ifndef _LINUX_AUTONUMA_H
+#define _LINUX_AUTONUMA_H
+
+#include <linux/autonuma_flags.h>
+
+#ifdef CONFIG_AUTONUMA
+
+extern void autonuma_enter(struct mm_struct *mm);
+extern void autonuma_exit(struct mm_struct *mm);
+extern void autonuma_migrate_split_huge_page(struct page *page,
+					     struct page *page_tail);
+extern void autonuma_setup_new_exec(struct task_struct *p);
+
+#define autonuma_printk(format, args...) \
+	if (autonuma_debug()) printk(format, ##args)
+
+#else /* CONFIG_AUTONUMA */
+
+static inline void autonuma_enter(struct mm_struct *mm) {}
+static inline void autonuma_exit(struct mm_struct *mm) {}
+static inline void autonuma_migrate_split_huge_page(struct page *page,
+						    struct page *page_tail) {}
+static inline void autonuma_setup_new_exec(struct task_struct *p) {}
+
+#endif /* CONFIG_AUTONUMA */
+
+extern int pte_numa_fixup(struct mm_struct *mm, struct vm_area_struct *vma,
+			  unsigned long addr, pte_t pte, pte_t *ptep,
+			  pmd_t *pmd);
+extern int pmd_numa_fixup(struct mm_struct *mm, unsigned long addr,
+			  pmd_t *pmd);
+extern bool numa_hinting_fault(struct page *page, int numpages);
+
+#endif /* _LINUX_AUTONUMA_H */

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