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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-04 11:58:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-04 11:58:55 -0700
commitea9448b254e253e4d95afaab071b341d86c11795 (patch)
treea0cfe5963169272487b9ae9fb989e29a42555bab /include
parent83eb69f3b80f7cf2ca6357fb9c23adc48632a0e3 (diff)
parent0e7e6198af28c1573267aba1be33dd0b7fb35691 (diff)
downloadlinux-ea9448b254e253e4d95afaab071b341d86c11795.tar.bz2
Merge tag 'drm-next-2020-04-03-1' of git://anongit.freedesktop.org/drm/drm
Pull drm hugepage support from Dave Airlie: "This adds support for hugepages to TTM and has been tested with the vmwgfx drivers, though I expect other drivers to start using it" * tag 'drm-next-2020-04-03-1' of git://anongit.freedesktop.org/drm/drm: drm/vmwgfx: Hook up the helpers to align buffer objects drm/vmwgfx: Introduce a huge page aligning TTM range manager drm: Add a drm_get_unmapped_area() helper drm/vmwgfx: Support huge page faults drm/ttm, drm/vmwgfx: Support huge TTM pagefaults mm: Add vmf_insert_pfn_xxx_prot() for huge page-table entries mm: Split huge pages on write-notify or COW mm: Introduce vma_is_special_huge fs: Constify vma argument to vma_is_dax
Diffstat (limited to 'include')
-rw-r--r--include/drm/drm_file.h9
-rw-r--r--include/drm/ttm/ttm_bo_api.h3
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/huge_mm.h41
-rw-r--r--include/linux/mm.h17
5 files changed, 68 insertions, 4 deletions
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 19df8028a6c4..5aaf1c4593a9 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -391,4 +391,13 @@ void drm_send_event(struct drm_device *dev, struct drm_pending_event *e);
struct file *mock_drm_getfile(struct drm_minor *minor, unsigned int flags);
+#ifdef CONFIG_MMU
+struct drm_vma_offset_manager;
+unsigned long drm_get_unmapped_area(struct file *file,
+ unsigned long uaddr, unsigned long len,
+ unsigned long pgoff, unsigned long flags,
+ struct drm_vma_offset_manager *mgr);
+#endif /* CONFIG_MMU */
+
+
#endif /* _DRM_FILE_H_ */
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index b9bc1b00142e..0a9d042e075a 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -727,7 +727,8 @@ vm_fault_t ttm_bo_vm_reserve(struct ttm_buffer_object *bo,
vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf,
pgprot_t prot,
- pgoff_t num_prefault);
+ pgoff_t num_prefault,
+ pgoff_t fault_page_size);
vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f81c822f4d89..4f6f59b4f22a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3399,7 +3399,7 @@ static inline bool io_is_direct(struct file *filp)
return (filp->f_flags & O_DIRECT) || IS_DAX(filp->f_mapping->host);
}
-static inline bool vma_is_dax(struct vm_area_struct *vma)
+static inline bool vma_is_dax(const struct vm_area_struct *vma)
{
return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);
}
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 680a0d9a9721..f2df2247026a 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -47,8 +47,45 @@ extern bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr,
extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, pgprot_t newprot,
int prot_numa);
-vm_fault_t vmf_insert_pfn_pmd(struct vm_fault *vmf, pfn_t pfn, bool write);
-vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, pfn_t pfn, bool write);
+vm_fault_t vmf_insert_pfn_pmd_prot(struct vm_fault *vmf, pfn_t pfn,
+ pgprot_t pgprot, bool write);
+
+/**
+ * vmf_insert_pfn_pmd - insert a pmd size pfn
+ * @vmf: Structure describing the fault
+ * @pfn: pfn to insert
+ * @pgprot: page protection to use
+ * @write: whether it's a write fault
+ *
+ * Insert a pmd size pfn. See vmf_insert_pfn() for additional info.
+ *
+ * Return: vm_fault_t value.
+ */
+static inline vm_fault_t vmf_insert_pfn_pmd(struct vm_fault *vmf, pfn_t pfn,
+ bool write)
+{
+ return vmf_insert_pfn_pmd_prot(vmf, pfn, vmf->vma->vm_page_prot, write);
+}
+vm_fault_t vmf_insert_pfn_pud_prot(struct vm_fault *vmf, pfn_t pfn,
+ pgprot_t pgprot, bool write);
+
+/**
+ * vmf_insert_pfn_pud - insert a pud size pfn
+ * @vmf: Structure describing the fault
+ * @pfn: pfn to insert
+ * @pgprot: page protection to use
+ * @write: whether it's a write fault
+ *
+ * Insert a pud size pfn. See vmf_insert_pfn() for additional info.
+ *
+ * Return: vm_fault_t value.
+ */
+static inline vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, pfn_t pfn,
+ bool write)
+{
+ return vmf_insert_pfn_pud_prot(vmf, pfn, vmf->vma->vm_page_prot, write);
+}
+
enum transparent_hugepage_flag {
TRANSPARENT_HUGEPAGE_FLAG,
TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG,
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 937bf719c329..7dd5c4ccbf85 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3014,6 +3014,23 @@ extern long copy_huge_page_from_user(struct page *dst_page,
const void __user *usr_src,
unsigned int pages_per_huge_page,
bool allow_pagefault);
+
+/**
+ * vma_is_special_huge - Are transhuge page-table entries considered special?
+ * @vma: Pointer to the struct vm_area_struct to consider
+ *
+ * Whether transhuge page-table entries are considered "special" following
+ * the definition in vm_normal_page().
+ *
+ * Return: true if transhuge page-table entries should be considered special,
+ * false otherwise.
+ */
+static inline bool vma_is_special_huge(const struct vm_area_struct *vma)
+{
+ return vma_is_dax(vma) || (vma->vm_file &&
+ (vma->vm_flags & (VM_PFNMAP | VM_MIXEDMAP)));
+}
+
#endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */
#ifdef CONFIG_DEBUG_PAGEALLOC