mm/pgtable: drop pgtable_t variable from pte_fn_t functions

Drop the pgtable_t variable from all implementation for pte_fn_t as none
of them use it.  apply_to_pte_range() should stop computing it as well.
Should help us save some cycles.

Link: http://lkml.kernel.org/r/1556803126-26596-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Matthew Wilcox <willy@infradead.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <jglisse@redhat.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/arm/kernel/efi.c b/arch/arm/kernel/efi.c
index ed00587..e57dbcc 100644 (file)
--- a/arch/arm/kernel/efi.c
+++ b/arch/arm/kernel/efi.c
@@ -8,8 +8,7 @@
 #include <asm/mach/map.h>
 #include <asm/mmu_context.h>
 
-static int __init set_permissions(pte_t *ptep, pgtable_t token,
-                                 unsigned long addr, void *data)
+static int __init set_permissions(pte_t *ptep, unsigned long addr, void *data)
 {
        efi_memory_desc_t *md = data;
        pte_t pte = *ptep;

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 439bb6a..1fb5c0c 100644 (file)
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -493,8 +493,7 @@ void __init dma_contiguous_remap(void)
        }
 }
 
-static int __dma_update_pte(pte_t *pte, pgtable_t token, unsigned long addr,
-                           void *data)
+static int __dma_update_pte(pte_t *pte, unsigned long addr, void *data)
 {
        struct page *page = virt_to_page(addr);
        pgprot_t prot = *(pgprot_t *)data;

diff --git a/arch/arm/mm/pageattr.c b/arch/arm/mm/pageattr.c
index 0f5faf3..d546efa 100644 (file)
--- a/arch/arm/mm/pageattr.c
+++ b/arch/arm/mm/pageattr.c
@@ -14,8 +14,7 @@ struct page_change_data {
        pgprot_t clear_mask;
 };
 
-static int change_page_range(pte_t *ptep, pgtable_t token, unsigned long addr,
-                       void *data)
+static int change_page_range(pte_t *ptep, unsigned long addr, void *data)
 {
        struct page_change_data *cdata = data;
        pte_t pte = *ptep;

diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 3c33d0d..d0cf596 100644 (file)
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -82,8 +82,7 @@ int __init efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md)
        return 0;
 }
 
-static int __init set_permissions(pte_t *ptep, pgtable_t token,
-                                 unsigned long addr, void *data)
+static int __init set_permissions(pte_t *ptep, unsigned long addr, void *data)
 {
        efi_memory_desc_t *md = data;
        pte_t pte = READ_ONCE(*ptep);

diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
index fcdcf6c..03c53f1 100644 (file)
--- a/arch/arm64/mm/pageattr.c
+++ b/arch/arm64/mm/pageattr.c
@@ -19,8 +19,7 @@ struct page_change_data {
 
 bool rodata_full __ro_after_init = IS_ENABLED(CONFIG_RODATA_FULL_DEFAULT_ENABLED);
 
-static int change_page_range(pte_t *ptep, pgtable_t token, unsigned long addr,
-                       void *data)
+static int change_page_range(pte_t *ptep, unsigned long addr, void *data)
 {
        struct page_change_data *cdata = data;
        pte_t pte = READ_ONCE(*ptep);

diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index beb44e2..f6e5eee 100644 (file)
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -2700,8 +2700,7 @@ struct remap_data {
        struct mmu_update *mmu_update;
 };
 
-static int remap_area_pfn_pte_fn(pte_t *ptep, pgtable_t token,
-                                unsigned long addr, void *data)
+static int remap_area_pfn_pte_fn(pte_t *ptep, unsigned long addr, void *data)
 {
        struct remap_data *rmd = data;
        pte_t pte = pte_mkspecial(mfn_pte(*rmd->pfn, rmd->prot));

diff --git a/drivers/gpu/drm/i915/i915_mm.c b/drivers/gpu/drm/i915/i915_mm.c
index e4935dd..c23bb29 100644 (file)
--- a/drivers/gpu/drm/i915/i915_mm.c
+++ b/drivers/gpu/drm/i915/i915_mm.c
@@ -35,8 +35,7 @@ struct remap_pfn {
        pgprot_t prot;
 };
 
-static int remap_pfn(pte_t *pte, pgtable_t token,
-                    unsigned long addr, void *data)
+static int remap_pfn(pte_t *pte, unsigned long addr, void *data)
 {
        struct remap_pfn *r = data;
 

diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 469dfbd..4c339c7 100644 (file)
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -264,8 +264,7 @@ void gntdev_put_map(struct gntdev_priv *priv, struct gntdev_grant_map *map)
 
 /* ------------------------------------------------------------------ */
 
-static int find_grant_ptes(pte_t *pte, pgtable_t token,
-               unsigned long addr, void *data)
+static int find_grant_ptes(pte_t *pte, unsigned long addr, void *data)
 {
        struct gntdev_grant_map *map = data;
        unsigned int pgnr = (addr - map->vma->vm_start) >> PAGE_SHIFT;
@@ -292,8 +291,7 @@ static int find_grant_ptes(pte_t *pte, pgtable_t token,
 }
 
 #ifdef CONFIG_X86
-static int set_grant_ptes_as_special(pte_t *pte, pgtable_t token,
-                                    unsigned long addr, void *data)
+static int set_grant_ptes_as_special(pte_t *pte, unsigned long addr, void *data)
 {
        set_pte_at(current->mm, addr, pte, pte_mkspecial(*pte));
        return 0;

diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 1ff38d8..2f5ce72 100644 (file)
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -731,8 +731,7 @@ struct remap_pfn {
        unsigned long i;
 };
 
-static int remap_pfn_fn(pte_t *ptep, pgtable_t token, unsigned long addr,
-                       void *data)
+static int remap_pfn_fn(pte_t *ptep, unsigned long addr, void *data)
 {
        struct remap_pfn *r = data;
        struct page *page = r->pages[r->i];
@@ -966,8 +965,7 @@ static int privcmd_mmap(struct file *file, struct vm_area_struct *vma)
  * on a per pfn/pte basis. Mapping calls that fail with ENOENT
  * can be then retried until success.
  */
-static int is_mapped_fn(pte_t *pte, struct page *pmd_page,
-                       unsigned long addr, void *data)
+static int is_mapped_fn(pte_t *pte, unsigned long addr, void *data)
 {
        return pte_none(*pte) ? 0 : -EBUSY;
 }

diff --git a/drivers/xen/xlate_mmu.c b/drivers/xen/xlate_mmu.c
index e7df65d..ba883a8 100644 (file)
--- a/drivers/xen/xlate_mmu.c
+++ b/drivers/xen/xlate_mmu.c
@@ -93,8 +93,7 @@ static void setup_hparams(unsigned long gfn, void *data)
        info->fgfn++;
 }
 
-static int remap_pte_fn(pte_t *ptep, pgtable_t token, unsigned long addr,
-                       void *data)
+static int remap_pte_fn(pte_t *ptep, unsigned long addr, void *data)
 {
        struct remap_data *info = data;
        struct page *page = info->pages[info->index++];

diff --git a/include/linux/mm.h b/include/linux/mm.h
index cb8d413..bb242ad 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2686,8 +2686,7 @@ static inline int vm_fault_to_errno(vm_fault_t vm_fault, int foll_flags)
        return 0;
 }
 
-typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
-                       void *data);
+typedef int (*pte_fn_t)(pte_t *pte, unsigned long addr, void *data);
 extern int apply_to_page_range(struct mm_struct *mm, unsigned long address,
                               unsigned long size, pte_fn_t fn, void *data);
 

diff --git a/mm/memory.c b/mm/memory.c
index b47e4e5..0428ff5 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2036,7 +2036,6 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
 {
        pte_t *pte;
        int err;
-       pgtable_t token;
        spinlock_t *uninitialized_var(ptl);
 
        pte = (mm == &init_mm) ?
@@ -2049,10 +2048,8 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
 
        arch_enter_lazy_mmu_mode();
 
-       token = pmd_pgtable(*pmd);
-
        do {
-               err = fn(pte++, token, addr, data);
+               err = fn(pte++, addr, data);
                if (err)
                        break;
        } while (addr += PAGE_SIZE, addr != end);

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 030a544..a5413a6 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2996,7 +2996,7 @@ void __weak vmalloc_sync_all(void)
 }
 
 
-static int f(pte_t *pte, pgtable_t table, unsigned long addr, void *data)
+static int f(pte_t *pte, unsigned long addr, void *data)
 {
        pte_t ***p = data;