diff mbox series

[24/33] m68k: Convert various functions to use ptdescs

Message ID 20230417205048.15870-25-vishal.moola@gmail.com (mailing list archive)
State New
Headers show
Series Split ptdesc from struct page | expand

Commit Message

Vishal Moola April 17, 2023, 8:50 p.m. UTC 
As part of the conversions to replace pgtable constructor/destructors with
ptdesc equivalents, convert various page table functions to use ptdescs.

Some of the functions use the *get*page*() helper functions. Convert
these to use ptdesc_alloc() and ptdesc_address() instead to help
standardize page tables further.

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
---
 arch/m68k/include/asm/mcf_pgalloc.h  | 41 ++++++++++++++--------------
 arch/m68k/include/asm/sun3_pgalloc.h |  8 +++---
 arch/m68k/mm/motorola.c              |  4 +--
 3 files changed, 27 insertions(+), 26 deletions(-)

Comments

kernel test robot April 17, 2023, 10:18 p.m. UTC | #1 
Hi Vishal,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on next-20230417]
[cannot apply to s390/features powerpc/next powerpc/fixes geert-m68k/for-next geert-m68k/for-linus linus/master v6.3-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Vishal-Moola-Oracle/s390-Use-_pt_s390_gaddr-for-gmap-address-tracking/20230418-045832
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20230417205048.15870-25-vishal.moola%40gmail.com
patch subject: [PATCH 24/33] m68k: Convert various functions to use ptdescs
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230418/202304180652.LeoLmaNQ-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/630b38053b213e6138d3deb3e4325b24ad6dcb1f
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Vishal-Moola-Oracle/s390-Use-_pt_s390_gaddr-for-gmap-address-tracking/20230418-045832
        git checkout 630b38053b213e6138d3deb3e4325b24ad6dcb1f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash arch/m68k/mm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304180652.LeoLmaNQ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/m68k/mm/motorola.c: In function 'free_pointer_table':
>> arch/m68k/mm/motorola.c:204:56: warning: passing argument 1 of 'virt_to_ptdesc' makes pointer from integer without a cast [-Wint-conversion]
     204 |                         ptdesc_pte_dtor(virt_to_ptdesc(page));
         |                                                        ^~~~
         |                                                        |
         |                                                        long unsigned int
   In file included from arch/m68k/mm/motorola.c:15:
   include/linux/mm.h:2721:57: note: expected 'const void *' but argument is of type 'long unsigned int'
    2721 | static inline struct ptdesc *virt_to_ptdesc(const void *x)
         |                                             ~~~~~~~~~~~~^
   arch/m68k/mm/motorola.c: At top level:
   arch/m68k/mm/motorola.c:418:13: warning: no previous prototype for 'paging_init' [-Wmissing-prototypes]
     418 | void __init paging_init(void)
         |             ^~~~~~~~~~~


vim +/virt_to_ptdesc +204 arch/m68k/mm/motorola.c

   185	
   186	int free_pointer_table(void *table, int type)
   187	{
   188		ptable_desc *dp;
   189		unsigned long ptable = (unsigned long)table;
   190		unsigned long page = ptable & PAGE_MASK;
   191		unsigned int mask = 1U << ((ptable - page)/ptable_size(type));
   192	
   193		dp = PD_PTABLE(page);
   194		if (PD_MARKBITS (dp) & mask)
   195			panic ("table already free!");
   196	
   197		PD_MARKBITS (dp) |= mask;
   198	
   199		if (PD_MARKBITS(dp) == ptable_mask(type)) {
   200			/* all tables in page are free, free page */
   201			list_del(dp);
   202			mmu_page_dtor((void *)page);
   203			if (type == TABLE_PTE)
 > 204				ptdesc_pte_dtor(virt_to_ptdesc(page));
   205			free_page (page);
   206			return 1;
   207		} else if (ptable_list[type].next != dp) {
   208			/*
   209			 * move this descriptor to the front of the list, since
   210			 * it has one or more free tables.
   211			 */
   212			list_move(dp, &ptable_list[type]);
   213		}
   214		return 0;
   215	}
   216
diff mbox series

Patch

diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h
index 5c2c0a864524..b0e909e23e14 100644
--- a/arch/m68k/include/asm/mcf_pgalloc.h
+++ b/arch/m68k/include/asm/mcf_pgalloc.h
@@ -7,20 +7,19 @@ 
 
 extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
 {
-	free_page((unsigned long) pte);
+	ptdesc_free(virt_to_ptdesc(pte));
 }
 
 extern const char bad_pmd_string[];
 
 extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
 {
-	unsigned long page = __get_free_page(GFP_DMA);
+	struct ptdesc *ptdesc = ptdesc_alloc(GFP_DMA | __GFP_ZERO, 0);
 
-	if (!page)
+	if (!ptdesc)
 		return NULL;
 
-	memset((void *)page, 0, PAGE_SIZE);
-	return (pte_t *) (page);
+	return (pte_t *) (ptdesc_address(ptdesc));
 }
 
 extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
@@ -35,36 +34,36 @@  extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
 static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
 				  unsigned long address)
 {
-	struct page *page = virt_to_page(pgtable);
+	struct ptdesc *ptdesc = virt_to_ptdesc(pgtable);
 
-	pgtable_pte_page_dtor(page);
-	__free_page(page);
+	ptdesc_pte_dtor(ptdesc);
+	ptdesc_free(ptdesc);
 }
 
 static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
 {
-	struct page *page = alloc_pages(GFP_DMA, 0);
+	struct ptdesc *ptdesc = ptdesc_alloc(GFP_DMA, 0);
 	pte_t *pte;
 
-	if (!page)
+	if (!ptdesc)
 		return NULL;
-	if (!pgtable_pte_page_ctor(page)) {
-		__free_page(page);
+	if (!ptdesc_pte_ctor(ptdesc)) {
+		ptdesc_free(ptdesc);
 		return NULL;
 	}
 
-	pte = page_address(page);
-	clear_page(pte);
+	pte = ptdesc_address(ptdesc);
+	ptdesc_clear(pte);
 
 	return pte;
 }
 
 static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
 {
-	struct page *page = virt_to_page(pgtable);
+	struct ptdesc *ptdesc = virt_to_ptdesc(ptdesc);
 
-	pgtable_pte_page_dtor(page);
-	__free_page(page);
+	ptdesc_pte_dtor(ptdesc);
+	ptdesc_free(ptdesc);
 }
 
 /*
@@ -75,16 +74,18 @@  static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
 
 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 {
-	free_page((unsigned long) pgd);
+	ptdesc_free(virt_to_ptdesc(pgd));
 }
 
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
 	pgd_t *new_pgd;
+	struct ptdesc *ptdesc = ptdesc_alloc(GFP_DMA | GFP_NOWARN, 0);
 
-	new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN);
-	if (!new_pgd)
+	if (!ptdesc)
 		return NULL;
+	new_pgd = (pgd_t *) ptdesc_address(ptdesc);
+
 	memcpy(new_pgd, swapper_pg_dir, PTRS_PER_PGD * sizeof(pgd_t));
 	memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
 	return new_pgd;
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h
index 198036aff519..013d375fc239 100644
--- a/arch/m68k/include/asm/sun3_pgalloc.h
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -17,10 +17,10 @@ 
 
 extern const char bad_pmd_string[];
 
-#define __pte_free_tlb(tlb,pte,addr)			\
-do {							\
-	pgtable_pte_page_dtor(pte);			\
-	tlb_remove_page((tlb), pte);			\
+#define __pte_free_tlb(tlb, pte, addr)				\
+do {								\
+	ptdesc_pte_dtor(page_ptdesc(pte));			\
+	tlb_remove_page_ptdesc((tlb), page_ptdesc(pte));	\
 } while (0)
 
 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index 911301224078..1e47b977bcf1 100644
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -161,7 +161,7 @@  void *get_pointer_table(int type)
 			 * m68k doesn't have SPLIT_PTE_PTLOCKS for not having
 			 * SMP.
 			 */
-			pgtable_pte_page_ctor(virt_to_page(page));
+			ptdesc_pte_ctor(virt_to_ptdesc(page));
 		}
 
 		mmu_page_ctor(page);
@@ -201,7 +201,7 @@  int free_pointer_table(void *table, int type)
 		list_del(dp);
 		mmu_page_dtor((void *)page);
 		if (type == TABLE_PTE)
-			pgtable_pte_page_dtor(virt_to_page(page));
+			ptdesc_pte_dtor(virt_to_ptdesc(page));
 		free_page (page);
 		return 1;
 	} else if (ptable_list[type].next != dp) {