cregit-Linux how code gets into the kernel

Release 4.14 arch/m68k/include/asm/sun3_pgalloc.h

/* SPDX-License-Identifier: GPL-2.0 */
/* sun3_pgalloc.h --
 * reorganization around 2.3.39, routines moved from sun3_pgtable.h
 *
 *
 * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
 *
 * moved 1/26/2000 Sam Creasey
 */

#ifndef _SUN3_PGALLOC_H

#define _SUN3_PGALLOC_H

#include <asm/tlb.h>

extern const char bad_pmd_string[];


#define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); })



static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) { free_page((unsigned long) pte); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1872.00%133.33%
Benjamin Herrenschmidt520.00%133.33%
Roman Zippel28.00%133.33%
Total25100.00%3100.00%


static inline void pte_free(struct mm_struct *mm, pgtable_t page) { pgtable_page_dtor(page); __free_page(page); }

Contributors

PersonTokensPropCommitsCommitProp
Roman Zippel1560.00%133.33%
Martin Schwidefsky624.00%133.33%
Benjamin Herrenschmidt416.00%133.33%
Total25100.00%3100.00%

#define __pte_free_tlb(tlb,pte,addr) \ do { \ pgtable_page_dtor(pte); \ tlb_remove_page((tlb), pte); \ } while (0)
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { unsigned long page = __get_free_page(GFP_KERNEL); if (!page) return NULL; memset((void *)page, 0, PAGE_SIZE); return (pte_t *) (page); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4885.71%133.33%
Linus Torvalds712.50%133.33%
Roman Zippel11.79%133.33%
Total56100.00%3100.00%


static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) { struct page *page = alloc_pages(GFP_KERNEL, 0); if (page == NULL) return NULL; clear_highpage(page); if (!pgtable_page_ctor(page)) { __free_page(page); return NULL; } return page; }

Contributors

PersonTokensPropCommitsCommitProp
Roman Zippel4063.49%125.00%
Kirill A. Shutemov1320.63%125.00%
Martin Schwidefsky69.52%125.00%
Linus Torvalds46.35%125.00%
Total63100.00%4100.00%


static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { pmd_val(*pmd) = __pa((unsigned long)pte); }

Contributors

PersonTokensPropCommitsCommitProp
Roman Zippel2880.00%150.00%
Linus Torvalds720.00%150.00%
Total35100.00%2100.00%


static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) { pmd_val(*pmd) = __pa((unsigned long)page_address(page)); }

Contributors

PersonTokensPropCommitsCommitProp
Roman Zippel2054.05%133.33%
Linus Torvalds (pre-git)1643.24%133.33%
Martin Schwidefsky12.70%133.33%
Total37100.00%3100.00%

#define pmd_pgtable(pmd) pmd_page(pmd) /* * allocating and freeing a pmd is trivial: the 1-entry pmd is * inside the pgd, so has no extra memory associated with it. */ #define pmd_free(mm, x) do { } while (0) #define __pmd_free_tlb(tlb, x, addr) do { } while (0)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) { free_page((unsigned long) pgd); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1976.00%133.33%
Benjamin Herrenschmidt520.00%133.33%
Roman Zippel14.00%133.33%
Total25100.00%3100.00%


static inline pgd_t * pgd_alloc(struct mm_struct *mm) { pgd_t *new_pgd; new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL); memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT)); return new_pgd; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4788.68%125.00%
Linus Torvalds47.55%125.00%
Roman Zippel11.89%125.00%
Andrew Morton11.89%125.00%
Total53100.00%4100.00%

#define pgd_populate(mm, pmd, pte) BUG() #endif /* SUN3_PGALLOC_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)15739.35%17.14%
Roman Zippel13734.34%17.14%
Linus Torvalds4110.28%214.29%
Martin Schwidefsky225.51%17.14%
Benjamin Herrenschmidt205.01%214.29%
Kirill A. Shutemov133.26%17.14%
Andrew Morton41.00%321.43%
Geert Uytterhoeven41.00%214.29%
Greg Kroah-Hartman10.25%17.14%
Total399100.00%14100.00%
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