Release 4.14 arch/arm64/mm/flush.c
/*
* Based on arch/arm/mm/flush.c
*
* Copyright (C) 1995-2002 Russell King
* Copyright (C) 2012 ARM Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/export.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <asm/cacheflush.h>
#include <asm/cache.h>
#include <asm/tlbflush.h>
void sync_icache_aliases(void *kaddr, unsigned long len)
{
unsigned long addr = (unsigned long)kaddr;
if (icache_is_aliasing()) {
__clean_dcache_area_pou(kaddr, len);
__flush_icache_all();
} else {
flush_icache_range(addr, addr + len);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Catalin Marinas | 50 | 96.15% | 1 | 50.00% |
| Ashok Kumar | 2 | 3.85% | 1 | 50.00% |
| Total | 52 | 100.00% | 2 | 100.00% |
static void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
unsigned long uaddr, void *kaddr,
unsigned long len)
{
if (vma->vm_flags & VM_EXEC)
sync_icache_aliases(kaddr, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ashok Kumar | 42 | 97.67% | 1 | 50.00% |
| Catalin Marinas | 1 | 2.33% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
/*
* Copy user data from/to a page which is mapped into a different processes
* address space. Really, we want to allow our "user space" model to handle
* this.
*/
void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long uaddr, void *dst, const void *src,
unsigned long len)
{
memcpy(dst, src, len);
flush_ptrace_access(vma, page, uaddr, dst, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Catalin Marinas | 54 | 100.00% | 1 | 100.00% |
| Total | 54 | 100.00% | 1 | 100.00% |
void __sync_icache_dcache(pte_t pte, unsigned long addr)
{
struct page *page = pte_page(pte);
if (!test_and_set_bit(PG_dcache_clean, &page->flags))
sync_icache_aliases(page_address(page),
PAGE_SIZE << compound_order(page));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Catalin Marinas | 44 | 88.00% | 3 | 60.00% |
| Steve Capper | 5 | 10.00% | 1 | 20.00% |
| Ashok Kumar | 1 | 2.00% | 1 | 20.00% |
| Total | 50 | 100.00% | 5 | 100.00% |
/*
* This function is called when a page has been modified by the kernel. Mark
* it as dirty for later flushing when mapped in user space (if executable,
* see __sync_icache_dcache).
*/
void flush_dcache_page(struct page *page)
{
if (test_bit(PG_dcache_clean, &page->flags))
clear_bit(PG_dcache_clean, &page->flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Catalin Marinas | 32 | 100.00% | 2 | 100.00% |
| Total | 32 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(flush_dcache_page);
/*
* Additional functions defined in assembly.
*/
EXPORT_SYMBOL(flush_icache_range);
#ifdef CONFIG_ARCH_HAS_PMEM_API
void arch_wb_cache_pmem(void *addr, size_t size)
{
/* Ensure order against any prior non-cacheable writes */
dmb(osh);
__clean_dcache_area_pop(addr, size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robin Murphy | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(arch_wb_cache_pmem);
void arch_invalidate_pmem(void *addr, size_t size)
{
__inval_dcache_area(addr, size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robin Murphy | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Catalin Marinas | 211 | 65.53% | 4 | 44.44% |
| Robin Murphy | 59 | 18.32% | 1 | 11.11% |
| Ashok Kumar | 45 | 13.98% | 1 | 11.11% |
| Steve Capper | 5 | 1.55% | 1 | 11.11% |
| Mark Rutland | 1 | 0.31% | 1 | 11.11% |
| Will Deacon | 1 | 0.31% | 1 | 11.11% |
| Total | 322 | 100.00% | 9 | 100.00% |
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