Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Christoph Hellwig |
100 |
27.86% |
2 |
11.76% |
| Atish Patra |
63 |
17.55% |
5 |
29.41% |
| Guo Ren |
60 |
16.71% |
1 |
5.88% |
| Sergey Matyukevich |
34 |
9.47% |
1 |
5.88% |
| Palmer Dabbelt |
32 |
8.91% |
3 |
17.65% |
| Nanyong Sun |
26 |
7.24% |
2 |
11.76% |
| Andrew Waterman |
22 |
6.13% |
1 |
5.88% |
| Anup Patel |
16 |
4.46% |
1 |
5.88% |
| Paul Walmsley |
6 |
1.67% |
1 |
5.88% |
| Total |
359 |
|
17 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/sched.h>
#include <asm/sbi.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
void flush_tlb_all(void)
{
sbi_remote_sfence_vma(NULL, 0, -1);
}
static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start,
unsigned long size, unsigned long stride)
{
struct cpumask *pmask = &mm->context.tlb_stale_mask;
struct cpumask *cmask = mm_cpumask(mm);
unsigned int cpuid;
bool broadcast;
if (cpumask_empty(cmask))
return;
cpuid = get_cpu();
/* check if the tlbflush needs to be sent to other CPUs */
broadcast = cpumask_any_but(cmask, cpuid) < nr_cpu_ids;
if (static_branch_unlikely(&use_asid_allocator)) {
unsigned long asid = atomic_long_read(&mm->context.id);
/*
* TLB will be immediately flushed on harts concurrently
* executing this MM context. TLB flush on other harts
* is deferred until this MM context migrates there.
*/
cpumask_setall(pmask);
cpumask_clear_cpu(cpuid, pmask);
cpumask_andnot(pmask, pmask, cmask);
if (broadcast) {
sbi_remote_sfence_vma_asid(cmask, start, size, asid);
} else if (size <= stride) {
local_flush_tlb_page_asid(start, asid);
} else {
local_flush_tlb_all_asid(asid);
}
} else {
if (broadcast) {
sbi_remote_sfence_vma(cmask, start, size);
} else if (size <= stride) {
local_flush_tlb_page(start);
} else {
local_flush_tlb_all();
}
}
put_cpu();
}
void flush_tlb_mm(struct mm_struct *mm)
{
__sbi_tlb_flush_range(mm, 0, -1, PAGE_SIZE);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
{
__sbi_tlb_flush_range(vma->vm_mm, addr, PAGE_SIZE, PAGE_SIZE);
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(vma->vm_mm, start, end - start, PAGE_SIZE);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
__sbi_tlb_flush_range(vma->vm_mm, start, end - start, PMD_SIZE);
}
#endif