Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Aneesh Kumar K.V |
91 |
25.14% |
2 |
11.11% |
| Paul Mackerras |
88 |
24.31% |
2 |
11.11% |
| Nicholas Piggin |
68 |
18.78% |
1 |
5.56% |
| Benjamin Herrenschmidt |
54 |
14.92% |
2 |
11.11% |
| Stephen Rothwell |
31 |
8.56% |
1 |
5.56% |
| Peter Zijlstra |
10 |
2.76% |
2 |
11.11% |
| Arnd Bergmann |
6 |
1.66% |
1 |
5.56% |
| Will Deacon |
4 |
1.10% |
1 |
5.56% |
| Andrew Morton |
3 |
0.83% |
2 |
11.11% |
| Mathieu Desnoyers |
3 |
0.83% |
1 |
5.56% |
| Thomas Gleixner |
2 |
0.55% |
1 |
5.56% |
| Christophe Leroy |
1 |
0.28% |
1 |
5.56% |
| Mike Rapoport |
1 |
0.28% |
1 |
5.56% |
| Total |
362 |
|
18 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* TLB shootdown specifics for powerpc
*
* Copyright (C) 2002 Anton Blanchard, IBM Corp.
* Copyright (C) 2002 Paul Mackerras, IBM Corp.
*/
#ifndef _ASM_POWERPC_TLB_H
#define _ASM_POWERPC_TLB_H
#ifdef __KERNEL__
#ifndef __powerpc64__
#include <linux/pgtable.h>
#endif
#include <asm/pgalloc.h>
#ifndef __powerpc64__
#include <asm/page.h>
#include <asm/mmu.h>
#endif
#include <linux/pagemap.h>
#define tlb_start_vma(tlb, vma) do { } while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
#define __tlb_remove_tlb_entry __tlb_remove_tlb_entry
#define tlb_flush tlb_flush
extern void tlb_flush(struct mmu_gather *tlb);
/*
* book3s:
* Hash does not use the linux page-tables, so we can avoid
* the TLB invalidate for page-table freeing, Radix otoh does use the
* page-tables and needs the TLBI.
*
* nohash:
* We still do TLB invalidate in the __pte_free_tlb routine before we
* add the page table pages to mmu gather table batch.
*/
#define tlb_needs_table_invalidate() radix_enabled()
/* Get the generic bits... */
#include <asm-generic/tlb.h>
extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
unsigned long address);
static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
unsigned long address)
{
#ifdef CONFIG_PPC_BOOK3S_32
if (pte_val(*ptep) & _PAGE_HASHPTE)
flush_hash_entry(tlb->mm, ptep, address);
#endif
}
#ifdef CONFIG_SMP
static inline int mm_is_core_local(struct mm_struct *mm)
{
return cpumask_subset(mm_cpumask(mm),
topology_sibling_cpumask(smp_processor_id()));
}
#ifdef CONFIG_PPC_BOOK3S_64
static inline int mm_is_thread_local(struct mm_struct *mm)
{
if (atomic_read(&mm->context.active_cpus) > 1)
return false;
return cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm));
}
static inline void mm_reset_thread_local(struct mm_struct *mm)
{
WARN_ON(atomic_read(&mm->context.copros) > 0);
/*
* It's possible for mm_access to take a reference on mm_users to
* access the remote mm from another thread, but it's not allowed
* to set mm_cpumask, so mm_users may be > 1 here.
*/
WARN_ON(current->mm != mm);
atomic_set(&mm->context.active_cpus, 1);
cpumask_clear(mm_cpumask(mm));
cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
}
#else /* CONFIG_PPC_BOOK3S_64 */
static inline int mm_is_thread_local(struct mm_struct *mm)
{
return cpumask_equal(mm_cpumask(mm),
cpumask_of(smp_processor_id()));
}
#endif /* !CONFIG_PPC_BOOK3S_64 */
#else /* CONFIG_SMP */
static inline int mm_is_core_local(struct mm_struct *mm)
{
return 1;
}
static inline int mm_is_thread_local(struct mm_struct *mm)
{
return 1;
}
#endif
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_TLB_H */