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dacd24ec49
A per-CPU batch struct is activated when entering lazy MMU mode; its lifetime is the same as the lazy MMU section (it is deactivated when leaving the mode). Preemption is disabled in that interval to ensure that the per-CPU reference remains valid. The generic lazy_mmu layer now tracks whether a task is in lazy MMU mode. We can therefore use the generic helper is_lazy_mmu_mode_active() to tell whether a batch struct is active instead of tracking it explicitly. Link: https://lkml.kernel.org/r/20251215150323.2218608-13-kevin.brodsky@arm.com Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com> Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com> Acked-by: Andreas Larsson <andreas@gaisler.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Borislav Betkov <bp@alien8.de> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: David Hildenbrand <david@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Juegren Gross <jgross@suse.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Gleinxer <tglx@linutronix.de> Cc: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SPARC64_TLBFLUSH_H
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#define _SPARC64_TLBFLUSH_H
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#include <asm/mmu_context.h>
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/* TSB flush operations. */
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#define TLB_BATCH_NR 192
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struct tlb_batch {
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unsigned int hugepage_shift;
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struct mm_struct *mm;
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unsigned long tlb_nr;
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unsigned long vaddrs[TLB_BATCH_NR];
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};
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void flush_tsb_kernel_range(unsigned long start, unsigned long end);
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void flush_tsb_user(struct tlb_batch *tb);
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void flush_tsb_user_page(struct mm_struct *mm, unsigned long vaddr,
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unsigned int hugepage_shift);
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/* TLB flush operations. */
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static inline void flush_tlb_mm(struct mm_struct *mm)
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{
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}
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static inline void flush_tlb_page(struct vm_area_struct *vma,
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unsigned long vmaddr)
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{
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}
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static inline void flush_tlb_range(struct vm_area_struct *vma,
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unsigned long start, unsigned long end)
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{
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}
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void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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void flush_tlb_pending(void);
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void arch_enter_lazy_mmu_mode(void);
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void arch_flush_lazy_mmu_mode(void);
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void arch_leave_lazy_mmu_mode(void);
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/* Local cpu only. */
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void __flush_tlb_all(void);
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void __flush_tlb_page(unsigned long context, unsigned long vaddr);
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void __flush_tlb_kernel_range(unsigned long start, unsigned long end);
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#ifndef CONFIG_SMP
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static inline void global_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr)
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{
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__flush_tlb_page(CTX_HWBITS(mm->context), vaddr);
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}
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#else /* CONFIG_SMP */
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void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end);
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void smp_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr);
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#define global_flush_tlb_page(mm, vaddr) \
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smp_flush_tlb_page(mm, vaddr)
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#endif /* ! CONFIG_SMP */
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#endif /* _SPARC64_TLBFLUSH_H */
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