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asm-generic/tlb: rename HAVE_RCU_TABLE_FREE

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Towards a more consistent naming scheme.

[akpm@linux-foundation.org: fix sparc64 Kconfig]
Link: http://lkml.kernel.org/r/20200116064531.483522-7-aneesh.kumar@linux.ibm.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra 2020-02-03 17:37:02 -08:00 committed by Linus Torvalds
parent 27796d03c9
commit ff2e6d7259
13 changed files with 21 additions and 21 deletions
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2
arch/Kconfig
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@ -393,7 +393,7 @@ config HAVE_ARCH_JUMP_LABEL
config HAVE_ARCH_JUMP_LABEL_RELATIVE
bool
config HAVE_RCU_TABLE_FREE
config MMU_GATHER_RCU_TABLE_FREE
bool
config HAVE_MMU_GATHER_PAGE_SIZE

2
arch/arm/Kconfig
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@ -102,7 +102,7 @@ config ARM
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_RCU_TABLE_FREE if SMP && ARM_LPAE
select MMU_GATHER_RCU_TABLE_FREE if SMP && ARM_LPAE
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RSEQ
select HAVE_STACKPROTECTOR

2
arch/arm/include/asm/tlb.h
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@ -37,7 +37,7 @@ static inline void __tlb_remove_table(void *_table)
#include <asm-generic/tlb.h>
#ifndef CONFIG_HAVE_RCU_TABLE_FREE
#ifndef CONFIG_MMU_GATHER_RCU_TABLE_FREE
#define tlb_remove_table(tlb, entry) tlb_remove_page(tlb, entry)
#endif

2
arch/arm64/Kconfig
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@ -165,7 +165,7 @@ config ARM64
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_FUNCTION_ARG_ACCESS_API
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_RCU_TABLE_FREE
select MMU_GATHER_RCU_TABLE_FREE
select HAVE_RSEQ
select HAVE_STACKPROTECTOR
select HAVE_SYSCALL_TRACEPOINTS

2
arch/powerpc/Kconfig
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@ -222,7 +222,7 @@ config PPC
select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_RCU_TABLE_FREE
select MMU_GATHER_RCU_TABLE_FREE
select HAVE_MMU_GATHER_PAGE_SIZE
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RELIABLE_STACKTRACE if PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN

2
arch/s390/Kconfig
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@ -169,7 +169,7 @@ config S390
select HAVE_OPROFILE
select HAVE_PCI
select HAVE_PERF_EVENTS
select HAVE_RCU_TABLE_FREE
select MMU_GATHER_RCU_TABLE_FREE
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RELIABLE_STACKTRACE
select HAVE_RSEQ

2
arch/sparc/Kconfig
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@ -64,7 +64,7 @@ config SPARC64
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_KRETPROBES
select HAVE_KPROBES
select HAVE_RCU_TABLE_FREE if SMP
select MMU_GATHER_RCU_TABLE_FREE if SMP
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_DYNAMIC_FTRACE

2
arch/sparc/include/asm/tlb_64.h
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@ -33,7 +33,7 @@ void flush_tlb_pending(void);
* and therefore we don't need a TLBI when freeing page-table pages.
*/
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
#define tlb_needs_table_invalidate() (false)
#endif

2
arch/x86/Kconfig
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@ -203,7 +203,7 @@ config X86
select HAVE_PCI
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_RCU_TABLE_FREE if PARAVIRT
select MMU_GATHER_RCU_TABLE_FREE if PARAVIRT
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RELIABLE_STACKTRACE if X86_64 && (UNWINDER_FRAME_POINTER || UNWINDER_ORC) && STACK_VALIDATION
select HAVE_FUNCTION_ARG_ACCESS_API

4
arch/x86/include/asm/tlb.h
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@ -29,8 +29,8 @@ static inline void tlb_flush(struct mmu_gather *tlb)
* shootdown, enablement code for several hypervisors overrides
* .flush_tlb_others hook in pv_mmu_ops and implements it by issuing
* a hypercall. To keep software pagetable walkers safe in this case we
* switch to RCU based table free (HAVE_RCU_TABLE_FREE). See the comment
* below 'ifdef CONFIG_HAVE_RCU_TABLE_FREE' in include/asm-generic/tlb.h
* switch to RCU based table free (MMU_GATHER_RCU_TABLE_FREE). See the comment
* below 'ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE' in include/asm-generic/tlb.h
* for more details.
*/
static inline void __tlb_remove_table(void *table)

10
include/asm-generic/tlb.h
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@ -126,7 +126,7 @@
* This ensures we call tlb_flush() every time tlb_change_page_size() actually
* changes the size and provides mmu_gather::page_size to tlb_flush().
*
* HAVE_RCU_TABLE_FREE
* MMU_GATHER_RCU_TABLE_FREE
*
* This provides tlb_remove_table(), to be used instead of tlb_remove_page()
* for page directores (__p*_free_tlb()). This provides separate freeing of
@ -142,7 +142,7 @@
* Use this if your architecture lacks an efficient flush_tlb_range().
*/
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
/*
* Semi RCU freeing of the page directories.
*
@ -193,10 +193,10 @@ extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
#else
#ifdef tlb_needs_table_invalidate
#error tlb_needs_table_invalidate() requires HAVE_RCU_TABLE_FREE
#error tlb_needs_table_invalidate() requires MMU_GATHER_RCU_TABLE_FREE
#endif
#endif /* CONFIG_HAVE_RCU_TABLE_FREE */
#endif /* CONFIG_MMU_GATHER_RCU_TABLE_FREE */
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER
@ -235,7 +235,7 @@ extern bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page,
struct mmu_gather {
struct mm_struct *mm;
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
struct mmu_table_batch *batch;
#endif

2
mm/gup.c
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@ -1792,7 +1792,7 @@ EXPORT_SYMBOL(get_user_pages_unlocked);
* Before activating this code, please be aware that the following assumptions
* are currently made:
*
* *) Either HAVE_RCU_TABLE_FREE is enabled, and tlb_remove_table() is used to
* *) Either MMU_GATHER_RCU_TABLE_FREE is enabled, and tlb_remove_table() is used to
* free pages containing page tables or TLB flushing requires IPI broadcast.
*
* *) ptes can be read atomically by the architecture.

8
mm/mmu_gather.c
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@ -91,7 +91,7 @@ bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, int page_
#endif /* HAVE_MMU_GATHER_NO_GATHER */
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
/*
* See the comment near struct mmu_table_batch.
@ -173,11 +173,11 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table)
tlb_table_flush(tlb);
}
#endif /* CONFIG_HAVE_RCU_TABLE_FREE */
#endif /* CONFIG_MMU_GATHER_RCU_TABLE_FREE */
static void tlb_flush_mmu_free(struct mmu_gather *tlb)
{
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
tlb_table_flush(tlb);
#endif
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER
@ -220,7 +220,7 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm,
tlb->batch_count = 0;
#endif
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
tlb->batch = NULL;
#endif
#ifdef CONFIG_HAVE_MMU_GATHER_PAGE_SIZE