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Message-Id: <20240208062608.44351-3-byungchul@sk.com>
Date: Thu, 8 Feb 2024 15:26:02 +0900
From: Byungchul Park <byungchul@...com>
To: linux-kernel@...r.kernel.org,
linux-mm@...ck.org
Cc: kernel_team@...ynix.com,
akpm@...ux-foundation.org,
ying.huang@...el.com,
namit@...are.com,
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Subject: [RESEND PATCH v7 2/8] arm64: tlbflush: Add APIs manipulating tlb batch's arch data
This is a preparation for migrc mechanism that requires to manipulate
tlb batch's arch data. Even though arm64 does nothing with it, arch
with CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH should provide the APIs.
Signed-off-by: Byungchul Park <byungchul@...com>
---
arch/arm64/include/asm/tlbflush.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index bb2c2833a987..4f2094843e7a 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -328,6 +328,25 @@ static inline void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch)
dsb(ish);
}
+static inline void arch_tlbbatch_clear(struct arch_tlbflush_unmap_batch *batch)
+{
+ /* nothing to do */
+}
+
+static inline void arch_tlbbatch_fold(struct arch_tlbflush_unmap_batch *bdst,
+ struct arch_tlbflush_unmap_batch *bsrc)
+{
+ /* nothing to do */
+}
+
+static inline bool arch_tlbbatch_done(struct arch_tlbflush_unmap_batch *bdst,
+ struct arch_tlbflush_unmap_batch *bsrc)
+{
+ /* nothing to do */
+
+ return false;
+}
+
/*
* This is meant to avoid soft lock-ups on large TLB flushing ranges and not
* necessarily a performance improvement.
--
2.17.1
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