linux-kernel - [PATCH 2/4] csky/tlb: Remove tlb

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Date:   Fri, 08 Jul 2022 09:18:04 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Jann Horn <jannh@...gle.com>,
        Linus Torvalds <torvalds@...uxfoundation.org>,
        Will Deacon <will@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        peterz@...radead.org, Dave Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guo Ren <guoren@...nel.org>, David Miller <davem@...emloft.net>
Subject: [PATCH 2/4] csky/tlb: Remove tlb_flush() define

The previous patch removed the tlb_flush_end() implementation which
used tlb_flush_range(). This means:

 - csky did double invalidates, a range invalidate per vma and a full
   invalidate at the end

 - csky actually has range invalidates and as such the generic
   tlb_flush implementation is more efficient for it.

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 arch/csky/include/asm/tlb.h |    2 --
 1 file changed, 2 deletions(-)

--- a/arch/csky/include/asm/tlb.h
+++ b/arch/csky/include/asm/tlb.h
@@ -4,8 +4,6 @@
 #define __ASM_CSKY_TLB_H
 
 #include <asm/cacheflush.h>
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
 #include <asm-generic/tlb.h>
 
 #endif /* __ASM_CSKY_TLB_H */