linux-kernel - [PATCH v6 16/18] asm-generic/tlb: Remove HAVE_GENERIC_MMU

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Date:   Tue, 19 Feb 2019 11:32:04 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     will.deacon@....com, aneesh.kumar@...ux.vnet.ibm.com,
        akpm@...ux-foundation.org, npiggin@...il.com
Cc:     linux-arch@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        linux@...linux.org.uk, heiko.carstens@...ibm.com, riel@...riel.com
Subject: [PATCH v6 16/18] asm-generic/tlb: Remove HAVE_GENERIC_MMU_GATHER

Since all architectures are now using it, it is redundant.

Acked-by: Will Deacon <will.deacon@....com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 include/asm-generic/tlb.h |    1 -
 mm/mmu_gather.c           |    4 ----
 2 files changed, 5 deletions(-)

--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -142,7 +142,6 @@
  *
  *  Use this if your architecture lacks an efficient flush_tlb_range().
  */
-#define HAVE_GENERIC_MMU_GATHER
 
 #ifdef CONFIG_HAVE_RCU_TABLE_FREE
 /*
--- a/mm/mmu_gather.c
+++ b/mm/mmu_gather.c
@@ -11,8 +11,6 @@
 #include <asm/pgalloc.h>
 #include <asm/tlb.h>
 
-#ifdef HAVE_GENERIC_MMU_GATHER
-
 #ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER
 
 static bool tlb_next_batch(struct mmu_gather *tlb)
@@ -109,8 +107,6 @@ void tlb_flush_mmu(struct mmu_gather *tl
 	tlb_flush_mmu_free(tlb);
 }
 
-#endif /* HAVE_GENERIC_MMU_GATHER */
-
 #ifdef CONFIG_HAVE_RCU_TABLE_FREE
 
 /*