[to-be-updated] asm-generic-tlb-stub-out-p4d_free_tlb-if-__pagetable_p4d_folded.patch removed from -mm tree

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The patch titled
     Subject: asm-generic/tlb: stub out p4d_free_tlb() if __PAGETABLE_P4D_FOLDED ...
has been removed from the -mm tree.  Its filename was
     asm-generic-tlb-stub-out-p4d_free_tlb-if-__pagetable_p4d_folded.patch

This patch was dropped because an updated version will be merged

------------------------------------------------------
From: Vineet Gupta <Vineet.Gupta1@xxxxxxxxxxxx>
Subject: asm-generic/tlb: stub out p4d_free_tlb() if __PAGETABLE_P4D_FOLDED ...

... independent of __ARCH_HAS_5LEVEL_HACK

This came up when removing __ARCH_HAS_5LEVEL_HACK for ARC as code bloat
from p4d_free_tlb() despite pud being folded (with 2 levels on ARC)

| bloat-o-meter2 vmlinux-C-elide-pud_free_tlb vmlinux-D-elide-p4d_free_tl=
b
| add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-104 (-104)
| function                                     old     new   delta
| free_pgd_range                               552     422    -130
| Total: Before=3D4137172, After=3D4137042, chg -1.000000%

Link: http://lkml.kernel.org/r/20191009222658.961-3-vgupta@xxxxxxxxxxxx
Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 include/asm-generic/5level-fixup.h |    2 --
 include/asm-generic/tlb.h          |    4 +++-
 2 files changed, 3 insertions(+), 3 deletions(-)

--- a/include/asm-generic/5level-fixup.h~asm-generic-tlb-stub-out-p4d_free_tlb-if-__pagetable_p4d_folded
+++ a/include/asm-generic/5level-fixup.h
@@ -48,8 +48,6 @@ static inline int p4d_present(p4d_t p4d)
 #define __p4d(x)			__pgd(x)
 #define set_p4d(p4dp, p4d)		set_pgd(p4dp, p4d)
 
-#undef p4d_free_tlb
-#define p4d_free_tlb(tlb, x, addr)	do { } while (0)
 #define p4d_free(mm, x)			do { } while (0)
 #define __p4d_free_tlb(tlb, x, addr)	do { } while (0)
 
--- a/include/asm-generic/tlb.h~asm-generic-tlb-stub-out-p4d_free_tlb-if-__pagetable_p4d_folded
+++ a/include/asm-generic/tlb.h
@@ -598,7 +598,7 @@ static inline void tlb_end_vma(struct mm
 #define pud_free_tlb(tlb, pudp, address)	do { } while (0)
 #endif
 
-#ifndef __ARCH_HAS_5LEVEL_HACK
+#ifndef __PAGETABLE_P4D_FOLDED
 #ifndef p4d_free_tlb
 #define p4d_free_tlb(tlb, pudp, address)			\
 	do {							\
@@ -607,6 +607,8 @@ static inline void tlb_end_vma(struct mm
 		__p4d_free_tlb(tlb, pudp, address);		\
 	} while (0)
 #endif
+#else
+#define p4d_free_tlb(tlb, pudp, address)	do { } while (0)
 #endif
 
 #endif /* CONFIG_MMU */
_

Patches currently in -mm which might be from Vineet.Gupta1@xxxxxxxxxxxx are

asm-generic-mm-stub-out-p4dd_clear_bad-if-__pagetable_p4ud_folded.patch
arc-mm-remove-__arch_use_5level_hack.patch
asm-generic-tlb-stub-out-pud_free_tlb-if-nopud.patch
asm-generic-tlb-stub-out-p4d_free_tlb-if-nop4d.patch
asm-generic-tlb-stub-out-pmd_free_tlb-if-nopmd.patch
asm-generic-mm-stub-out-p4ud_clear_bad-if-__pagetable_p4ud_folded.patch




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