kernel: Update MGLRU patchset

The current patches are old, update them from mainline.
Backports taken from https://github.com/yuzhaogoogle/linux/commits/mglru-5.15

Tested-by: Kazuki H <kazukih0205@gmail.com> #mt7622/Linksys E8450 UBI
Signed-off-by: Kazuki H <kazukih0205@gmail.com>

1 files changed, 111 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/020-v6.1-17-mm-add-dummy-pmd_young-for-architectures-not-having-.patch b/target/linux/generic/backport-5.15/020-v6.1-17-mm-add-dummy-pmd_young-for-architectures-not-having-.patch
new file mode 100644
index 0000000000..4e11e82115
--- /dev/null
+++ b/target/linux/generic/backport-5.15/020-v6.1-17-mm-add-dummy-pmd_young-for-architectures-not-having-.patch
@@ -0,0 +1,111 @@
+From c5ec455ebd2b488d91de9d8915a0c8036a2a04dd Mon Sep 17 00:00:00 2001
+From: Juergen Gross <jgross@suse.com>
+Date: Wed, 30 Nov 2022 14:49:41 -0800
+Subject: [PATCH 17/29] mm: add dummy pmd_young() for architectures not having
+ it
+
+In order to avoid #ifdeffery add a dummy pmd_young() implementation as a
+fallback.  This is required for the later patch "mm: introduce
+arch_has_hw_nonleaf_pmd_young()".
+
+Link: https://lkml.kernel.org/r/fd3ac3cd-7349-6bbd-890a-71a9454ca0b3@suse.com
+Signed-off-by: Juergen Gross <jgross@suse.com>
+Acked-by: Yu Zhao <yuzhao@google.com>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: Dave Hansen <dave.hansen@linux.intel.com>
+Cc: Geert Uytterhoeven <geert@linux-m68k.org>
+Cc: "H. Peter Anvin" <hpa@zytor.com>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: Sander Eikelenboom <linux@eikelenboom.it>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+---
+ arch/mips/include/asm/pgtable.h     | 1 +
+ arch/riscv/include/asm/pgtable.h    | 1 +
+ arch/s390/include/asm/pgtable.h     | 1 +
+ arch/sparc/include/asm/pgtable_64.h | 1 +
+ arch/x86/include/asm/pgtable.h      | 1 +
+ include/linux/pgtable.h             | 7 +++++++
+ 6 files changed, 12 insertions(+)
+
+diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
+index 804889b70965..89ab8b4cf971 100644
+--- a/arch/mips/include/asm/pgtable.h
++++ b/arch/mips/include/asm/pgtable.h
+@@ -632,6 +632,7 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd)
+ 	return pmd;
+ }
+ 
++#define pmd_young pmd_young
+ static inline int pmd_young(pmd_t pmd)
+ {
+ 	return !!(pmd_val(pmd) & _PAGE_ACCESSED);
+diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
+index 39b550310ec6..4a64e03dcdd4 100644
+--- a/arch/riscv/include/asm/pgtable.h
++++ b/arch/riscv/include/asm/pgtable.h
+@@ -531,6 +531,7 @@ static inline int pmd_dirty(pmd_t pmd)
+ 	return pte_dirty(pmd_pte(pmd));
+ }
+ 
++#define pmd_young pmd_young
+ static inline int pmd_young(pmd_t pmd)
+ {
+ 	return pte_young(pmd_pte(pmd));
+diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
+index b61426c9ef17..55ff4f22da2d 100644
+--- a/arch/s390/include/asm/pgtable.h
++++ b/arch/s390/include/asm/pgtable.h
+@@ -748,6 +748,7 @@ static inline int pmd_dirty(pmd_t pmd)
+ 	return (pmd_val(pmd) & _SEGMENT_ENTRY_DIRTY) != 0;
+ }
+ 
++#define pmd_young pmd_young
+ static inline int pmd_young(pmd_t pmd)
+ {
+ 	return (pmd_val(pmd) & _SEGMENT_ENTRY_YOUNG) != 0;
+diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
+index 4679e45c8348..bfd10179c137 100644
+--- a/arch/sparc/include/asm/pgtable_64.h
++++ b/arch/sparc/include/asm/pgtable_64.h
+@@ -712,6 +712,7 @@ static inline unsigned long pmd_dirty(pmd_t pmd)
+ 	return pte_dirty(pte);
+ }
+ 
++#define pmd_young pmd_young
+ static inline unsigned long pmd_young(pmd_t pmd)
+ {
+ 	pte_t pte = __pte(pmd_val(pmd));
+diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
+index 01a1763123ff..c4b64ee357fd 100644
+--- a/arch/x86/include/asm/pgtable.h
++++ b/arch/x86/include/asm/pgtable.h
+@@ -136,6 +136,7 @@ static inline int pmd_dirty(pmd_t pmd)
+ 	return pmd_flags(pmd) & _PAGE_DIRTY;
+ }
+ 
++#define pmd_young pmd_young
+ static inline int pmd_young(pmd_t pmd)
+ {
+ 	return pmd_flags(pmd) & _PAGE_ACCESSED;
+diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
+index e6889556e0bf..dec3d890e814 100644
+--- a/include/linux/pgtable.h
++++ b/include/linux/pgtable.h
+@@ -164,6 +164,13 @@ static inline pte_t *virt_to_kpte(unsigned long vaddr)
+ 	return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr);
+ }
+ 
++#ifndef pmd_young
++static inline int pmd_young(pmd_t pmd)
++{
++	return 0;
++}
++#endif
++
+ #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
+ extern int ptep_set_access_flags(struct vm_area_struct *vma,
+ 				 unsigned long address, pte_t *ptep,
+-- 
+2.40.0
+