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mm/powerpc: define pXd_large() with pXd_leaf() 

Patch series "mm/treewide: Replace pXd_large() with pXd_leaf()", v3.

These two APIs are mostly always the same.  It's confusing to have both of
them.  Merge them into one.  Here I used pXd_leaf() only because
pXd_leaf() is a global API which is always defined, while pXd_large() is
not.

We have yet one more API that is similar which is pXd_huge(), but that's
even trickier, so let's do it step by step.

Some special cares are taken for ppc and x86, they're done as separate
cleanups first.  


This patch (of 10):

The two definitions are the same.  The only difference is that pXd_large()
is only defined with THP selected, and only on book3s 64bits.

Instead of implementing it twice, make pXd_large() a macro to pXd_leaf(). 
Define it unconditionally just like pXd_leaf().  This helps to prepare
merging the two APIs.

Link: https://lkml.kernel.org/r/20240305043750.93762-1-peterx@redhat.com
Link: https://lkml.kernel.org/r/20240305043750.93762-2-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Peter Xu 2024-03-05 12:37:41 +08:00 committed by Andrew Morton
parent e35606e416
commit a2aa530d85
2 changed files with 3 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@ -1157,20 +1157,6 @@ pud_hugepage_update(struct mm_struct *mm, unsigned long addr, pud_t *pudp,
return pud_val(*pudp);
}
/*
* returns true for pmd migration entries, THP, devmap, hugetlb
* But compile time dependent on THP config
*/
static inline int pmd_large(pmd_t pmd)
{
return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
}
static inline int pud_large(pud_t pud)
{
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
}
/*
* For radix we should always find H_PAGE_HASHPTE zero. Hence
* the below will work for radix too
@ -1455,6 +1441,7 @@ static inline bool is_pte_rw_upgrade(unsigned long old_val, unsigned long new_va
*/
#define pmd_is_leaf pmd_is_leaf
#define pmd_leaf pmd_is_leaf
#define pmd_large pmd_leaf
static inline bool pmd_is_leaf(pmd_t pmd)
{
return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
@ -1462,6 +1449,7 @@ static inline bool pmd_is_leaf(pmd_t pmd)
#define pud_is_leaf pud_is_leaf
#define pud_leaf pud_is_leaf
#define pud_large pud_leaf
static inline bool pud_is_leaf(pud_t pud)
{
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));

2
arch/powerpc/include/asm/pgtable.h
View File

@ -101,7 +101,7 @@ void poking_init(void);
extern unsigned long ioremap_bot;
extern const pgprot_t protection_map[16];
#ifndef CONFIG_TRANSPARENT_HUGEPAGE
#ifndef pmd_large
#define pmd_large(pmd) 0
#endif