diff options
| author | Kevin Brodsky <kevin.brodsky@arm.com> | 2025-01-03 18:44:15 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-01-25 20:22:24 -0800 |
| commit | d95936a2267c11a38917d5fc7bf3862a64fe13d8 (patch) | |
| tree | 9f145fcc9cf7d7b981118dda8992c9717237687d /include/linux | |
| parent | a9b3c355c2e6388b0a3b67627460a516d88bdbc9 (diff) | |
mm: introduce ctor/dtor at PGD level
Following on from the introduction of P4D-level ctor/dtor, let's finish
the job and introduce ctor/dtor at PGD level. The incurred improvement in
page accounting is minimal - the main motivation is to create a single,
generic place where construction/destruction hooks can be added for all
page table pages.
This patch should cover all architectures and all configurations where
PGDs are one or more regular pages. This excludes any configuration where
PGDs are allocated from a kmem_cache object.
Link: https://lkml.kernel.org/r/20250103184415.2744423-7-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 2949b58fd633..3550cbeed488 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3159,6 +3159,11 @@ static inline void pagetable_p4d_ctor(struct ptdesc *ptdesc) __pagetable_ctor(ptdesc); } +static inline void pagetable_pgd_ctor(struct ptdesc *ptdesc) +{ + __pagetable_ctor(ptdesc); +} + extern void __init pagecache_init(void); extern void free_initmem(void); |