From 2fa74c26e4d0d089bcd1f1c00db44b2a15ff9ffd Mon Sep 17 00:00:00 2001 From: Nicholas Piggin <npiggin@gmail.com> Date: Mon, 12 Jul 2021 17:26:34 +0800 Subject: [PATCH] powerpc: inline huge vmap supported functions mainline inclusion from mainline-5.13-rc1 commit 8309c9d717024660185fab3c96705a9d7ed0d842 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I3ZGKZ CVE: NA ------------------------------------------------- This allows unsupported levels to be constant folded away, and so p4d_free_pud_page can be removed because it's no longer linked to. Link: https://lkml.kernel.org/r/20210317062402.533919-8-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Ding Tianhong <dingtianhong@huawei.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Chen Wandun <chenwandun@huawei.com> Reviewed-by: Tong Tiangen <tongtiangen@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- arch/powerpc/include/asm/vmalloc.h | 19 ++++++++++++++++--- arch/powerpc/mm/book3s64/radix_pgtable.c | 21 --------------------- 2 files changed, 16 insertions(+), 24 deletions(-) diff --git a/arch/powerpc/include/asm/vmalloc.h b/arch/powerpc/include/asm/vmalloc.h index 105abb73f075..3f0c153befb0 100644 --- a/arch/powerpc/include/asm/vmalloc.h +++ b/arch/powerpc/include/asm/vmalloc.h @@ -1,12 +1,25 @@ #ifndef _ASM_POWERPC_VMALLOC_H #define _ASM_POWERPC_VMALLOC_H +#include <asm/mmu.h> #include <asm/page.h> #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -bool arch_vmap_p4d_supported(pgprot_t prot); -bool arch_vmap_pud_supported(pgprot_t prot); -bool arch_vmap_pmd_supported(pgprot_t prot); +static inline bool arch_vmap_p4d_supported(pgprot_t prot) +{ + return false; +} + +static inline bool arch_vmap_pud_supported(pgprot_t prot) +{ + /* HPT does not cope with large pages in the vmalloc area */ + return radix_enabled(); +} + +static inline bool arch_vmap_pmd_supported(pgprot_t prot) +{ + return radix_enabled(); +} #endif #endif /* _ASM_POWERPC_VMALLOC_H */ diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index c8758a97f6c0..4f5f2de1d644 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -1121,22 +1121,6 @@ void radix__ptep_modify_prot_commit(struct vm_area_struct *vma, set_pte_at(mm, addr, ptep, pte); } -bool arch_vmap_pud_supported(pgprot_t prot) -{ - /* HPT does not cope with large pages in the vmalloc area */ - return radix_enabled(); -} - -bool arch_vmap_pmd_supported(pgprot_t prot) -{ - return radix_enabled(); -} - -int p4d_free_pud_page(p4d_t *p4d, unsigned long addr) -{ - return 0; -} - int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot) { pte_t *ptep = (pte_t *)pud; @@ -1220,8 +1204,3 @@ int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) return 1; } - -bool arch_vmap_p4d_supported(pgprot_t prot) -{ - return false; -} -- GitLab