From patchwork Fri Jan 3 18:44:12 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Brodsky X-Patchwork-Id: 13925799 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7A2371FCFD2; Fri, 3 Jan 2025 18:44:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735929884; cv=none; b=BC686Izv7nexb7WdfCRjt+rqPDmvU3tSxHvdcsWvGMi8SuQiLprwHAG7XXTZzaHlffuRgN2HM4HVdBByNBXaRAeOWA5poxk0Fcv6jGuXSzQasaJ2ejQorPw1TuWdf9H1bUspAn5t2NKxWSQYHq/+DBUD+LVrBEQJzvxxV5kitN4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735929884; c=relaxed/simple; bh=mR8qg1pBCZJ1rSajonlyNsaWTXic4sZPDZZsSERH1dI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t83RqVPz5v61X+7MmaMYjfuAfPZYFZhTurN6P6JjIbs1EAvAgoHTPO3jMAUsLxsLw3K+SIkxM/pI7drKcW9s0lHmcBP2kHSo47B5EPa1tsZKXrlVgUpkTwWOM7peFrGZVhuiRUg/9AeonjB6OQi4FjCXeBcPvzUiG+ozS7nBshM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 47F661C25; Fri, 3 Jan 2025 10:45:10 -0800 (PST) Received: from e123572-lin.arm.com (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0FCC13F673; Fri, 3 Jan 2025 10:44:37 -0800 (PST) From: Kevin Brodsky To: linux-mm@kvack.org Cc: Kevin Brodsky , Andrew Morton , Catalin Marinas , Dave Hansen , Linus Walleij , Andy Lutomirski , Peter Zijlstra , "Mike Rapoport (IBM)" , Ryan Roberts , Thomas Gleixner , Will Deacon , Matthew Wilcox , Qi Zheng , linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, loongarch@lists.linux.dev, x86@kernel.org Subject: [PATCH v2 3/6] m68k: mm: Add calls to pagetable_pmd_[cd]tor Date: Fri, 3 Jan 2025 18:44:12 +0000 Message-ID: <20250103184415.2744423-4-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20250103184415.2744423-1-kevin.brodsky@arm.com> References: <20250103184415.2744423-1-kevin.brodsky@arm.com> Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 get_pointer_table() and free_pointer_table() already special-case TABLE_PTE to call pagetable_pte_[cd]tor. Let's do the same at PMD level to improve accounting further. TABLE_PGD and TABLE_PMD are currently defined to the same value, so we first need to separate them. That also implies separating ptable_list for PMD/PGD levels. Acked-by: Dave Hansen Signed-off-by: Kevin Brodsky --- arch/m68k/include/asm/motorola_pgalloc.h | 6 +++--- arch/m68k/mm/motorola.c | 17 ++++++++++++----- 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h index 74a817d9387f..5abe7da8ac5a 100644 --- a/arch/m68k/include/asm/motorola_pgalloc.h +++ b/arch/m68k/include/asm/motorola_pgalloc.h @@ -9,9 +9,9 @@ extern void mmu_page_ctor(void *page); extern void mmu_page_dtor(void *page); enum m68k_table_types { - TABLE_PGD = 0, - TABLE_PMD = 0, /* same size as PGD */ - TABLE_PTE = 1, + TABLE_PGD, + TABLE_PMD, + TABLE_PTE, }; extern void init_pointer_table(void *table, int type); diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c index eab50dda14ee..6c09ccb72e8b 100644 --- a/arch/m68k/mm/motorola.c +++ b/arch/m68k/mm/motorola.c @@ -97,17 +97,19 @@ void mmu_page_dtor(void *page) typedef struct list_head ptable_desc; -static struct list_head ptable_list[2] = { +static struct list_head ptable_list[3] = { LIST_HEAD_INIT(ptable_list[0]), LIST_HEAD_INIT(ptable_list[1]), + LIST_HEAD_INIT(ptable_list[2]), }; #define PD_PTABLE(page) ((ptable_desc *)&(virt_to_page((void *)(page))->lru)) #define PD_PAGE(ptable) (list_entry(ptable, struct page, lru)) #define PD_MARKBITS(dp) (*(unsigned int *)&PD_PAGE(dp)->index) -static const int ptable_shift[2] = { - 7+2, /* PGD, PMD */ +static const int ptable_shift[3] = { + 7+2, /* PGD */ + 7+2, /* PMD */ 6+2, /* PTE */ }; @@ -156,12 +158,17 @@ void *get_pointer_table(int type) if (!(page = (void *)get_zeroed_page(GFP_KERNEL))) return NULL; - if (type == TABLE_PTE) { + switch (type) { + case TABLE_PTE: /* * m68k doesn't have SPLIT_PTE_PTLOCKS for not having * SMP. */ pagetable_pte_ctor(virt_to_ptdesc(page)); + break; + case TABLE_PMD: + pagetable_pmd_ctor(virt_to_ptdesc(page)); + break; } mmu_page_ctor(page); @@ -200,7 +207,7 @@ int free_pointer_table(void *table, int type) /* all tables in page are free, free page */ list_del(dp); mmu_page_dtor((void *)page); - if (type == TABLE_PTE) + if (type == TABLE_PTE || type == TABLE_PMD) pagetable_dtor(virt_to_ptdesc((void *)page)); free_page (page); return 1;