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Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Chris Zankel , Max Filippov , Kees Cook , "Paul E. McKenney" , Peter Zijlstra , Frederic Weisbecker , Andrew Morton , Ard Biesheuvel , Sami Tolvanen , Juerg Haefliger , Geert Uytterhoeven , Anshuman Khandual , Niklas Schnelle , "Russell King (Oracle)" , Linus Walleij , Sebastian Reichel , "Mike Rapoport (IBM)" , "Kirill A. Shutemov" , Zi Yan Subject: [PATCH 06/12] arch: Declare screen_info in Date: Thu, 29 Jun 2023 13:45:45 +0200 Message-ID: <20230629121952.10559-7-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230629121952.10559-1-tzimmermann@suse.de> References: <20230629121952.10559-1-tzimmermann@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230629_052001_464243_53806CF4 X-CRM114-Status: GOOD ( 20.74 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The variable screen_info does not exist on all architectures. Declare it in . All architectures that do declare it will provide it via . Add the Kconfig token ARCH_HAS_SCREEN_INFO to guard against access on architectures that don't provide screen_info. Signed-off-by: Thomas Zimmermann Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Guo Ren Cc: Brian Cain Cc: Huacai Chen Cc: WANG Xuerui Cc: Thomas Bogendoerfer Cc: Dinh Nguyen Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Yoshinori Sato Cc: Rich Felker Cc: John Paul Adrian Glaubitz Cc: "David S. Miller" Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: x86@kernel.org Cc: "H. Peter Anvin" Cc: Chris Zankel Cc: Max Filippov Cc: Helge Deller Cc: Arnd Bergmann Cc: Kees Cook Cc: "Paul E. McKenney" Cc: Peter Zijlstra Cc: Frederic Weisbecker Cc: Andrew Morton Cc: Ard Biesheuvel Cc: Sami Tolvanen Cc: Juerg Haefliger Cc: Geert Uytterhoeven Cc: Anshuman Khandual Cc: Niklas Schnelle Cc: "Russell King (Oracle)" Cc: Linus Walleij Cc: Sebastian Reichel Cc: "Mike Rapoport (IBM)" Cc: "Kirill A. Shutemov" Cc: Zi Yan Acked-by: WANG Xuerui # loongarch --- arch/Kconfig | 6 ++++++ arch/alpha/Kconfig | 1 + arch/arm/Kconfig | 1 + arch/arm64/Kconfig | 1 + arch/csky/Kconfig | 1 + arch/hexagon/Kconfig | 1 + arch/ia64/Kconfig | 1 + arch/loongarch/Kconfig | 1 + arch/mips/Kconfig | 1 + arch/nios2/Kconfig | 1 + arch/powerpc/Kconfig | 1 + arch/riscv/Kconfig | 1 + arch/sh/Kconfig | 1 + arch/sparc/Kconfig | 1 + arch/x86/Kconfig | 1 + arch/xtensa/Kconfig | 1 + drivers/video/Kconfig | 3 +++ include/asm-generic/Kbuild | 1 + include/asm-generic/screen_info.h | 12 ++++++++++++ include/linux/screen_info.h | 2 +- 20 files changed, 38 insertions(+), 1 deletion(-) create mode 100644 include/asm-generic/screen_info.h diff --git a/arch/Kconfig b/arch/Kconfig index 205fd23e0cada..2f58293fd7bcb 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1466,6 +1466,12 @@ config ARCH_HAS_NONLEAF_PMD_YOUNG address translations. Page table walkers that clear the accessed bit may use this capability to reduce their search space. +config ARCH_HAS_SCREEN_INFO + bool + help + Selected by architectures that provide a global instance of + screen_info. + source "kernel/gcov/Kconfig" source "scripts/gcc-plugins/Kconfig" diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index a5c2b1aa46b02..d749011d88b14 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -4,6 +4,7 @@ config ALPHA default y select ARCH_32BIT_USTAT_F_TINODE select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_SCREEN_INFO select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ARCH_NO_PREEMPT diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0fb4b218f6658..a9d01ee67a90e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -15,6 +15,7 @@ config ARM select ARCH_HAS_MEMBARRIER_SYNC_CORE select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PTE_SPECIAL if ARM_LPAE + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SET_MEMORY select ARCH_STACKWALK diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 343e1e1cae10a..21addc4715bb3 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -36,6 +36,7 @@ config ARM64 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PTE_DEVMAP select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_SET_MEMORY diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 4df1f8c9d170b..28444e581fc1f 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -10,6 +10,7 @@ config CSKY select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_SCREEN_INFO select ARCH_INLINE_READ_LOCK if !PREEMPTION select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index 54eadf2651786..cc683c0a43d34 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -5,6 +5,7 @@ comment "Linux Kernel Configuration for Hexagon" config HEXAGON def_bool y select ARCH_32BIT_OFF_T + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_NO_PREEMPT select DMA_GLOBAL_POOL diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index e79f15e32a451..8b1e785e6d53d 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -10,6 +10,7 @@ config IA64 bool select ARCH_BINFMT_ELF_EXTRA_PHDRS select ARCH_HAS_DMA_MARK_CLEAN + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER select ARCH_MIGHT_HAVE_PC_PARPORT diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index d38b066fc931b..6aab2fb7753da 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -13,6 +13,7 @@ config LOONGARCH select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_INLINE_READ_LOCK if !PREEMPTION select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 675a8660cb85a..c0ae09789cb6d 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -10,6 +10,7 @@ config MIPS select ARCH_HAS_KCOV select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI) + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index e5936417d3cd3..7183eea282212 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -3,6 +3,7 @@ config NIOS2 def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_DMA_PREP_COHERENT + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_HAS_DMA_SET_UNCACHED diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index bff5820b7cda1..b1acad3076180 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -148,6 +148,7 @@ config PPC select ARCH_HAS_PTE_DEVMAP if PPC_BOOK3S_64 select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SET_MEMORY select ARCH_HAS_STRICT_KERNEL_RWX if (PPC_BOOK3S || PPC_8xx || 40x) && !HIBERNATION select ARCH_HAS_STRICT_KERNEL_RWX if PPC_85xx && !HIBERNATION && !RANDOMIZE_BASE diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 5966ad97c30c3..b5a48f8424af9 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -29,6 +29,7 @@ config RISCV select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PMEM_API select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SET_DIRECT_MAP if MMU select ARCH_HAS_SET_MEMORY if MMU select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 04b9550cf0070..001f5149952b4 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -10,6 +10,7 @@ config SUPERH select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HIBERNATION_POSSIBLE if MMU select ARCH_MIGHT_HAVE_PC_PARPORT diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 8535e19062f65..e4bfb80b48cfe 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -13,6 +13,7 @@ config 64BIT config SPARC bool default y + select ARCH_HAS_SCREEN_INFO select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI select ARCH_MIGHT_HAVE_PC_SERIO select DMA_OPS diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 53bab123a8ee4..d7c2bf4ee403d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -91,6 +91,7 @@ config X86 select ARCH_HAS_NONLEAF_PMD_YOUNG if PGTABLE_LEVELS > 2 select ARCH_HAS_UACCESS_FLUSHCACHE if X86_64 select ARCH_HAS_COPY_MC if X86_64 + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SET_MEMORY select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_STRICT_KERNEL_RWX diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3c6e5471f025b..c6cbd7459939c 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -8,6 +8,7 @@ config XTENSA select ARCH_HAS_DMA_PREP_COHERENT if MMU select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_KCOV + select ARCH_HAS_SCREEN_INFO select ARCH_HAS_SYNC_DMA_FOR_CPU if MMU select ARCH_HAS_SYNC_DMA_FOR_DEVICE if MMU select ARCH_HAS_DMA_SET_UNCACHED if MMU diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 8b2b9ac37c3df..d4a72bea56be0 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -21,6 +21,9 @@ config STI_CORE config VIDEO_CMDLINE bool +config ARCH_HAS_SCREEN_INFO + bool + config VIDEO_NOMODESET bool default n diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild index 941be574bbe00..5e5d4158a4b4b 100644 --- a/include/asm-generic/Kbuild +++ b/include/asm-generic/Kbuild @@ -47,6 +47,7 @@ mandatory-y += percpu.h mandatory-y += pgalloc.h mandatory-y += preempt.h mandatory-y += rwonce.h +mandatory-y += screen_info.h mandatory-y += sections.h mandatory-y += serial.h mandatory-y += shmparam.h diff --git a/include/asm-generic/screen_info.h b/include/asm-generic/screen_info.h new file mode 100644 index 0000000000000..6fd0e50fabfcd --- /dev/null +++ b/include/asm-generic/screen_info.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _ASM_GENERIC_SCREEN_INFO_H +#define _ASM_GENERIC_SCREEN_INFO_H + +#include + +#if defined(CONFIG_ARCH_HAS_SCREEN_INFO) +extern struct screen_info screen_info; +#endif + +#endif /* _ASM_GENERIC_SCREEN_INFO_H */ diff --git a/include/linux/screen_info.h b/include/linux/screen_info.h index eab7081392d50..c764b9a51c24b 100644 --- a/include/linux/screen_info.h +++ b/include/linux/screen_info.h @@ -4,6 +4,6 @@ #include -extern struct screen_info screen_info; +#include #endif /* _SCREEN_INFO_H */