From 308c09f17da4adc53935115dbeb5bce4f067d8f9 Mon Sep 17 00:00:00 2001 From: Laura Abbott Date: Fri, 8 Aug 2014 14:23:25 -0700 Subject: [PATCH] lib/scatterlist: make ARCH_HAS_SG_CHAIN an actual Kconfig Rather than have architectures #define ARCH_HAS_SG_CHAIN in an architecture specific scatterlist.h, make it a proper Kconfig option and use that instead. At same time, remove the header files are are now mostly useless and just include asm-generic/scatterlist.h. [sfr@canb.auug.org.au: powerpc files now need asm/dma.h] Signed-off-by: Laura Abbott Acked-by: Thomas Gleixner [x86] Acked-by: Benjamin Herrenschmidt [powerpc] Acked-by: Heiko Carstens Cc: Russell King Cc: Tony Luck Cc: Fenghua Yu Cc: Paul Mackerras Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: "James E.J. Bottomley" Cc: Martin Schwidefsky Signed-off-by: Stephen Rothwell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/Kconfig | 1 + arch/arm/include/asm/Kbuild | 1 + arch/arm/include/asm/scatterlist.h | 12 ------------ arch/arm64/Kconfig | 1 + arch/ia64/Kconfig | 1 + arch/ia64/include/asm/Kbuild | 1 + arch/ia64/include/asm/scatterlist.h | 7 ------- arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/Kbuild | 1 + arch/powerpc/include/asm/scatterlist.h | 17 ----------------- arch/powerpc/mm/dma-noncoherent.c | 1 + arch/powerpc/platforms/44x/warp.c | 1 + arch/powerpc/platforms/52xx/efika.c | 1 + arch/powerpc/platforms/amigaone/setup.c | 1 + arch/s390/Kconfig | 1 + arch/s390/include/asm/Kbuild | 1 + arch/s390/include/asm/scatterlist.h | 3 --- arch/sparc/Kconfig | 1 + arch/sparc/include/asm/Kbuild | 1 + arch/sparc/include/asm/scatterlist.h | 8 -------- arch/um/include/asm/Kbuild | 1 + arch/x86/Kconfig | 1 + arch/x86/include/asm/Kbuild | 3 ++- arch/x86/include/asm/scatterlist.h | 8 -------- include/linux/scatterlist.h | 2 +- include/scsi/scsi.h | 2 +- lib/Kconfig | 7 +++++++ lib/scatterlist.c | 4 ++-- 28 files changed, 30 insertions(+), 60 deletions(-) delete mode 100644 arch/arm/include/asm/scatterlist.h delete mode 100644 arch/ia64/include/asm/scatterlist.h delete mode 100644 arch/powerpc/include/asm/scatterlist.h delete mode 100644 arch/s390/include/asm/scatterlist.h delete mode 100644 arch/sparc/include/asm/scatterlist.h delete mode 100644 arch/x86/include/asm/scatterlist.h diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d31c500653a2..8e9dbcbcf5af 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -83,6 +83,7 @@ config ARM . config ARM_HAS_SG_CHAIN + select ARCH_HAS_SG_CHAIN bool config NEED_SG_DMA_LENGTH diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index f5a357601983..70cd84eb7fda 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -22,6 +22,7 @@ generic-y += poll.h generic-y += preempt.h generic-y += resource.h generic-y += rwsem.h +generic-y += scatterlist.h generic-y += sections.h generic-y += segment.h generic-y += sembuf.h diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h deleted file mode 100644 index cefdb8f898a1..000000000000 --- a/arch/arm/include/asm/scatterlist.h +++ /dev/null @@ -1,12 +0,0 @@ -#ifndef _ASMARM_SCATTERLIST_H -#define _ASMARM_SCATTERLIST_H - -#ifdef CONFIG_ARM_HAS_SG_CHAIN -#define ARCH_HAS_SG_CHAIN -#endif - -#include -#include -#include - -#endif /* _ASMARM_SCATTERLIST_H */ diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index b0f9c9db9590..fd4e81a4e1ce 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,6 +1,7 @@ config ARM64 def_bool y select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + select ARCH_HAS_SG_CHAIN select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_USE_CMPXCHG_LOCKREF select ARCH_SUPPORTS_ATOMIC_RMW diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 44a6915ab13d..c84c88bbbbd7 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -28,6 +28,7 @@ config IA64 select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP select HAVE_VIRT_CPU_ACCOUNTING + select ARCH_HAS_SG_CHAIN select VIRT_TO_BUS select ARCH_DISCARD_MEMBLOCK select GENERIC_IRQ_PROBE diff --git a/arch/ia64/include/asm/Kbuild b/arch/ia64/include/asm/Kbuild index 0da4aa2602ae..e8317d2d6c8d 100644 --- a/arch/ia64/include/asm/Kbuild +++ b/arch/ia64/include/asm/Kbuild @@ -5,5 +5,6 @@ generic-y += hash.h generic-y += kvm_para.h generic-y += mcs_spinlock.h generic-y += preempt.h +generic-y += scatterlist.h generic-y += trace_clock.h generic-y += vtime.h diff --git a/arch/ia64/include/asm/scatterlist.h b/arch/ia64/include/asm/scatterlist.h deleted file mode 100644 index 08fd93bff1db..000000000000 --- a/arch/ia64/include/asm/scatterlist.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef _ASM_IA64_SCATTERLIST_H -#define _ASM_IA64_SCATTERLIST_H - -#include -#define ARCH_HAS_SG_CHAIN - -#endif /* _ASM_IA64_SCATTERLIST_H */ diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 80b94b0add1f..4bc7b62fb4b6 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -111,6 +111,7 @@ config PPC select HAVE_DMA_API_DEBUG select HAVE_OPROFILE select HAVE_DEBUG_KMEMLEAK + select ARCH_HAS_SG_CHAIN select GENERIC_ATOMIC64 if PPC32 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select HAVE_PERF_EVENTS diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild index 3fb1bc432f4f..7f23f162ce9c 100644 --- a/arch/powerpc/include/asm/Kbuild +++ b/arch/powerpc/include/asm/Kbuild @@ -4,5 +4,6 @@ generic-y += hash.h generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += rwsem.h +generic-y += scatterlist.h generic-y += trace_clock.h generic-y += vtime.h diff --git a/arch/powerpc/include/asm/scatterlist.h b/arch/powerpc/include/asm/scatterlist.h deleted file mode 100644 index de1f620bd5c9..000000000000 --- a/arch/powerpc/include/asm/scatterlist.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef _ASM_POWERPC_SCATTERLIST_H -#define _ASM_POWERPC_SCATTERLIST_H -/* - * Copyright (C) 2001 PPC64 Team, IBM Corp - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include -#include - -#define ARCH_HAS_SG_CHAIN - -#endif /* _ASM_POWERPC_SCATTERLIST_H */ diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index 7b6c10750179..d85e86aac7fb 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -33,6 +33,7 @@ #include #include +#include #include "mmu_decl.h" diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c index 534574a97ec9..3a104284b338 100644 --- a/arch/powerpc/platforms/44x/warp.c +++ b/arch/powerpc/platforms/44x/warp.c @@ -25,6 +25,7 @@ #include #include #include +#include static __initdata struct of_device_id warp_of_bus[] = { diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c index 6e19b0ad5d26..3feffde9128d 100644 --- a/arch/powerpc/platforms/52xx/efika.c +++ b/arch/powerpc/platforms/52xx/efika.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include diff --git a/arch/powerpc/platforms/amigaone/setup.c b/arch/powerpc/platforms/amigaone/setup.c index 03aabc0e16ac..2fe12046279e 100644 --- a/arch/powerpc/platforms/amigaone/setup.c +++ b/arch/powerpc/platforms/amigaone/setup.c @@ -24,6 +24,7 @@ #include #include #include +#include extern void __flush_disable_L1(void); diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 8ca60f8d5683..05c78bb5f570 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -145,6 +145,7 @@ config S390 select TTY select VIRT_CPU_ACCOUNTING select VIRT_TO_BUS + select ARCH_HAS_SG_CHAIN config SCHED_OMIT_FRAME_POINTER def_bool y diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild index 57892a8a9055..b3fea0722ff1 100644 --- a/arch/s390/include/asm/Kbuild +++ b/arch/s390/include/asm/Kbuild @@ -4,4 +4,5 @@ generic-y += clkdev.h generic-y += hash.h generic-y += mcs_spinlock.h generic-y += preempt.h +generic-y += scatterlist.h generic-y += trace_clock.h diff --git a/arch/s390/include/asm/scatterlist.h b/arch/s390/include/asm/scatterlist.h deleted file mode 100644 index 6d45ef6c12a7..000000000000 --- a/arch/s390/include/asm/scatterlist.h +++ /dev/null @@ -1,3 +0,0 @@ -#include - -#define ARCH_HAS_SG_CHAIN diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 4692c90936f1..a537816613f9 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -42,6 +42,7 @@ config SPARC select MODULES_USE_ELF_RELA select ODD_RT_SIGACTION select OLD_SIGSUSPEND + select ARCH_HAS_SG_CHAIN config SPARC32 def_bool !64BIT diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild index a45821818003..cdd1b447bb6c 100644 --- a/arch/sparc/include/asm/Kbuild +++ b/arch/sparc/include/asm/Kbuild @@ -15,6 +15,7 @@ generic-y += mcs_spinlock.h generic-y += module.h generic-y += mutex.h generic-y += preempt.h +generic-y += scatterlist.h generic-y += serial.h generic-y += trace_clock.h generic-y += types.h diff --git a/arch/sparc/include/asm/scatterlist.h b/arch/sparc/include/asm/scatterlist.h deleted file mode 100644 index 92bb638313f8..000000000000 --- a/arch/sparc/include/asm/scatterlist.h +++ /dev/null @@ -1,8 +0,0 @@ -#ifndef _SPARC_SCATTERLIST_H -#define _SPARC_SCATTERLIST_H - -#include - -#define ARCH_HAS_SG_CHAIN - -#endif /* !(_SPARC_SCATTERLIST_H) */ diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild index a5e4b6068213..7bd64aa2e94a 100644 --- a/arch/um/include/asm/Kbuild +++ b/arch/um/include/asm/Kbuild @@ -21,6 +21,7 @@ generic-y += param.h generic-y += pci.h generic-y += percpu.h generic-y += preempt.h +generic-y += scatterlist.h generic-y += sections.h generic-y += switch_to.h generic-y += topology.h diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index bf2405053af5..c915cc6e40be 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -96,6 +96,7 @@ config X86 select IRQ_FORCED_THREADING select HAVE_BPF_JIT if X86_64 select HAVE_ARCH_TRANSPARENT_HUGEPAGE + select ARCH_HAS_SG_CHAIN select CLKEVT_I8253 select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_IOMAP diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild index 3ca9762e1649..3bf000fab0ae 100644 --- a/arch/x86/include/asm/Kbuild +++ b/arch/x86/include/asm/Kbuild @@ -5,6 +5,7 @@ genhdr-y += unistd_64.h genhdr-y += unistd_x32.h generic-y += clkdev.h -generic-y += early_ioremap.h generic-y += cputime.h +generic-y += early_ioremap.h generic-y += mcs_spinlock.h +generic-y += scatterlist.h diff --git a/arch/x86/include/asm/scatterlist.h b/arch/x86/include/asm/scatterlist.h deleted file mode 100644 index 4240878b9d76..000000000000 --- a/arch/x86/include/asm/scatterlist.h +++ /dev/null @@ -1,8 +0,0 @@ -#ifndef _ASM_X86_SCATTERLIST_H -#define _ASM_X86_SCATTERLIST_H - -#include - -#define ARCH_HAS_SG_CHAIN - -#endif /* _ASM_X86_SCATTERLIST_H */ diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index f4ec8bbcb372..ed8f9e70df9b 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -136,7 +136,7 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents, struct scatterlist *sgl) { -#ifndef ARCH_HAS_SG_CHAIN +#ifndef CONFIG_ARCH_HAS_SG_CHAIN BUG(); #endif diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index e6df23cae7be..261e708010da 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -31,7 +31,7 @@ enum scsi_timeouts { * Like SCSI_MAX_SG_SEGMENTS, but for archs that have sg chaining. This limit * is totally arbitrary, a setting of 2048 will get you at least 8mb ios. */ -#ifdef ARCH_HAS_SG_CHAIN +#ifdef CONFIG_ARCH_HAS_SG_CHAIN #define SCSI_MAX_SG_CHAIN_SEGMENTS 2048 #else #define SCSI_MAX_SG_CHAIN_SEGMENTS SCSI_MAX_SG_SEGMENTS diff --git a/lib/Kconfig b/lib/Kconfig index df872659ddd3..a5ce0c7f6c30 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -508,4 +508,11 @@ config UCS2_STRING source "lib/fonts/Kconfig" +# +# sg chaining option +# + +config ARCH_HAS_SG_CHAIN + def_bool n + endmenu diff --git a/lib/scatterlist.c b/lib/scatterlist.c index b4415fceb7e7..9cdf62f8accd 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -73,7 +73,7 @@ EXPORT_SYMBOL(sg_nents); **/ struct scatterlist *sg_last(struct scatterlist *sgl, unsigned int nents) { -#ifndef ARCH_HAS_SG_CHAIN +#ifndef CONFIG_ARCH_HAS_SG_CHAIN struct scatterlist *ret = &sgl[nents - 1]; #else struct scatterlist *sg, *ret = NULL; @@ -255,7 +255,7 @@ int __sg_alloc_table(struct sg_table *table, unsigned int nents, if (nents == 0) return -EINVAL; -#ifndef ARCH_HAS_SG_CHAIN +#ifndef CONFIG_ARCH_HAS_SG_CHAIN if (WARN_ON_ONCE(nents > max_ents)) return -EINVAL; #endif -- GitLab