[PATCH 03/12] iommu-helper: mark iommu_is_span_boundary as inline
From: Christoph Hellwig <hch@lst.de>
Date: 2018-04-23 17:04:48
Also in:
linux-arm-kernel, linux-iommu, linux-mips, linux-mm, linux-pci, sparclinux
Subsystem:
alpha port, arm port, arm64 port (aarch64 architecture), library code, linux for powerpc (32-bit and 64-bit), mips, mips/loongson64 architecture, parisc architecture, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Russell King, Catalin Marinas, Will Deacon, Andrew Morton, Madhavan Srinivasan, Michael Ellerman, Thomas Bogendoerfer, Huacai Chen, Jiaxun Yang, "James E.J. Bottomley", Helge Deller, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
This avoids selecting IOMMU_HELPER just for this function. And we only use it once or twice in normal builds so this often even is a size reduction. Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/alpha/Kconfig | 3 --- arch/arm/Kconfig | 3 --- arch/arm64/Kconfig | 3 --- arch/ia64/Kconfig | 3 --- arch/mips/cavium-octeon/Kconfig | 4 ---- arch/mips/loongson64/Kconfig | 4 ---- arch/mips/netlogic/Kconfig | 3 --- arch/powerpc/Kconfig | 1 - arch/unicore32/mm/Kconfig | 3 --- arch/x86/Kconfig | 2 +- drivers/parisc/Kconfig | 5 ----- include/linux/iommu-helper.h | 13 ++++++++++--- lib/iommu-helper.c | 12 +----------- 13 files changed, 12 insertions(+), 47 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index b2022885ced8..3ff735a722af 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig@@ -345,9 +345,6 @@ config PCI_DOMAINS config PCI_SYSCALL def_bool PCI -config IOMMU_HELPER - def_bool PCI - config ALPHA_NONAME bool depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a7f8e7f4b88f..2f79222c5c02 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig@@ -1781,9 +1781,6 @@ config SECCOMP config SWIOTLB def_bool y -config IOMMU_HELPER - def_bool SWIOTLB - config PARAVIRT bool "Enable paravirtualization code" help
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index eb2cf4938f6d..fbef5d3de83f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig@@ -252,9 +252,6 @@ config SMP config SWIOTLB def_bool y -config IOMMU_HELPER - def_bool SWIOTLB - config KERNEL_MODE_NEON def_bool y
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index bbe12a038d21..862c5160c09d 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig@@ -613,6 +613,3 @@ source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig" - -config IOMMU_HELPER - def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig
index b5eee1a57d6c..647ed158ac98 100644
--- a/arch/mips/cavium-octeon/Kconfig
+++ b/arch/mips/cavium-octeon/Kconfig@@ -67,16 +67,12 @@ config CAVIUM_OCTEON_LOCK_L2_MEMCPY help Lock the kernel's implementation of memcpy() into L2. -config IOMMU_HELPER - bool - config NEED_SG_DMA_LENGTH bool config SWIOTLB def_bool y select DMA_DIRECT_OPS - select IOMMU_HELPER select NEED_SG_DMA_LENGTH config OCTEON_ILM
diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig
index 72af0c183969..5efb2e63878e 100644
--- a/arch/mips/loongson64/Kconfig
+++ b/arch/mips/loongson64/Kconfig@@ -130,9 +130,6 @@ config LOONGSON_UART_BASE default y depends on EARLY_PRINTK || SERIAL_8250 -config IOMMU_HELPER - bool - config NEED_SG_DMA_LENGTH bool
@@ -141,7 +138,6 @@ config SWIOTLB default y depends on CPU_LOONGSON3 select DMA_DIRECT_OPS - select IOMMU_HELPER select NEED_SG_DMA_LENGTH select NEED_DMA_MAP_STATE
diff --git a/arch/mips/netlogic/Kconfig b/arch/mips/netlogic/Kconfig
index 7fcfc7fe9f14..5c5ee0e05a17 100644
--- a/arch/mips/netlogic/Kconfig
+++ b/arch/mips/netlogic/Kconfig@@ -83,9 +83,6 @@ endif config NLM_COMMON bool -config IOMMU_HELPER - bool - config NEED_SG_DMA_LENGTH bool
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c32a181a7cbb..43e3c8e4e7f4 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig@@ -484,7 +484,6 @@ config IOMMU_HELPER config SWIOTLB bool "SWIOTLB support" default n - select IOMMU_HELPER ---help--- Support for IO bounce buffering for systems without an IOMMU. This allows us to DMA to the full physical address space on
diff --git a/arch/unicore32/mm/Kconfig b/arch/unicore32/mm/Kconfig
index e9154a59d561..3f105e00c432 100644
--- a/arch/unicore32/mm/Kconfig
+++ b/arch/unicore32/mm/Kconfig@@ -44,9 +44,6 @@ config SWIOTLB def_bool y select DMA_DIRECT_OPS -config IOMMU_HELPER - def_bool SWIOTLB - config NEED_SG_DMA_LENGTH def_bool SWIOTLB
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 00fcf81f2c56..cb2c7ecc1fea 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig@@ -931,7 +931,7 @@ config SWIOTLB config IOMMU_HELPER def_bool y - depends on CALGARY_IOMMU || GART_IOMMU || SWIOTLB || AMD_IOMMU + depends on CALGARY_IOMMU || GART_IOMMU config MAXSMP bool "Enable Maximum number of SMP Processors and NUMA Nodes"
diff --git a/drivers/parisc/Kconfig b/drivers/parisc/Kconfig
index 3a102a84d637..5a48b5606110 100644
--- a/drivers/parisc/Kconfig
+++ b/drivers/parisc/Kconfig@@ -103,11 +103,6 @@ config IOMMU_SBA depends on PCI_LBA default PCI_LBA -config IOMMU_HELPER - bool - depends on IOMMU_SBA || IOMMU_CCIO - default y - source "drivers/pcmcia/Kconfig" endmenu
diff --git a/include/linux/iommu-helper.h b/include/linux/iommu-helper.h
index cb9a9248c8c0..70d01edcbf8b 100644
--- a/include/linux/iommu-helper.h
+++ b/include/linux/iommu-helper.h@@ -2,6 +2,7 @@ #ifndef _LINUX_IOMMU_HELPER_H #define _LINUX_IOMMU_HELPER_H +#include <linux/bug.h> #include <linux/kernel.h> static inline unsigned long iommu_device_max_index(unsigned long size,
@@ -14,9 +15,15 @@ static inline unsigned long iommu_device_max_index(unsigned long size, return size; } -extern int iommu_is_span_boundary(unsigned int index, unsigned int nr, - unsigned long shift, - unsigned long boundary_size); +static inline int iommu_is_span_boundary(unsigned int index, unsigned int nr, + unsigned long shift, unsigned long boundary_size) +{ + BUG_ON(!is_power_of_2(boundary_size)); + + shift = (shift + index) & (boundary_size - 1); + return shift + nr > boundary_size; +} + extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size, unsigned long start, unsigned int nr, unsigned long shift,
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index ded1703e7e64..92a9f243c0e2 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c@@ -4,17 +4,7 @@ */ #include <linux/bitmap.h> -#include <linux/bug.h> - -int iommu_is_span_boundary(unsigned int index, unsigned int nr, - unsigned long shift, - unsigned long boundary_size) -{ - BUG_ON(!is_power_of_2(boundary_size)); - - shift = (shift + index) & (boundary_size - 1); - return shift + nr > boundary_size; -} +#include <linux/iommu-helper.h> unsigned long iommu_area_alloc(unsigned long *map, unsigned long size, unsigned long start, unsigned int nr,
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2.17.0