summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2018-04-03 16:41:07 +0300
committerChristoph Hellwig <hch@lst.de>2018-05-09 07:55:44 +0300
commit79c1879ee5473e3404469b07f9bccfe6d0814b93 (patch)
tree7dfd4e224cd8bf1e4790ba8505fd25569f019155
parent33782714dc53cfb9b8b02e852f3d239e5820cf42 (diff)
downloadlinux-79c1879ee5473e3404469b07f9bccfe6d0814b93.tar.xz
iommu-helper: mark iommu_is_span_boundary as inline
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>
-rw-r--r--arch/alpha/Kconfig3
-rw-r--r--arch/arm/Kconfig3
-rw-r--r--arch/arm64/Kconfig3
-rw-r--r--arch/ia64/Kconfig3
-rw-r--r--arch/mips/cavium-octeon/Kconfig4
-rw-r--r--arch/mips/loongson64/Kconfig4
-rw-r--r--arch/mips/netlogic/Kconfig3
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/unicore32/mm/Kconfig3
-rw-r--r--arch/x86/Kconfig2
-rw-r--r--drivers/parisc/Kconfig5
-rw-r--r--include/linux/iommu-helper.h13
-rw-r--r--lib/iommu-helper.c12
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 c723d3e375e8..6bbf7b928b4f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1780,9 +1780,6 @@ 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 2005e4baaada..a553deb60fc2 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -251,9 +251,6 @@ 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 f55aec969cfa..ec2a39741f91 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -612,6 +612,3 @@ 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 d81e0d4f1f68..5cf611f799be 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -483,7 +483,6 @@ 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 13bf2c727524..a43f21e7cfc5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -934,7 +934,7 @@ 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,