Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2024-12-28 08:43:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

iommu-helper: mark iommu_is_span_boundary as inline

Browse Source 
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>
This commit is contained in:
Christoph Hellwig 2018-04-03 15:41:07 +02:00
parent 33782714dc
commit 79c1879ee5
13 changed files with 12 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/alpha/Kconfig
View File

@ -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

3
arch/arm/Kconfig
View File

@ -1780,9 +1780,6 @@ config SECCOMP
config SWIOTLB
def_bool y
config IOMMU_HELPER
def_bool SWIOTLB
config PARAVIRT
bool "Enable paravirtualization code"
help

3
arch/arm64/Kconfig
View File

@ -251,9 +251,6 @@ config SMP
config SWIOTLB
def_bool y
config IOMMU_HELPER
def_bool SWIOTLB
config KERNEL_MODE_NEON
def_bool y

3
arch/ia64/Kconfig
View File

@ -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)

4
arch/mips/cavium-octeon/Kconfig
View File

@ -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

4
arch/mips/loongson64/Kconfig
View File

@ -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

3
arch/mips/netlogic/Kconfig
View File

@ -83,9 +83,6 @@ endif
config NLM_COMMON
bool
config IOMMU_HELPER
bool
config NEED_SG_DMA_LENGTH
bool

1
arch/powerpc/Kconfig
View File

@ -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

3
arch/unicore32/mm/Kconfig
View File

@ -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

2
arch/x86/Kconfig
View File

@ -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"

5
drivers/parisc/Kconfig
View File

@ -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

13
include/linux/iommu-helper.h
View File

@ -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,

12
lib/iommu-helper.c
View File

@ -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,