diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-01-20 13:04:06 -0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-01-24 12:23:35 -0500 |
| commit | 7844572c633964c864d9f32dc3f2a8ffe5d70371 (patch) | |
| tree | a0402ba054805b019692ba5a1e865f6849569957 | |
| parent | 1eec9e2befd35270b19a91bb633db595dc55975e (diff) | |
| download | op-kernel-dev-7844572c633964c864d9f32dc3f2a8ffe5d70371.zip op-kernel-dev-7844572c633964c864d9f32dc3f2a8ffe5d70371.tar.gz | |
lib/dma-noop: Only build dma_noop_ops for s390 and m32r
Reduce the kernel size by only building dma_noop_ops for those
architectures that actually use it. This was suggested by
Christoph Hellwig.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | arch/m32r/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/Kconfig | 1 | ||||
| -rw-r--r-- | lib/Kconfig | 5 | ||||
| -rw-r--r-- | lib/Makefile | 2 |
4 files changed, 8 insertions, 1 deletions
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index d227a69..9547446 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -18,6 +18,7 @@ config M32R select MODULES_USE_ELF_RELA select HAVE_DEBUG_STACKOVERFLOW select CPU_NO_EFFICIENT_FFS + select DMA_NOOP_OPS config SBUS bool diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index c6722112..38ad423 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -137,6 +137,7 @@ config S390 select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG select HAVE_DMA_CONTIGUOUS + select DMA_NOOP_OPS select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_EFFICIENT_UNALIGNED_ACCESS diff --git a/lib/Kconfig b/lib/Kconfig index 260a80e..b6baf06 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -395,6 +395,11 @@ config HAS_DMA depends on !NO_DMA default y +config DMA_NOOP_OPS + bool + depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT) + default n + config CHECK_SIGNATURE bool diff --git a/lib/Makefile b/lib/Makefile index bc4073a..ada06d5 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -26,7 +26,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o -lib-$(CONFIG_HAS_DMA) += dma-noop.o +lib-$(CONFIG_DMA_NOOP_OPS) += dma-noop.o lib-y += kobject.o klist.o obj-y += lockref.o |
