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authorTakashi Iwai <tiwai@suse.de>2008-06-17 16:39:06 +0200
committerTakashi Iwai <tiwai@suse.de>2009-07-08 14:20:20 +0200
commitcc6a8acdeee932f6911d8b236d2c7d6bcc4616f6 (patch)
treeebaadf1a406cf073fd4ce59d5f1f20d499f9cde1 /sound/core/Kconfig
parent8e4a718ff38d8539938ec3421935904c27e00c39 (diff)
downloadlinux-cc6a8acdeee932f6911d8b236d2c7d6bcc4616f6.tar.bz2
ALSA: Fix SG-buffer DMA with non-coherent architectures
Using SG-buffers with dma_alloc_coherent() is often very inefficient on non-coherent architectures because a tracking record could be allocated in addition for each dma_alloc_coherent() call. Instead, simply disable SG-buffers but just allocate normal continuous buffers on non-supported (currently all but x86) architectures. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/Kconfig')
-rw-r--r--sound/core/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 6061fb5f4e1c..c15682a2f9db 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -206,4 +206,8 @@ config SND_PCM_XRUN_DEBUG
config SND_VMASTER
bool
+config SND_DMA_SGBUF
+ def_bool y
+ depends on X86
+
source "sound/core/seq/Kconfig"