diff options
| author | Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> | 2021-03-18 17:06:18 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-03-19 16:55:11 +0100 |
| commit | f4b4bdf29ace71475b18aae9377402a534f09a72 (patch) | |
| tree | 8dc43b58b1f0c03dfd7239f73570b7e61d80ebfc /sound/hda | |
| parent | 12b2b508300d08206674bfb3f53bb84f69cf2555 (diff) | |
ALSA: hda: Revert "ALSA: hda: Allow setting preallocation again for x86"
This reverts commit f8e4ae10de43 ("ALSA: hda: Allow setting
preallocation again for x86").
The reverted commit itself is a revert of c31427d0d21e ("ALSA: hda: No
preallocation on x86 platforms"). It was needed because HDA allowed very
big allocations, up to 1GB per stream. However as previous commit in
this series changes maximum allowed allocation per stream to 4MB, we can
safely revert it back.
On systems where there are a lot of FrontEnds, when
CONFIG_SND_HDA_PREALLOC_SIZE != 0 ALSA core allocates memory for each
FE, which may cause out of memory problems due to per card limit. Force
config to 0 on X86, so memory will be allocated on as needed basis.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=201251#c322
Suggested-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20210318160618.2504068-4-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda')
| -rw-r--r-- | sound/hda/Kconfig | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig index 57595f1552c9..741179ccbd4e 100644 --- a/sound/hda/Kconfig +++ b/sound/hda/Kconfig @@ -21,17 +21,16 @@ config SND_HDA_EXT_CORE select SND_HDA_CORE config SND_HDA_PREALLOC_SIZE - int "Pre-allocated buffer size for HD-audio driver" + int "Pre-allocated buffer size for HD-audio driver" if !SND_DMA_SGBUF range 0 32768 - default 2048 if SND_DMA_SGBUF + default 0 if SND_DMA_SGBUF default 64 if !SND_DMA_SGBUF help Specifies the default pre-allocated buffer-size in kB for the HD-audio driver. A larger buffer (e.g. 2048) is preferred for systems using PulseAudio. The default 64 is chosen just for compatibility reasons. - On x86 systems, the default is 2048 as a reasonable value for - most of modern systems. + On x86 systems, the default is zero as we need no preallocation. Note that the pre-allocation size can be changed dynamically via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too. |