Messages in this thread | | | From | "Jie, Yang" <> | Subject | RE: [PATCH v2 2/2] ALSA: set no sound proc fs for reduced memory footprint | Date | Wed, 27 May 2015 07:40:24 +0000 |
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> -----Original Message----- > From: Takashi Iwai [mailto:tiwai@suse.de] > Sent: Wednesday, May 27, 2015 3:23 PM > To: Jie, Yang > Cc: Sudip Mukherjee; broonie@kernel.org; alsa-devel@alsa-project.org; > linux-kernel@vger.kernel.org; Girdwood, Liam R; Zhang, Vivian > Subject: Re: [PATCH v2 2/2] ALSA: set no sound proc fs for reduced memory > footprint > > At Wed, 27 May 2015 07:09:24 +0000, > Jie, Yang wrote: > > > > > -----Original Message----- > > > From: Takashi Iwai [mailto:tiwai@suse.de] > > > Sent: Wednesday, May 27, 2015 2:19 PM > > > To: Jie, Yang > > > Cc: Sudip Mukherjee; broonie@kernel.org; > > > alsa-devel@alsa-project.org; linux-kernel@vger.kernel.org; Girdwood, > > > Liam R; Zhang, Vivian > > > Subject: Re: [PATCH v2 2/2] ALSA: set no sound proc fs for reduced > > > memory footprint > > > > > > At Wed, 27 May 2015 05:38:01 +0000, > > > Jie, Yang wrote: > > > > > > > > > -----Original Message----- > > > > > From: Sudip Mukherjee [mailto:sudipm.mukherjee@gmail.com] > > > > > Sent: Wednesday, May 27, 2015 12:50 PM > > > > > To: Jie, Yang > > > > > Cc: tiwai@suse.de; broonie@kernel.org; > > > > > alsa-devel@alsa-project.org; > > > > > linux- kernel@vger.kernel.org; Girdwood, Liam R; Zhang, Vivian > > > > > Subject: Re: [PATCH v2 2/2] ALSA: set no sound proc fs for > > > > > reduced memory footprint > > > > > > > > > > On Tue, May 26, 2015 at 09:13:57PM +0800, Jie Yang wrote: > > > > > > Disable sound proc fs, when CONFIG_SND_NO_PROC_FS is > selected, > > > > > > which can save about 9KB memory size for reducing memory > > > > > > footprint > > > purpose. > > > > > > --- > > > > > missing Signed-off-by. > > > > > > > > Thanks for pointing out. > > > > > > > > Signed-off-by: Jie Yang <yang.jie@intel.com> > > > > > > > > Takashi, do I need to resend them? > > > > > > Yes, but you seen to have missed my first comment. Here again: > > > > Sorry about the missing. :) > > > > > > > > > ========================================================== > > > ====== > > > > +menuconfig SND_REDUCED_MEMORY_FOOTPRINT > > > > + bool "Reduced Memory Footprint Support" > > > > + default n > > > > + help > > > > + Say 'Y' to enable Reduced Memory Footprint Support, which may > > > > + reduce code size and data footprint as much as possible. > > > > > > I'd like to move this into sound/core. > > > Also, the kconfig name appears a bit too lengthy to me. > > > > ========================================================== > > > ====== > > > > > > And, after reading this again, I wonder whether we just take the > > > existing CONFIG_EXPERT for allowing the selection of more knobs like > > > CONFIG_SND_PROC_FS. > > > > > > SND_PROC_FS > > > bool "Sound proc file" if EXPERT > > > > Sounds good. Then we don't need 'SND_REDUCED_MEMORY_FOOTPRINT' > > any more? Or we can keep it as root menu of the set of items, just as > below? > > (I changed it to SND_SMALL_FOOTPRINT, as your comment above) > > I originally thought to select items from SND_SMALL_FOOTPRINT, but this > doesn't seem to work. At least, "de"selecting isn't supported by Kconfig (i.e. > set SND_PROC_FS=n when SND_SMALL_FOOTPRINT=y). > We may have SND_NO_PROC_FS and select it, but it's too bad. > > So, IMO, we can drop SND_SMALL_FOOTPRINT but let users choose each > knob when EXPERT=y.
Firstly, I used sound/Kconfig but not sound/core/Kconfig, because some efforts for reducing footprint are based on sound/asoc/(e.g. dapm, dpcm, ...).
Secondly, if we drop SND_SMALL_FOOTPRINT, then we have to add several(may up to ~10) knobs under the sound menu(Sound Card Support), which looks messy and not neat.
~Keyon
> > > Takashi
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