On Thu, 22 May 2025 at 07:54, Ekansh Gupta <ekansh.gu...@oss.qualcomm.com> wrote: > > > > On 5/19/2025 6:59 PM, Dmitry Baryshkov wrote: > > On Mon, May 19, 2025 at 04:36:13PM +0530, Ekansh Gupta wrote: > >> > >> On 5/19/2025 3:46 PM, Dmitry Baryshkov wrote: > >>> On Tue, May 13, 2025 at 09:58:22AM +0530, Ekansh Gupta wrote: > >>>> Remote heap allocations are not organized in a maintainable manner, > >>>> leading to potential issues with memory management. As the remote > >>> Which issues? I think I have been asking this question previously. > >>> Please expand the commit message here. > >> This is mostly related to the memory clean-up and the other patch where > >> unmap request was added, I'll try to pull more details about the issue > >> scenario. > > Thanks. > > > >>>> heap allocations are maintained in fl mmaps list, the allocations > >>>> will go away if the audio daemon process is killed but there are > >>> What is audio daemon process? > >> As audio PD on DSP is static, there is HLOS process(audio daemon) required > >> to > >> attach to audio PD to fulfill it's memory and file operation requirements. > >> > >> This daemon can be thought of to be somewhat similar to rootPD(adsprpcd) or > >> sensorsPD(sscrpcd) daemons. Although, there is a slight difference in case > >> of audio > >> daemon as it is required to take additional information and resources to > >> audio PD > >> while attaching. > > I find it a little bit strange to see 'required' here, while we have > > working audio setup on all up platforms up to and including SM8750 > > without any additional daemons. This is the primary reason for my > > question: what is it, why is it necessary, when is it necessary, etc. > > This daemon is critical to facilitate dynamic loading and memory > requirement for audio PD(running on DSP for audio processing). Even > for audio testing on SM8750, I believe Alexey was enabling this daemon.
Could you please point out the daemon sources? As far as I remember, we didn't need it on any of the platforms up to and including SM8650, that's why I'm asking. > > What is it? > - HLOS process to attached to audio PD to fulfill the requirements that > cannot be met by DSP alone(like file operations, memory etc.) > > Why is it necessary? > - There are limitation on DSP for which the PD requirements needs to be > taken to HLOS. For example, DSP does not have it's own file system, so > any file operation request it PD(say for dynamic loading) needs to be > taken to HLOS(using listener/reverse calls) and is fulfilled there. > Similarly memory requirement is another example. > > When is it necessary? > - When audio PD needs to perform any task that requires HLOS relying > operations like dynamic loading etc. This doesn't exactly answer the question. I can play and capture audio on most of the platforms that I tested without using extra daemon. So, when is it necessary? -- With best wishes Dmitry
