Gaurav Tendolkar 857731124c nvadsp: adspff: use kthread to schedule file io ...

- Workqueue scheduling latency causes issues for
  adsp apps requiring real time behaviour. Hence
  use RT kthread to schedule the file io functions
- file open with O_TRUNC flag may take long time
  Hence we open the file just once and just reset
  the read/write pointers in a file close call
- Expose sysfs entry to actually close all files
  opened by kernel

Bug 1846449
Jira EMA-847

Change-Id: I3c130b36e5f5f5a0e65ddb4c44efc8754fb006d2
Signed-off-by: Gaurav Tendolkar <gtendolkar@nvidia.com>
Reviewed-on: http://git-master/r/1314984
(cherry picked from commit 00f5d0b48aa0df9a720c6fd15b4cffd827408375)
Signed-off-by: Hariharan Sivaraman <hariharans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2029203
(cherry picked from commit 6760f7d61a589b90a8c156a38e4453b518a20b05)
Reviewed-on: https://git-master.nvidia.com/r/2030551
(cherry picked from commit c136844cd4147c25478fe39a15122a1f43553079)
Reviewed-on: https://git-master.nvidia.com/r/2150778
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Niranjan Dighe <ndighe@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nitin Pai <npai@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2023-06-20 15:13:15 +00:00

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