Since: 83bfc7e793b5 ("ASoC: SOF: core: unregister clients and machine drivers
in .shutdown")
we wait for all the workloads to be completed during shutdown. This was done to
avoid a stall once the device is started again.
Unfortunately this has the side effect of stalling kexec(), if the userspace
is frozen. Let's handle that case.
To: Pierre-Louis Bossart <[email protected]>
To: Liam Girdwood <[email protected]>
To: Peter Ujfalusi <[email protected]>
To: Bard Liao <[email protected]>
To: Ranjani Sridharan <[email protected]>
To: Kai Vehmanen <[email protected]>
To: Daniel Baluta <[email protected]>
To: Mark Brown <[email protected]>
To: Jaroslav Kysela <[email protected]>
To: Takashi Iwai <[email protected]>
To: Eric Biederman <[email protected]>
To: Chromeos Kdump <[email protected]>
To: Steven Rostedt <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Ricardo Ribalda <[email protected]>
---
Changes in v6:
- Check if we are in kexec with the userspace frozen.
- Link to v5:
https://lore.kernel.org/r/[email protected]
Changes in v5:
- Edit subject prefix.
- Link to v4:
https://lore.kernel.org/r/[email protected]
Changes in v4:
- Do not call snd_sof_machine_unregister from shutdown.
- Link to v3:
https://lore.kernel.org/r/[email protected]
Changes in v3:
- Wrap pm_freezing in a function.
- Link to v2:
https://lore.kernel.org/r/[email protected]
Changes in v2:
- Only use pm_freezing if CONFIG_FREEZER .
- Link to v1:
https://lore.kernel.org/r/[email protected]
---
Ricardo Ribalda (2):
kexec: Introduce kexec_with_frozen_processes
ASoC: SOF: Fix deadlock when shutdown a frozen userspace
include/linux/kexec.h | 3 +++
kernel/kexec_core.c | 5 +++++
sound/soc/sof/core.c | 4 +++-
3 files changed, 11 insertions(+), 1 deletion(-)
---
base-commit: 4312098baf37ee17a8350725e6e0d0e8590252d4
change-id: 20221127-snd-freeze-1ee143228326
Best regards,
--
Ricardo Ribalda <[email protected]>
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