tkudav 957b19092f gpu: nvgpu: Enable Quiesce on all builds ...

Make Recovery and quiesce co-exist to support quiesce state
on unrecoverrable errors. Currently, the quiesce code is wrapped
under ifndef CONFIG_NVGPU_RECOVERY. Isolate the quiesce code from
recovery config, thereby enabling it on all builds.

On Linux, the hung_task checker(check_hung_uninterruptible_tasks()
in kernel/hung_task.c) complains that quiesce thread is stuck for
more than 120 seconds.

INFO: task sw-quiesce:1068 blocked for more than 120 seconds.

The wait time of more than 120 seconds is expected as quiesce
thread will wait until quiesce call is triggered on fatal
unrecoverable errors. However, the INFO print upsets the
kernel_warning_test(KWT) on Linux builds. To fix the failing
KWT, change the quiesce task to interruptible instead of
uninterruptible as checker only looks at uninterruptible tasks.

Bug 2919899
JIRA NVGPU-5479

Change-Id: Ibd1023506859d8371998b785e881ace52cb5f030
Signed-off-by: tkudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2342774
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
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GVS: Gerrit_Virtual_Submit
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2020-12-15 14:13:28 -06:00

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