kernel selftest powerpc/math:fpu_preempt consistently timeouts

[Paolo Pisati]

[Impact]

ubuntu_kernel_selftests.powerpc/math:fpu_preempt consistently fails on ppc64el:

...
# timeout set to 45
# selftests: powerpc: fpu_preempt
# test: fpu_preempt
# tags: git_version:Ubuntu-6.8.0-32.32-0-g227b79edaa92
# Waiting for all workers to start...done
# Waiting for 60 seconds to let some workers get preempted...done
# Stopping workers...done
#
not ok 1 selftests: powerpc: fpu_preempt # TIMEOUT 45 seconds
...

[Fix]

Apply the attached fix to bump the timeout back to 300.

# timeout set to 300
# selftests: powerpc/math: fpu_preempt
# test: fpu_preempt
# tags: git_version:Ubuntu-6.8.0-32.32-0-g227b79edaa92
# Waiting for all workers to start...done
# Waiting for 60 seconds to let some workers get preempted...done
# Stopping workers...done
# success: fpu_preempt
ok 1 selftests: powerpc/math: fpu_preempt

[How to test]

Rerun the test after applying the fix.

[Regression potential]

None, we are just bumping the timeout for a single test.