Currently, the mm selftests build process can be quite noisy.

First, it leaks raw compiler errors during the liburing feature probe if
the headers are missing, which is confusing since the build system already
handles this gracefully with a clear warning.

Second, the specific 32-bit and 64-bit compilation targets ignore the
standard kbuild verbosity settings, always printing their full compiler
commands even during a default quiet build.

Notes:
  Andrew mentioned he hopes this patch merge into kbuild tree, so I resend
  to linux-kbuild@vger.kernel.org.

V2:

 - Drop 2/4, 3/4 from v1 to v2, since Andrew wasn't able to confirm the
   patch works for the rarely happening issue now, so I decided to just
   hand on the process of the parallel issue.

 - Refine the 4/4 patch only to hide compiler errors when missing liburing.

Li Wang (2):
  selftests/mm: respect build verbosity settings for 32/64-bit targets
  selftests/mm: suppress compiler error in liburing check

 tools/testing/selftests/mm/Makefile        | 9 ++++++---
 tools/testing/selftests/mm/check_config.sh | 2 +-
 2 files changed, 7 insertions(+), 4 deletions(-)

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2.53.0