[PATCH v4 0/2] Add test to validate udelay

[David Riley]

This change adds a module and a script that makes use of it to
validate that udelay delays for at least as long as requested
(as compared to ktime).

Changes since v1:
- allow udelay() to be 0.5% faster than requested as per feedback

Changes since v2:
- fix permissions on udelay_test.sh script
- update commit message to indicate what this test targets
- fixed checkpatch whitespace error
- rebased

Changes since v3:
- fixed xtensa compile warning (and other 32-bit platforms which
  use the generic do_div)
- renamed and moved config option

David Riley (2):
  kernel: time: Add udelay_test module to validate udelay
  tools: add script to test udelay

 kernel/time/Makefile      |   1 +
 kernel/time/udelay_test.c | 168 ++++++++++++++++++++++++++++++++++++++++++++++
 lib/Kconfig.debug         |   9 +++
 tools/time/udelay_test.sh |  66 ++++++++++++++++++
 4 files changed, 244 insertions(+)
 create mode 100644 kernel/time/udelay_test.c
 create mode 100755 tools/time/udelay_test.sh

-- 
2.0.0

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