Re-deprecate --start-time-[cpu-]us flags
#4500
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roypat
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xmarcalx,
kalyazin,
pb8o and
wearyzen
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Status: Awaiting review
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #4500 +/- ##
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+ Coverage 81.52% 81.54% +0.01%
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Files 243 243
Lines 29839 29848 +9
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+ Hits 24327 24340 +13
+ Misses 5512 5508 -4
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zulinx86
previously approved these changes
Mar 14, 2024
These flags are used by the jailer to pass the value that should be subtracted from the (CPU) time, when emitting the `start_time_us` and `start_time_cpu_us` metrics. They were never meant to be used by end customers. We cannot print a deprecation message, as the jailer unconditionally passes these two flags to Firecracker. This means that the deprecation message would be printed unconditionally for all users of the jailer. Not passing these flags from the jailer to Firecracker is also not an option, because it would result in a change of behavior (e.g. currently the metrics are only emitted if the flags are passed, so this would need to change to have the metrics be _always_ emitted). Signed-off-by: Patrick Roy <roypat@amazon.co.uk> Co-authored-by: Pablo Barbáchano <pablob@amazon.com>
pb8o
reviewed
Mar 14, 2024
Since some functionality is deprecated without a warning message, it is helpful to have a central location to list all deprecations. Signed-off-by: Patrick Roy <roypat@amazon.co.uk>
zulinx86
approved these changes
Mar 15, 2024
pb8o
approved these changes
Mar 15, 2024
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Changes
Deprecates the
--start-time-cpu-usand--start-time-usCLI arguments and adds aDEPRECATIONS.mdfile.Reason
printing the deprecation message caused an observable change in behavior, so the best we can do is "deprecation via changelog".
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CONTRIBUTING.md.PR Checklist
PR.
CHANGELOG.md.TODOs link to an issue.contribution quality standards.
rust-vmm.