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Differential D21135

Avoid calling blessed() more often than needed.
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Authored by markj on Aug 2 2019, 3:25 PM.
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jhb
Commits
rS350540: Only check the blessings table for known LORs.
Summary

Only call it once we've detected a reversal and have set a flag in the
corresponding matrix entries. The badstacks handler now must also omit
stacks corresponding to blessed lock pairs.

Test Plan

Checked that we don't log blessed LORs in badstacks.

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Repository
rS FreeBSD src repository - subversion
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head/
sys/
kern/
19 lines

Diff 60395

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head/sys/kern/subr_witness.c

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