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authorimp <imp@FreeBSD.org>2013-02-21 15:35:48 +0000
committerimp <imp@FreeBSD.org>2013-02-21 15:35:48 +0000
commit0e93b8cbe63f40b8199f451dd9059aa862ebe342 (patch)
tree713c1a971b39a76baeae926c0fe9ceb573f05157 /sys/compat
parent323dc265fee59e32efcba8259f0481a82dab15f6 (diff)
downloadFreeBSD-src-0e93b8cbe63f40b8199f451dd9059aa862ebe342.zip
FreeBSD-src-0e93b8cbe63f40b8199f451dd9059aa862ebe342.tar.gz
Use critical_enter/critical_exit around the time sensitive part of
this code to depessimize the worst case we've lived with silently and uneventfully for the past 12 years. Add a comment about a refinement for those needing more assurance of accuracy. Fix ddb's show rtc command deadlock potential when debugging rtc code by not taking the lock if we're in the debugger. If you need a thumb to count the number of people that have encountered this, I'd be surprised. Submitted by: bde
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