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authorrwatson <rwatson@FreeBSD.org>2004-03-22 16:37:32 +0000
committerrwatson <rwatson@FreeBSD.org>2004-03-22 16:37:32 +0000
commitb3e71bbbf2cc88d2707796e78e318c32d769805c (patch)
treeb1e92cba7d46d58ba709ec44f8690c20814efc36
parent9d10e9dea5d8220f25d40ee3e084035d52bddaf9 (diff)
downloadFreeBSD-src-b3e71bbbf2cc88d2707796e78e318c32d769805c.zip
FreeBSD-src-b3e71bbbf2cc88d2707796e78e318c32d769805c.tar.gz
Commit a message to UPDATING indicating that during network stack locking
merges, debug.mpsafenet will no longer be safe to use, and that it should be turned off (which is the default). I will commit a follow-up message to UPDATING (and post to freebsd-current) when it's safe to turn it on, with a description of under what circumstances it is safe to use.
-rw-r--r--UPDATING11
1 files changed, 11 insertions, 0 deletions
diff --git a/UPDATING b/UPDATING
index c2d3714..8ee04d8 100644
--- a/UPDATING
+++ b/UPDATING
@@ -17,6 +17,17 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 5.x IS SLOW:
developers choose to disable these features on build machines
to maximize performance.
+20040322:
+ The debug.mpsafenet tunable controls whether the kernel Giant
+ lock is held across the lower levels of the network stack, and
+ by default is turned off. In the few days following 20040322,
+ the behavior of debug.mpsafenet will change such that this
+ tunable controls Giant over all levels of the network stack.
+ If you are currently setting debug.mpsafenet to 1, you should
+ set it back to 0 (the default) again during the change-over.
+ An additional note will be added to UPDATING when sufficient
+ locking is merged to permit this to take place.
+
20040310:
The FreeBSD/sparc64 platform is changing time_t from 32-bits to
64-bits. This is a very major incompatible change, so people
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