From: Steven Rostedt
Date: Tue May 20 2008 - 00:46:32 EST

We are pleased to announce the tree, which can be
downloaded from the location:


Information on the RT patch can be found at:


Changes since

- Read Write locks with multiple readers (Steven Rostedt)

The previous versions of the RT tree would serialize the RW locks
for all readers to allow for priority inheritance to take place.
This change allows for multiple readers but still maintain priority
inheritance. The number of readers that can hold a lock at any time
may be limited by

sysctl kernel.rwlocks_reader_limit

Setting this to <= 0 will give allow for any number of readers. The
default is set to NR_CPUS.

** Note: I made this change separate to allow for easy testing in case
bugs have been introduced by this change.

to build a tree, the following patches should be applied:


And like always, my RT version of Matt Mackall's ketchup will get this
for you nicely:


The broken out patches are also available.

-- Steve

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