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CVS commit: [riastradh-drm2] src/sys/external/bsd/drm2

Module Name:    src
Committed By:   riastradh
Date:           Mon Dec 30 04:52:11 UTC 2013

Modified Files:
        src/sys/external/bsd/drm2/include/linux [riastradh-drm2]: idr.h
        src/sys/external/bsd/drm2/linux [riastradh-drm2]: linux_idr.c

Log Message:
Rewrite idr to use a dumber algorithm that admits pserialized use.

drm2 doesn't use them with RCU, but it does use them under spin locks,
so an rwlock is not kosher.

This algorithm is super-dumb, but the idr API has changed upstream,
and this is not performance-critical, so it's not worth investing
time in a better algorithm at the moment.

To generate a diff of this commit:
cvs rdiff -u -r1.1.2.6 -r1.1.2.7 \
cvs rdiff -u -r1.1.2.9 -r1.1.2.10 src/sys/external/bsd/drm2/linux/linux_idr.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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