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Default branch: MAIN
Current tag: riastradh-drm2-base
Revision 1.200 / (download) - annotate - [select for diffs], Mon Mar 11 21:37:54 2013 UTC (4 years, 7 months ago) by pooka
CVS Tags: riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, khorben-n900, agc-symver-base, agc-symver
Branch point for: rmind-smpnet
Changes since 1.199: +15 -4 lines
Diff to previous 1.199 (colored)
In pool_cache_put_slow(), pool_get() can block (it does mutex_enter()), so we need to retry if curlwp took a context switch during the call. Otherwise, CPU-local invariants can get screwed up: panic: kernel diagnostic assertion "cur->pcg_avail == cur->pcg_size" failed This is (was) very easy to reproduce by just running: while : ; do RUMP_NCPU=32 ./a.out ; done where a.out only calls rump_init(). But, any situation there's contention and a pool doesn't have emptygroups would do.
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