[roll] Roll fuchsia [comp_stats] interior mutability of taskinfo previous behavior had the potential to cause deadlocks in measure_subtree. instead of requiring a lock on the entire struct, move out the data that needs to be locked into their own mutexes. when i tried to measure the effectiveness via ffx inspect, i discovered that i had solved the deadlock but introduced a livelock that starved driver_manager. to fix the livelock, measure_subtree() uses try_lock instead of lock so that the diagnostic stats are skipped if the system is busy rather than blocking callers. Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1553320 Original-Revision: 0f8db705450c110d6bf7768d1abef7b6c4dbddb6 GitOrigin-RevId: 919c217e0fb73aea68be4061d167dcc8e76dc4c1 Change-Id: I97df3e9bdb3921059cb5641fe4b643806915f604
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