On Wed, May 16, 2018 at 6:29 PM, Matt Macy <mm...@freebsd.org> wrote: > > Author: mmacy > Date: Wed May 16 22:29:20 2018 > New Revision: 333690 > URL: https://svnweb.freebsd.org/changeset/base/333690 > > Log: > hwpmc: Implement per-thread counters for PMC sampling > > This implements per-thread counters for PMC sampling. The thread > descriptors are stored in a list attached to the process descriptor. > These thread descriptors can store any per-thread information necessary > for current or future features. For the moment, they just store the counters > for sampling. > > The thread descriptors are created when the process descriptor is created. > Additionally, thread descriptors are created or freed when threads > are started or stopped. Because the thread exit function is called in a > critical section, we can't directly free the thread descriptors. Hence, > they are freed to a cache, which is also used as a source of allocations > when needed for new threads. > > Approved by: sbruno > Obtained from: jtl > Sponsored by: Juniper Networks, Limelight Networks > Differential Revision: https://reviews.freebsd.org/D15335
Thanks! Jonathan _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
