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authorPaul E. McKenney2018-02-14 23:20:45 +0100
committerPaul E. McKenney2018-02-21 01:21:13 +0100
commit6308f3477510e15391ac82deaee66f8425339014 (patch)
tree8f2613e517725420d4d00204d5925fb21647dd94 /tools/testing
parentsrcu: Remove dead code in srcu_gp_end() (diff)
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rcu: Remove SRCU throttling
The code in srcu_gp_end() inserts a delay every 0x3ff grace periods in order to prevent SRCU grace-period work from consuming an entire CPU when there is a long sequence of expedited SRCU grace-period requests. However, all of SRCU's grace-period work is carried out in workqueues, which are in turn within kthreads, which are automatically throttled as needed by the scheduler. In particular, if there is plenty of idle time, there is no point in throttling. This commit therefore removes the expedited SRCU grace-period throttling. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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