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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2009-12-02 12:10:15 -0800
committerIngo Molnar <mingo@elte.hu>2009-12-03 11:35:25 +0100
commitd9a3da0699b24a589b27a61e1a5b5bd30d9db669 (patch)
treef7440e396a6c818f3cef514ccc31ab55d88025ef /init
parentcf244dc01bf68e1ad338b82447f8686d24ea4435 (diff)
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rcu: Add expedited grace-period support for preemptible RCU
Implement an synchronize_rcu_expedited() for preemptible RCU that actually is expedited. This uses synchronize_sched_expedited() to force all threads currently running in a preemptible-RCU read-side critical section onto the appropriate ->blocked_tasks[] list, then takes a snapshot of all of these lists and waits for them to drain. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <1259784616158-git-send-email-> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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