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authorIngo Molnar <mingo@kernel.org>2016-09-16 09:08:43 +0200
committerIngo Molnar <mingo@kernel.org>2016-09-16 09:08:43 +0200
commit2d8fbcd13ea1d0be3a7ea5f20c3a5b44b592e79c (patch)
tree5a88bad802e3c2e4f5d241b9596f9102db04f78e /kernel/cpu.c
parent024c7e3756d8a42fc41fe8a9488488b9b09d1dcc (diff)
parentd74b62bc3241af8ebf5141f5b12e89d9d7f341e1 (diff)
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney: - Expedited grace-period changes, most notably avoiding having user threads drive expedited grace periods, using a workqueue instead. - Miscellaneous fixes, including a performance fix for lists that was sent with the lists modifications (second URL below). - CPU hotplug updates, most notably providing exact CPU-online tracking for RCU. This will in turn allow removal of the checks supporting RCU's prior heuristic that was based on the assumption that CPUs would take no longer than one jiffy to come online. - Torture-test updates. - Documentation updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/cpu.c')
-rw-r--r--kernel/cpu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 341bf80f80bd..ff8bc3817dde 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -889,6 +889,7 @@ void notify_cpu_starting(unsigned int cpu)
struct cpuhp_cpu_state *st = per_cpu_ptr(&cpuhp_state, cpu);
enum cpuhp_state target = min((int)st->target, CPUHP_AP_ONLINE);
+ rcu_cpu_starting(cpu); /* Enables RCU usage on this CPU. */
while (st->state < target) {
struct cpuhp_step *step;