Hi Pranith,
FYI, these changes look nice:
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev
commit 0eb885afb20317016670c1c5dd3a436c91e1e910 ("rcu: Use rcu_gp_kthread_wake() to wake up grace period kthreads")
test case: lkp-a04/aim7/400-disk_rr
It's an in-memory aim7/disk_rr test.
lkp-a04 is an Atom micro server with 8G Memory.
5db6a289a3a0a69 0eb885afb20317016670c1c5d
--------------- -------------------------
150860 ± 1% -25.8% 111937 ± 1% TOTAL softirqs.RCU
2809 ± 1% -12.5% 2457 ± 1% TOTAL vmstat.system.cs
4202 ± 1% -6.9% 3911 ± 1% TOTAL vmstat.system.in
212421 ± 2% -7.7% 196035 ± 3% TOTAL time.involuntary_context_switches