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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-09-03 12:25:56 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-10-28 13:49:30 -0700
commite0775cefb5ede661dbdc0611d7bf3fcd4640005c (patch)
tree58bf71c00bef3462c92649ef80b393c44dd412f5 /init/Kconfig
parent61cfd0970ea27764434fba5c41bdaefb26c44183 (diff)
downloadlinux-linaro-stable-e0775cefb5ede661dbdc0611d7bf3fcd4640005c.tar.gz
rcu: Avoid IPIing idle CPUs from synchronize_sched_expedited()
Currently, synchronize_sched_expedited() sends IPIs to all online CPUs, even those that are idle or executing in nohz_full= userspace. Because idle CPUs and nohz_full= userspace CPUs are in extended quiescent states, there is no need to IPI them in the first place. This commit therefore avoids IPIing CPUs that are already in extended quiescent states. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'init/Kconfig')
0 files changed, 0 insertions, 0 deletions