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(parent: 4fa3b6c) | patch
rcu: Make RCU_FAST_NO_HZ respect nohz= boot parameter
authorPaul E. McKenney <paul.mckenney@linaro.org>
Sun, 24 Jun 2012 17:15:02 +0000 (10:15 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Mon, 2 Jul 2012 19:34:43 +0000 (12:34 -0700)
commit9d2ad24306f2fafc3612e5a216aab31f9e56e879
tree6ced8145e842e29aaedda3d9453c74b6f0c92b4ftree | snapshot (tar.gz zip)
parent4fa3b6cb1bc8c14b81b4c8ffdfd3f2500a7e9367commit | diff
rcu: Make RCU_FAST_NO_HZ respect nohz= boot parameter

If the nohz= boot parameter disables nohz, then RCU_FAST_NO_HZ needs to
also disable itself.  This commit therefore checks for tick_nohz_enabled
being zero, disabling rcu_prepare_for_idle() if so.  This commit assumes
that tick_nohz_enabled can change at runtime: If this is not the case,
then a simpler approach suffices.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
kernel/rcutree.h diff | blob | blame | history
kernel/rcutree_plugin.h diff | blob | blame | history
kernel/time/tick-sched.c diff | blob | blame | history