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author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-01-27 13:17:02 -0800 |
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committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-04-18 11:38:18 -0700 |
commit | 0f9be8cabbc343218dd2807af7308656be113045 (patch) | |
tree | d99e786bc49f6d77bbd1fa4fa7c4df31de9fed8d /kernel/uid16.c | |
parent | 9577df9a3122af08fff84b8a1a60dccf524a3891 (diff) | |
download | blackbird-obmc-linux-0f9be8cabbc343218dd2807af7308656be113045.tar.gz blackbird-obmc-linux-0f9be8cabbc343218dd2807af7308656be113045.zip |
rcu: Eliminate flavor scan in rcu_momentary_dyntick_idle()
The rcu_momentary_dyntick_idle() function scans the RCU flavors, checking
that one of them still needs a quiescent state before doing an expensive
atomic operation on the ->dynticks counter. However, this check reduces
overhead only after a rare race condition, and increases complexity. This
commit therefore removes the scan and the mechanism enabling the scan.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/uid16.c')
0 files changed, 0 insertions, 0 deletions