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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-03-18 21:36:51 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-05-10 11:08:31 -0700 |
| commit | d25eb9442bb2c38c1e742f0fa764d7132d72593f (patch) | |
| tree | 0a2604a3b61ce7a0868c021ac945d9826e0d88f1 /drivers/acpi/debug.c | |
| parent | rcu: optionally leave lockdep enabled after RCU lockdep splat (diff) | |
| download | linux-dev-d25eb9442bb2c38c1e742f0fa764d7132d72593f.tar.xz linux-dev-d25eb9442bb2c38c1e742f0fa764d7132d72593f.zip | |
rcu: substitute set_need_resched for sending resched IPIs
This patch adds a check to __rcu_pending() that does a local
set_need_resched() if the current CPU is holding up the current grace
period and if force_quiescent_state() will be called soon. The goal is
to reduce the probability that force_quiescent_state() will need to do
smp_send_reschedule(), which sends an IPI and is therefore more expensive
on most architectures.
Signed-off-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/acpi/debug.c')
0 files changed, 0 insertions, 0 deletions