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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-05-05 06:43:49 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-05-08 07:50:45 +0200 |
| commit | 1217ed1ba5c67393293dfb0f03c353b118dadeb4 (patch) | |
| tree | a765356c8418e134de85fd05d9fe6eda41de859c /include | |
| parent | rcu: provide rcu_virt_note_context_switch() function. (diff) | |
| download | linux-1217ed1ba5c67393293dfb0f03c353b118dadeb4.tar.xz linux-1217ed1ba5c67393293dfb0f03c353b118dadeb4.zip | |
rcu: permit rcu_read_unlock() to be called while holding runqueue locks
Avoid calling into the scheduler while holding core RCU locks. This
allows rcu_read_unlock() to be called while holding the runqueue locks,
but only as long as there was no chance of the RCU read-side critical
section having been preempted. (Otherwise, if RCU priority boosting
is enabled, rcu_read_unlock() might call into the scheduler in order to
unboost itself, which might allows self-deadlock on the runqueue locks
within the scheduler.)
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions