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    Subject[patch 01/16] RCU read sched notrace
    Add _notrace version to rcu_read_*_sched().

    Impact: new API, useful for tracepoints and markers.

    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
    CC: Peter Zijlstra <peterz@infradead.org>
    CC: Paul E McKenney <paulmck@linux.vnet.ibm.com>
    CC: 'Ingo Molnar' <mingo@elte.hu>
    CC: akpm@linux-foundation.org
    ---
    include/linux/rcupdate.h | 2 ++
    1 file changed, 2 insertions(+)

    Index: linux-2.6-lttng/include/linux/rcupdate.h
    ===================================================================
    --- linux-2.6-lttng.orig/include/linux/rcupdate.h 2008-10-08 10:27:57.000000000 -0400
    +++ linux-2.6-lttng/include/linux/rcupdate.h 2008-10-08 10:40:48.000000000 -0400
    @@ -142,6 +142,7 @@ struct rcu_head {
    * on the write-side to insure proper synchronization.
    */
    #define rcu_read_lock_sched() preempt_disable()
    +#define rcu_read_lock_sched_notrace() preempt_disable_notrace()

    /*
    * rcu_read_unlock_sched - marks the end of a RCU-classic critical section
    @@ -149,6 +150,7 @@ struct rcu_head {
    * See rcu_read_lock_sched for more information.
    */
    #define rcu_read_unlock_sched() preempt_enable()
    +#define rcu_read_unlock_sched_notrace() preempt_enable_notrace()



    --
    Mathieu Desnoyers
    OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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