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    Subject[patch 1/4] Markers - depends on not PREEMPT_RCU
    Markers do not mix well with CONFIG_PREEMPT_RCU because it uses
    preempt_disable/enable() and not rcu_read_lock/unlock for minimal
    intrusiveness. We would need call_sched and sched_barrier primitives.

    This should be in for 2.6.25.

    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
    CC: Christoph Hellwig <hch@infradead.org>
    CC: Andrew Morton <akpm@osdl.org>
    CC: Mike Mason <mmlnx@us.ibm.com>
    CC: Dipankar Sarma <dipankar@in.ibm.com>
    CC: David Smith <dsmith@redhat.com>
    CC: "Paul E. McKenney" <paulmck@us.ibm.com>
    CC: Steven Rostedt <rostedt@goodmis.org>
    CC: Adrian Bunk <adrian.bunk@movial.fi>
    ---
    init/Kconfig | 1 +
    1 file changed, 1 insertion(+)

    Index: linux-2.6-lttng/init/Kconfig
    ===================================================================
    --- linux-2.6-lttng.orig/init/Kconfig 2008-03-19 18:26:47.000000000 -0400
    +++ linux-2.6-lttng/init/Kconfig 2008-03-19 18:27:43.000000000 -0400
    @@ -742,6 +742,7 @@ config PROFILING

    config MARKERS
    bool "Activate markers"
    + depends on !PREEMPT_RCU
    help
    Place an empty function call at each marker site. Can be
    dynamically changed for a probe function.
    --
    Mathieu Desnoyers
    Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
    OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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