Create marker_synchronize_unregister() which must be called before the end of exit() to make sure every probe callers have exited the non preemptible section and thus are not executing the probe code anymore. Signed-off-by: Mathieu Desnoyers CC: Ingo Molnar CC: Rusty Russell CC: akpm@linux-foundation.org CC: "Frank Ch. Eigler" --- include/linux/marker.h | 7 +++++++ 1 file changed, 7 insertions(+) Index: linux-2.6-lttng/include/linux/marker.h =================================================================== --- linux-2.6-lttng.orig/include/linux/marker.h 2008-07-31 09:12:52.000000000 -0400 +++ linux-2.6-lttng/include/linux/marker.h 2008-07-31 09:19:31.000000000 -0400 @@ -142,4 +142,11 @@ extern int marker_probe_unregister_priva extern void *marker_get_private_data(const char *name, marker_probe_func *probe, int num); +/* + * marker_synchronize_unregister must be called between the last marker probe + * unregistration and the end of module exit to make sure there is no caller + * executing a probe when it is freed. + */ +#define marker_synchronize_unregister() synchronize_sched() + #endif -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/