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2007-11-14Linux Kernel Markers: fix marker mutex not taken upon module loadMathieu Desnoyers1-24/+17
Upon module load, we must take the markers mutex. It implies that the marker mutex must be nested inside the module mutex. It implies changing the nesting order : now the marker mutex nests inside the module mutex. Make the necessary changes to reverse the order in which the mutexes are taken. Includes some cleanup from Dave Hansen <haveblue@us.ibm.com>. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19Linux Kernel MarkersMathieu Desnoyers1-0/+525
The marker activation functions sits in kernel/marker.c. A hash table is used to keep track of the registered probes and armed markers, so the markers within a newly loaded module that should be active can be activated at module load time. marker_query has been removed. marker_get_first, marker_get_next and marker_release should be used as iterators on the markers. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: "Frank Ch. Eigler" <fche@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Mike Mason <mmlnx@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>