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authorSteven Rostedt <srostedt@redhat.com>2011-11-02 16:46:46 -0400
committerSteven Rostedt <rostedt@goodmis.org>2011-11-04 21:25:36 -0400
commit49aa29513ec995f201664cf6eee36e5326ed38bf (patch)
tree261edda11ab8893c6b565561bb1c69cc714fca6c /Documentation/trace
parented0449af5373abd766c79fbf83254bebc996bd23 (diff)
downloadlwn-49aa29513ec995f201664cf6eee36e5326ed38bf.tar.gz
lwn-49aa29513ec995f201664cf6eee36e5326ed38bf.zip
tracing: Add boiler plate for subsystem filter
The system filter can be used to set multiple event filters that exist within the system. But currently it displays the last filter written that does not necessarily correspond to the filters within the system. The system filter itself is not used to filter any events. The system filter is just a means to set filters of the events within it. Because this causes an ambiguous state when the system filter reads a filter string but the events within the system have different strings it is best to just show a boiler plate: ### global filter ### # Use this to set filters for multiple events. # Only events with the given fields will be affected. # If no events are modified, an error message will be displayed here. If an error occurs while writing to the system filter, the system filter will replace the boiler plate with the error message as it currently does. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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