On Wed, 18 Apr 2018 17:30:59 +0200 Sebastiano Miano <sebastiano.mi...@polito.it> wrote:
> This patch adds a sample program, called trace_map_events, > that shows how to capture map events and filter them based on > the map id. > > The program accepts a list of map IDs, via the -i command line > option, and filters all the map events related to those IDs (i.e., > map_create/update/lookup/next_key). > If no IDs are specified, all map events are listed and no filtering > is performed. > > Sample usage: > > # trace_map_events -i <map_id1> -i <map_id2> -i <map_id3> ... > > Signed-off-by: Sebastiano Miano <sebastiano.mi...@polito.it> Acked-by: Jesper Dangaard Brouer <bro...@redhat.com> I have tested it works: $ sudo ./trace_map_events -i 2 Init bpf_perf_event for cpu:0 Init bpf_perf_event for cpu:1 Init bpf_perf_event for cpu:2 Init bpf_perf_event for cpu:3 Init bpf_perf_event for cpu:4 Init bpf_perf_event for cpu:5 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... LOOKUP event for map id: 2 and type: 6 Waiting for map events... -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
