doc: explain how to use perf with skb programs (#2289)
doc: explain how to use perf with skb programs (#2289)

explain how to use perf with skb programs

Signed-off-by: Oriol Arcas <a98c9d4e37de3d71db2e1a293b51c579a914c4ae@starflownetworks.com>
brendangregg/bcc,iovisor/bcc,tuxology/bcc,iovisor/bcc,tuxology/bcc,tuxology/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,tuxology/bcc,brendangregg/bcc,tuxology/bcc,iovisor/bcc,brendangregg/bcc,iovisor/bcc