dcsnoop: use PERF_EVENT_OUTPUT
dcsnoop: use PERF_EVENT_OUTPUT

mkacik/bcc,romain-intel/bcc,mcaleavya/bcc,iovisor/bcc,mcaleavya/bcc,tuxology/bcc,tuxology/bcc,brendangregg/bcc,tuxology/bcc,mkacik/bcc,romain-intel/bcc,mkacik/bcc,iovisor/bcc,shodoco/bcc,mcaleavya/bcc,shodoco/bcc,brendangregg/bcc,iovisor/bcc,mcaleavya/bcc,shodoco/bcc,romain-intel/bcc,brendangregg/bcc,romain-intel/bcc,mkacik/bcc,tuxology/bcc,iovisor/bcc,brendangregg/bcc,shodoco/bcc,brendangregg/bcc,romain-intel/bcc,shodoco/bcc,tuxology/bcc,mkacik/bcc,mcaleavya/bcc,iovisor/bcc