optimize code, remove unnecessary filter check
optimize code, remove unnecessary filter check

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