MR_CONTIG_RANGE    23 include/trace/events/migrate.h 	EMe(MR_CONTIG_RANGE,	"contig_range")
MR_CONTIG_RANGE  1507 mm/gup.c       				  NULL, 0, MIGRATE_SYNC, MR_CONTIG_RANGE)) {
MR_CONTIG_RANGE  8353 mm/page_alloc.c 				    NULL, 0, cc->mode, MR_CONTIG_RANGE);