I see.
before:
[ 24.407814] cma: cma_alloc(cma (____ptrval____), name: reserved, count 1, align 0)
[ 24.413397] cma: cma_alloc(cma (____ptrval____), name: reserved, count 1, align 0)
[ 24.415886] cma: cma_alloc(cma (____ptrval____), name: reserved, count 1, align 0)
after:
[ 24.097989] cma: cma_alloc(cma (____ptrval____), name: reserved, total count 16384, used count: 64, request count 1, align 0)
[ 24.104260] cma: cma_alloc(cma (____ptrval____), name: reserved, total count 16384, used count: 65, request count 1, align 0)
[ 24.107504] cma: cma_alloc(cma (____ptrval____), name: reserved, total count 16384, used count: 66, request count 1, align 0)