r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./cgroup.cpu/cgroup.procs\x00', 0x2, 0x0)
pwritev2(r0, &(0x7f0000000280)=[{&(0x7f0000000000)='%', 0x1}], 0x1, 0x0, 0x0, 0xa)