463bcb6c7f
Support call same level initcall async in kthread. Introduce kernel parameter "initcall_nr_threads" control how many threads. initcall_nr_threads default is 0, which disable intcall async. initcall_nr_threads=-1, auto selected the number of threads. Save boot time about 29ms on rk3126-bnd-d708 board. Change-Id: I04663d22500bc1d65ca5841fb08e4b57083d6b5e Signed-off-by: Tao Huang <huangtao@rock-chips.com>