include/linux: printk is needed in filter.h when CONFIG_BPF_JIT is defined
for make V=1 EXTRA_CFLAGS=-W ARCH=arm allmodconfig printk is need when CONFIG_BPF_JIT is defined or it will report pr_err and print_hex_dump are implicit declaration Signed-off-by: NChen Gang <gang.chen@asianux.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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