add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/samples/bpf/lwt_len_hist_kern.c
..
..
@@ -14,7 +14,7 @@
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 #include <uapi/linux/if_ether.h>
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 #include <uapi/linux/ip.h>
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 #include <uapi/linux/in.h>
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-#include "bpf_helpers.h"
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+#include <bpf/bpf_helpers.h>
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 # define printk(fmt, ...)						\
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 		({							\