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ebpf: migrate bpf_prog's flags to bitfield

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As we need to add further flags to the bpf_prog structure, lets migrate
both bools to a bitfield representation. The size of the base structure
(excluding insns) remains unchanged at 40 bytes.

Add also tags for the kmemchecker, so that it doesn't throw false
positives. Even in case gcc would generate suboptimal code, it's not
being accessed in performance critical paths.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2015-09-30 01:41:50 +02:00 • committed by David S. Miller
parent bd8762bec9
commit a91263d520
11 changed files with 18 additions and 12 deletions
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2
arch/s390/net/bpf_jit_comp.c
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@ -1310,7 +1310,7 @@ void bpf_int_jit_compile(struct bpf_prog *fp)
if (jit.prg_buf) {
set_memory_ro((unsigned long)header, header->pages);
fp->bpf_func = (void *) jit.prg_buf;
fp->jited = true;
fp->jited = 1;
}
free_addrs:
kfree(jit.addrs);