On Sat, 2014-03-08 at 15:15 -0800, Alexei Starovoitov wrote:
> +/**
> + * sk_run_filter_ext - run an extended filter
> + * @ctx: buffer to run the filter on
> + * @insn: filter to apply
> + *
> + * Decode and execute extended BPF instructions.
> + * @ctx is the data we are operating on.
> + * @filter is the array of filter instructions.
> + */
> +notrace u32 sk_run_filter_ext(void *ctx, const struct sock_filter_ext *insn)
> +{
> + u64 stack[64];
> + u64 regs[16];
> + void *ptr;
> + u64 tmp;
> + int off;
Why is this 'notrace' ?
80 u64 on the stack, that is 640 bytes to run a filter ????
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