netdev - Re: [PATCH v8 bpf-next 6/9] bpf: introduce BPF_RAW

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Message-ID: <20180328153435.5e733957@gandalf.local.home>
Date:   Wed, 28 Mar 2018 15:34:35 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Alexei Starovoitov <ast@...nel.org>
Cc:     <davem@...emloft.net>, <daniel@...earbox.net>,
        <torvalds@...ux-foundation.org>, <peterz@...radead.org>,
        <mathieu.desnoyers@...icios.com>, <netdev@...r.kernel.org>,
        <kernel-team@...com>, <linux-api@...r.kernel.org>
Subject: Re: [PATCH v8 bpf-next 6/9] bpf: introduce BPF_RAW_TRACEPOINT

On Wed, 28 Mar 2018 12:05:37 -0700
Alexei Starovoitov <ast@...nel.org> wrote:

> +++ b/include/linux/tracepoint-defs.h
> @@ -35,4 +35,10 @@ struct tracepoint {
>  	struct tracepoint_func __rcu *funcs;
>  };
>  
> +struct bpf_raw_event_map {
> +	struct tracepoint	*tp;
> +	void			*bpf_func;
> +	u32			num_args;
> +} __aligned(32);
> +

If you prefer v7, I'm fine with that. For cache issues, I can pull out
the funcs from the tracepoint structure like I posted.

Mathieu, your thoughts?

-- Steve