netdev - Re: [patch V3 10/22] bpf: Provide bpf_prog_run_pin_on

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Date:   Mon, 24 Feb 2020 19:14:11 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     David Miller <davem@...emloft.net>, bpf@...r.kernel.org,
        netdev@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Sebastian Sewior <bigeasy@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Clark Williams <williams@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [patch V3 10/22] bpf: Provide bpf_prog_run_pin_on_cpu() helper

Thomas Gleixner <tglx@...utronix.de> writes:
> + * preempt_disable/enable(), i.e. it disables also preemption.
> + */
> +static inline u32 bpf_prog_run_pin_on_cpu(const struct bpf_prog *prog,
> +					  void *ctx)

I'm a moron. Let me resend this one.

> +{
> +	u32 ret;
> +
> +	migrate_disable();
> +	ret = __BPF_PROG_RUN(prog, ctx, bpf_dispatcher_nopfunc);
> +	migrate_enable();
> +	return ret;
> +}
>  
>  #define BPF_SKB_CB_LEN QDISC_CB_PRIV_LEN
>