linux-kernel - Re: [PATCH v2 net-next 1/3] perf, bpf: Add BPF support to all perf

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Message-ID: <31768751-b471-c80b-a22e-aa385508940d@fb.com>
Date:   Thu, 1 Jun 2017 08:21:22 -0700
From:   Alexei Starovoitov <ast@...com>
To:     Peter Zijlstra <peterz@...radead.org>
CC:     "David S . Miller" <davem@...emloft.net>,
        Brendan Gregg <bgregg@...flix.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Teng Qin <qinteng@...com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 net-next 1/3] perf, bpf: Add BPF support to all
 perf_event types

On 6/1/17 6:32 AM, Peter Zijlstra wrote:
> OK, do that. Something like the below should do I suppose.
>
> It will return -EOPNOTSUPP for permanent failure (it cannot ever work)
> and -EINVAL for temporary failure (could work if you call it on another
> task/cpu).

Thanks! Will test it and report back.