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Message-ID: <CAADnVQ+q0vF03cH8w0c50XMZU1yf_0UjZ+ZarQ_RqMQrVpOFPA@mail.gmail.com> Date: Wed, 2 Mar 2022 13:30:28 -0800 From: Alexei Starovoitov <alexei.starovoitov@...il.com> To: Yonghong Song <yhs@...com> Cc: Hao Luo <haoluo@...gle.com>, Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>, KP Singh <kpsingh@...nel.org>, Shakeel Butt <shakeelb@...gle.com>, Joe Burton <jevburton.kernel@...il.com>, Tejun Heo <tj@...nel.org>, joshdon@...gle.com, Stanislav Fomichev <sdf@...gle.com>, bpf <bpf@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH bpf-next v1 4/9] bpf: Introduce sleepable tracepoints On Wed, Mar 2, 2022 at 1:23 PM Yonghong Song <yhs@...com> wrote: > > > > On 2/25/22 3:43 PM, Hao Luo wrote: > > Add a new type of bpf tracepoints: sleepable tracepoints, which allows > > the handler to make calls that may sleep. With sleepable tracepoints, a > > set of syscall helpers (which may sleep) may also be called from > > sleepable tracepoints. > > There are some old discussions on sleepable tracepoints, maybe > worthwhile to take a look. > > https://lore.kernel.org/bpf/20210218222125.46565-5-mjeanson@efficios.com/T/ Right. It's very much related, but obsolete too. We don't need any of that for sleeptable _raw_ tps. I prefer to stay with "sleepable" name as well to match the rest of the bpf sleepable code. In all cases it's faultable.
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