From: Kui-Feng Lee <kuifeng@fb.com>
To: "andrii.nakryiko@gmail.com" <andrii.nakryiko@gmail.com>
Cc: "daniel@iogearbox.net" <daniel@iogearbox.net>,
"ast@kernel.org" <ast@kernel.org>,
"andrii@kernel.org" <andrii@kernel.org>,
"bpf@vger.kernel.org" <bpf@vger.kernel.org>
Subject: Re: [PATCH bpf-next v2 2/4] bpf, x86: Create bpf_trace_run_ctx on the caller thread's stack
Date: Tue, 22 Mar 2022 15:30:35 +0000 [thread overview]
Message-ID: <47c30c3f2f1a149e343252c6a84f219b552bba4f.camel@fb.com> (raw)
In-Reply-To: <CAEf4Bzbtcyj-ciXzJVL3QV6mbbyA_6Nec8m_8rgz190dcxH4Yg@mail.gmail.com>
On Mon, 2022-03-21 at 16:08 -0700, Andrii Nakryiko wrote:
> On Tue, Mar 15, 2022 at 5:44 PM Kui-Feng Lee <kuifeng@fb.com> wrote:
> >
> > @@ -1291,6 +1294,7 @@ struct bpf_cg_run_ctx {
> > struct bpf_trace_run_ctx {
> > struct bpf_run_ctx run_ctx;
> > u64 bpf_cookie;
> > + struct bpf_run_ctx *saved_run_ctx;
> > };
>
> oh, and bpf_trace_run_ctx is used for kprobe/uprobe/tracepoint, let's
> add a new struct bpf_tramp_run_ctx which would reflect that it is
> used
> for BPF trampoline-based BPF programs. Otherwise it's confusing to
> have saved_run_ctx for kprobe where we don't use that. Similarly, if
> we move "start" timestamp, it will be a bit off. Not end of the
> world,
> but I think keeping them separate would make sense over long run.
Ok!
next prev parent reply other threads:[~2022-03-22 15:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-16 0:42 [PATCH bpf-next v2 0/4] Attach a cookie to a tracing program Kui-Feng Lee
2022-03-16 0:42 ` [PATCH bpf-next v2 1/4] bpf, x86: Generate trampolines from bpf_links Kui-Feng Lee
2022-03-16 0:42 ` [PATCH bpf-next v2 2/4] bpf, x86: Create bpf_trace_run_ctx on the caller thread's stack Kui-Feng Lee
2022-03-18 19:09 ` Alexei Starovoitov
2022-03-20 9:31 ` Kui-Feng Lee
2022-03-20 20:08 ` Alexei Starovoitov
2022-03-21 19:00 ` Kui-Feng Lee
2022-03-21 23:04 ` Andrii Nakryiko
2022-03-21 23:25 ` Alexei Starovoitov
2022-03-21 23:38 ` Andrii Nakryiko
2022-03-21 23:08 ` Andrii Nakryiko
2022-03-22 15:30 ` Kui-Feng Lee [this message]
2022-03-22 21:08 ` Andrii Nakryiko
2022-03-16 0:42 ` [PATCH bpf-next v2 3/4] bpf, x86: Support BPF cookie for fentry/fexit/fmod_ret Kui-Feng Lee
2022-03-18 19:13 ` Alexei Starovoitov
2022-03-21 23:24 ` Andrii Nakryiko
2022-03-21 23:37 ` Andrii Nakryiko
2022-04-12 16:50 ` Kui-Feng Lee
2022-03-22 1:15 ` Alexei Starovoitov
2022-03-22 4:32 ` Andrii Nakryiko
2022-04-06 5:35 ` Kui-Feng Lee
2022-04-06 17:00 ` Andrii Nakryiko
2022-03-21 23:18 ` Andrii Nakryiko
2022-03-22 16:08 ` Kui-Feng Lee
2022-03-22 21:06 ` Andrii Nakryiko
2022-04-06 22:44 ` Kui-Feng Lee
2022-03-16 0:42 ` [PATCH bpf-next v2 4/4] selftest/bpf: The test cses of " Kui-Feng Lee
2022-03-18 19:21 ` Alexei Starovoitov
2022-03-20 8:43 ` Kui-Feng Lee
2022-03-21 23:29 ` Andrii Nakryiko
2022-03-21 23:36 ` Andrii Nakryiko
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