Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220515203653.4039075-1-jolsa@kernel.org> <20230520094722.5393-1-zegao@tencent.com>
 <b4f66729-90ab-080a-51ec-bf435ad6199d@meta.com> <CAD8CoPAXse1GKAb15O5tZJwBqMt1N_btH+qRe7c_a-ryUMjx7A@mail.gmail.com>
 <ZGp+fW855gmWuh9W@krava>
In-Reply-To: <ZGp+fW855gmWuh9W@krava>
From:   Ze Gao <zegao2021@gmail.com>
Date:   Mon, 22 May 2023 10:07:42 +0800
Message-ID: <CAD8CoPDASe7hpkFbK+UzJats7j4sbgsCh_P4zaQYVuKD7jWu2w@mail.gmail.com>
Subject: Re:
To:     Jiri Olsa <olsajiri@gmail.com>
Cc:     Yonghong Song <yhs@meta.com>, Alexei Starovoitov <ast@kernel.org>,
        Andrii Nakryiko <andrii@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Hao Luo <haoluo@google.com>,
        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>,
        Martin KaFai Lau <martin.lau@linux.dev>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Song Liu <song@kernel.org>,
        Stanislav Fomichev <sdf@google.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Yonghong Song <yhs@fb.com>, bpf@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
        kafai@fb.com, kpsingh@chromium.org, netdev@vger.kernel.org,
        paulmck@kernel.org, songliubraving@fb.com,
        Ze Gao <zegao@tencent.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

Oops, I missed that. Thanks for pointing that out, which I thought is
conditional use of rcu_is_watching before.

One last point, I think we should double check on this
     "fentry does not filter with !rcu_is_watching"
as quoted from Yonghong and argue whether it needs
the same check for fentry as well.

Regards,
Ze