From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f193.google.com (mail-yb1-f193.google.com [209.85.219.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 534645FEE6 for ; Tue, 15 Jul 2025 02:45:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.193 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752547543; cv=none; b=OuNaYLuc0dKHenx+RhvfBR2oELvjSBuHuWwCmCwvjshTAnyPYsjkRzGXT3/aIEu5HVA43gB6FbSV6YQNYJq0rjdT895+Yja7tL1uEJ9s5LY3q5yGaydKNnfXPcs/nHLOMDDddyi/oVxFIL+jrSZA1nrh/ojXvxLYlDlSkms2TUg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752547543; c=relaxed/simple; bh=JiAajW+z3ZYPT+V1dNcNylkpH9j+9GG1zaSk3WE9mmE=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=H79LyizDSq5ceXClXxtgKwUQHccHruaXDstuZxuaCBWxWmUTj6XAFqxe/s9HWN2ra2XAYDB5l3AwZPQvYiu9F8xkPDfE6fBTzFfsA10jMr6wly6ZkY3/61UqNbzFl9OnUklaws3NeNqiUIIJvhZErWD+znmhHOpQew8BFdRUABg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=iGNL57u9; arc=none smtp.client-ip=209.85.219.193 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iGNL57u9" Received: by mail-yb1-f193.google.com with SMTP id 3f1490d57ef6-e812c817de0so3998558276.0 for ; Mon, 14 Jul 2025 19:45:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1752547541; x=1753152341; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=JiAajW+z3ZYPT+V1dNcNylkpH9j+9GG1zaSk3WE9mmE=; b=iGNL57u9zX2AOUzCqejizvSp0J5GG/gUExoAGvj2vVwkM75CxPQCFs/FjCIO1az22a WWZy956Ayl2aanXkhjfikHQQ/NavE54+PjFWOXdR2rPXkRGD78oxj/YvyV3zpzbit862 bVj7meVjvnFWdvzR1BRAwvaE4+DCR4cs2+JDLRGFpXf5jdsM+TcjdFqb2SiH0F6nY0kT pEEm/v0Fhy15rrOb8hLUQT7BRqOhdKeV49wpylS/G6PhxA0+7+WjaAIbdGBx9kyS199y 5GLXuYXDWXPfvybHksgZiF12voxSdBiyXXXOtJK4Ex0yS8jnzFW1Lpb1H0z76TYNMT9v 65wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752547541; x=1753152341; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JiAajW+z3ZYPT+V1dNcNylkpH9j+9GG1zaSk3WE9mmE=; b=Xzr3Zph+QbeQMpv31P4tn9kDWGoPp7GCsTXyCbmcCVrBOKBpvjN/iiFsc6Swhqcoa6 dD/NR9takRO23M8LAXYZWXk4yA+Li3keN89AhM3CFn6J/8bhEpNi7vbf1cdfe8j4bVtL aSbFNK/o0X0t3te7wP/mmELvCsuJQo67yK0NxQbR9UW0IscgLxFmwRVknuFOqo30rOf6 sNDstasWtiGQrmWO6eWlbbOija6kGgKuWWsSZvDlBEAQP70+igYhwlSdi1/w1DzdD/c6 7cJxBRJm87DO+gprGnGkh1nxGc2ju/0HGjg7Ky2UDSz27tRe0bSkv3srNfQfZam4h9vC U58Q== X-Forwarded-Encrypted: i=1; AJvYcCX7kyoRxAODaWOw0C/ycMdxOwzxIV3XijFEismJk5plA24h5YmVegpYiA0bNQLp+jm0u0s=@vger.kernel.org X-Gm-Message-State: AOJu0YwU84PZ1LobthFQ19M2gwz9/rczGtv9C8kkiswx5rd+dZNIOVj+ 0aEPvLT4BfDmgbxVTA5KDD8yTU0dVQ+n0e4d/MMsZMN/lPgSFspNKFV33BFrYWHnwgyO06YeHyQ KyyPJfMoMo9psnDzsPyzEcOw0+QoCnFU= X-Gm-Gg: ASbGncuT/LEQmrmE+8J5CqPAE3wSEbljpDGnwZdPxnj3/Aa/5GEBmaop5iVFi+rVA54 w+BKbD+B0mqqRCnNaafCbx6eS5Gb8aeAkYtuGTkEsfXP+lm+sXr+MNY0syejWfeYK4AYmNbqRn0 biCvqFmlXRAzxomQf5J7RLYWygq1Tv6WA8Qa0sa3WZnmV71dqTiHpe5mwGuC9vvrVwftMykDXlc 9MjiXQ= X-Google-Smtp-Source: AGHT+IHuW7nGq7cqoUnY29Eio/zyknzXGJTqYA6cwjKOUNk6cfbbaHpsJf6xsFZagArpL3Nk49tQmmi40QJBh9E3kC4= X-Received: by 2002:a05:690c:6d0d:b0:70d:f47a:7e40 with SMTP id 00721157ae682-717d790e42emr248594427b3.16.1752547541228; Mon, 14 Jul 2025 19:45:41 -0700 (PDT) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250703121521.1874196-1-dongml2@chinatelecom.cn> In-Reply-To: From: Menglong Dong Date: Tue, 15 Jul 2025 10:44:36 +0800 X-Gm-Features: Ac12FXx0SoFjpVbaO2l9hdo442HwGevatGbFL0uJPzhT7XbiCLVxdBXFQN-ud60 Message-ID: Subject: Re: [PATCH bpf-next v2 00/18] bpf: tracing multi-link support To: Alexei Starovoitov Cc: Steven Rostedt , Jiri Olsa , bpf , Menglong Dong Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Jul 15, 2025 at 10:32=E2=80=AFAM Alexei Starovoitov wrote: > > On Thu, Jul 3, 2025 at 5:17=E2=80=AFAM Menglong Dong wrote: > > > > Besides the performance, we also need to make the global trampoline > > collaborate with bpf trampoline. For now, FENTRY_MULTI will be attached > > to the target who already have FENTRY on it, and -EEXIST will be return= ed. > > So we need another series to make them work together. > > This needs to be thought through from the beginning. > Without it the feature is way too limiting. > People have fentry attached 24/7. It's not merely tracing use case. > fentry-multi has to be able to co-exist. V1 contained this part. To make the series simple, I splitted it out to ano= ther series. Should I put it back in this series? There are already 18 patches in this series, and there are about 5 patches for that part :/