From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63A15C2FC1A for ; Thu, 17 Aug 2023 08:59:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349173AbjHQI6b (ORCPT ); Thu, 17 Aug 2023 04:58:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349213AbjHQI6K (ORCPT ); Thu, 17 Aug 2023 04:58:10 -0400 Received: from mail-pl1-x62b.google.com (mail-pl1-x62b.google.com [IPv6:2607:f8b0:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26E31E7C for ; Thu, 17 Aug 2023 01:58:09 -0700 (PDT) Received: by mail-pl1-x62b.google.com with SMTP id d9443c01a7336-1bdf4752c3cso22618345ad.2 for ; Thu, 17 Aug 2023 01:58:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1692262688; x=1692867488; 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=crlYGKquqF5t5yJzuYzOspJUZ1j4poI8LPHia0IINUw=; b=DksOOuTp1UVrleiR8CEK0iz/auSb6d/LPavN/30BDmNJ0cdz7LS99xeIxjET/PJ41X h81Ebion1q7krwAQiA51IC+KPYAqix6+FMf3GyFu87M3wpXcLnJ/nLO4LuaIACrnECZC CQtdKis22ego1txUw9OgYHzv9B7tY+JdrfxRM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692262688; x=1692867488; 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=crlYGKquqF5t5yJzuYzOspJUZ1j4poI8LPHia0IINUw=; b=QQVb8nCl3VRxKBzdCyHOizLEAP+q46FFAVLue/uV8DLTNBrr+36fpQJqimHMFn7G+f vAsXhjXBowunBDYdGIZqH7yYPVZKJAYjijb+5P7W+LlWPCUqM+AqPPTOfVf5W5zEahbb e4jssrncaNFxyEJOG/4H7DC4+mtlkZigmieCG5bxjfmfitCzAMqwvR9Jhw0gZhf9E/RB wFTwyVGf7Lpy/CA9r6C1ebiRoK35QCk+9lOq5n8MagcXtvU0h5g/GXaUo4+u7umQd3AX LWrgp3Bo37KyUn8dRFbrIkFBPi+H54V5RwVPgOvdGIdSXifzE8jiUXU6AFire1O/suzC 7A7A== X-Gm-Message-State: AOJu0Yz7LiZNQnewtLOhoh+YHp8V8K2c2t7GrUB02P1dw+PFJToVsEA0 XMV57Lsvto12VFe6/NvqO3Wo+4RfcbMEknTFOFWEJQ== X-Google-Smtp-Source: AGHT+IHPdZNMxsM5+V5vX1EyN/E9ZUkGEZfEzPzHjovvpTHCp44OCZVb5aKpzX0DMTkIEr47E1RrBt56OImd/BKdS3c= X-Received: by 2002:a17:90b:4391:b0:268:c7fc:b771 with SMTP id in17-20020a17090b439100b00268c7fcb771mr3404103pjb.14.1692262688334; Thu, 17 Aug 2023 01:58:08 -0700 (PDT) MIME-Version: 1.0 References: <169181859570.505132.10136520092011157898.stgit@devnote2> <169181867839.505132.10717747708330472036.stgit@devnote2> In-Reply-To: <169181867839.505132.10717747708330472036.stgit@devnote2> From: Florent Revest Date: Thu, 17 Aug 2023 10:57:57 +0200 Message-ID: Subject: Re: [PATCH v3 7/8] bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled To: "Masami Hiramatsu (Google)" Cc: Alexei Starovoitov , Steven Rostedt , linux-trace-kernel@vger.kernel.org, LKML , Martin KaFai Lau , bpf , Sven Schnelle , Alexei Starovoitov , Jiri Olsa , Arnaldo Carvalho de Melo , Daniel Borkmann , Alan Maguire , Mark Rutland , Peter Zijlstra , Thomas Gleixner Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org On Sat, Aug 12, 2023 at 7:38=E2=80=AFAM Masami Hiramatsu (Google) wrote: > > From: Masami Hiramatsu (Google) > > Enable kprobe_multi feature if CONFIG_FPROBE is enabled. The pt_regs is > converted from ftrace_regs by ftrace_partial_regs(), thus some registers > may always returns 0. But it should be enough for function entry (access > arguments) and exit (access return value). > > Signed-off-by: Masami Hiramatsu (Google) Acked-by: Florent Revest