From patchwork Sat Dec 11 06:39:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yafang Shao X-Patchwork-Id: 12671689 X-Patchwork-Delegate: kuba@kernel.org 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 120B8C4332F for ; Sat, 11 Dec 2021 06:40:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229577AbhLKGkI (ORCPT ); Sat, 11 Dec 2021 01:40:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229527AbhLKGkF (ORCPT ); Sat, 11 Dec 2021 01:40:05 -0500 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7EA1C061714; Fri, 10 Dec 2021 22:40:04 -0800 (PST) Received: by mail-pj1-x1030.google.com with SMTP id v23so8298700pjr.5; Fri, 10 Dec 2021 22:40:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/I2CQOSPxPl3e4Yr2uDBAw9mvwLM+fXKuKYxA0ZrAYc=; b=VIOouOyVNGP8AMS7vH25R7ezTHIuVaLkOsH1g8p5QlmHTgcBJDKschh6e69WqeS5lg 1A+26/jKzb+DENoLnSfK/GkVY1ny5DfT8VcQfNhTXBj4n4Cx+tkzLOViWV04Zl2FZ+gY i56ke3Yog79crQ2m03IiInSJjf2DqTjTz/HO5dOHu33LzJmYCpsT02C2SeZRj5TBaQVQ y9aV+JJA33lbAA/0CqRqIdEnKMNrPSWeav3knE0MLSq6ln2gbFu7jRxL149TNAmm4X7Y ELabuPWamLYFojIGKpiAYr0Ef/CKj3V2RsEs/lJplEihtkM9YuMLB1w23mGqB7ZjcIfl SEKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/I2CQOSPxPl3e4Yr2uDBAw9mvwLM+fXKuKYxA0ZrAYc=; b=DtYsJeUeLLueZxJAZlA9mpxvszZP9+UajFhmCcTYAh4pLfhjPF5GDPpErkzNNkhFoW GMdfEkp5A3y/iasOa7LYkERKOOSgIkkKd7bTBjXk1MTvVnwiK/8zrsOcA9gD6Ob9LHa2 C99GyAxCzAkbek0MTHD6e0iAlR9kPuKR+iSpeoiY+AVAlduncjbT1eqqwb7zlIASreY7 jt4SOnJSN6MGbHb2SfDVbUcGLG8AIQH3/oesKP6J3MAYvmABC/4TzDdq9O0WlWM2lCcr A1QqNHFHnvpL/xm6eDrZt1C/8/k3E90q4zuooytxleHEkFJfKX9AkTQYSbwFjip7XVgv 1KxA== X-Gm-Message-State: AOAM5336zj7vVoEjQ2M0S1MXF5xElVE304eorVSw7yGdN22D3GM+zm5w PyrvMEOmqqwxtzDb4iqtoX8= X-Google-Smtp-Source: ABdhPJwawVgqpJxNH0/hvqcqPlFrrhcBZidD0MqAaYCGD9tZ+aPQrl2q+kL/z2lm1d9TKwQ7RMOMaQ== X-Received: by 2002:a17:903:11c4:b0:141:da55:6158 with SMTP id q4-20020a17090311c400b00141da556158mr81495925plh.7.1639204804265; Fri, 10 Dec 2021 22:40:04 -0800 (PST) Received: from vultr.guest ([45.76.74.237]) by smtp.gmail.com with ESMTPSA id mr2sm869638pjb.25.2021.12.10.22.40.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Dec 2021 22:40:03 -0800 (PST) From: Yafang Shao To: akpm@linux-foundation.org, rostedt@goodmis.org, keescook@chromium.org, pmladek@suse.com, david@redhat.com, arnaldo.melo@gmail.com, andrii.nakryiko@gmail.com, alexei.starovoitov@gmail.com Cc: linux-mm@kvack.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Yafang Shao , Mathieu Desnoyers , Michal Miroslaw , Peter Zijlstra , Matthew Wilcox , Al Viro Subject: [PATCH -mm v2 2/3] cn_proc: replaced old hard-coded 16 with TASK_COMM_LEN_16 Date: Sat, 11 Dec 2021 06:39:48 +0000 Message-Id: <20211211063949.49533-3-laoar.shao@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211211063949.49533-1-laoar.shao@gmail.com> References: <20211211063949.49533-1-laoar.shao@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This TASK_COMM_LEN_16 has the same meaning with the macro defined in linux/sched.h, but we can't include linux/sched.h in a UAPI header, so we should specifically define it in the cn_proc.h. Signed-off-by: Yafang Shao Acked-by: Steven Rostedt (VMware) Cc: Mathieu Desnoyers Cc: Arnaldo Carvalho de Melo Cc: Alexei Starovoitov Cc: Andrii Nakryiko Cc: Michal Miroslaw Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Matthew Wilcox Cc: David Hildenbrand Cc: Al Viro Cc: Kees Cook Cc: Petr Mladek --- include/uapi/linux/cn_proc.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/cn_proc.h b/include/uapi/linux/cn_proc.h index db210625cee8..6dcccaed383f 100644 --- a/include/uapi/linux/cn_proc.h +++ b/include/uapi/linux/cn_proc.h @@ -21,6 +21,8 @@ #include +#define TASK_COMM_LEN_16 16 + /* * Userspace sends this enum to register with the kernel that it is listening * for events on the connector. @@ -110,7 +112,7 @@ struct proc_event { struct comm_proc_event { __kernel_pid_t process_pid; __kernel_pid_t process_tgid; - char comm[16]; + char comm[TASK_COMM_LEN_16]; } comm; struct coredump_proc_event {