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: 12671703 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F0AEC433F5 for ; Sat, 11 Dec 2021 06:41:19 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DDB686B0074; Sat, 11 Dec 2021 01:40:15 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id D8A7A6B0075; Sat, 11 Dec 2021 01:40:15 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C52FF6B0078; Sat, 11 Dec 2021 01:40:15 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0181.hostedemail.com [216.40.44.181]) by kanga.kvack.org (Postfix) with ESMTP id B79E66B0074 for ; Sat, 11 Dec 2021 01:40:15 -0500 (EST) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 7F227853F1 for ; Sat, 11 Dec 2021 06:40:05 +0000 (UTC) X-FDA: 78904563570.30.498F195 Received: from mail-pj1-f41.google.com (mail-pj1-f41.google.com [209.85.216.41]) by imf08.hostedemail.com (Postfix) with ESMTP id B194516000A for ; Sat, 11 Dec 2021 06:40:03 +0000 (UTC) Received: by mail-pj1-f41.google.com with SMTP id h24so8331766pjq.2 for ; 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=C4yeNym6JgtdWBn/iWpMJmNooreZMD+Y7BpFJwaXPSvo4zEkk+tk9Q5sG7ZNr9m0A/ xMk066WeTzkfoFTSYr2GkTzI8n/nwORcd0BaeeIzu22Nm4Vnfl1GbcfEoo7tiw3xJqZJ bbPzdFCGmv3BnYJkvv9m/l63zVP1cdh9uv5dp8R2nWnhpgwOYcLdo/WAGzmb/Sz7LuQs jdYhzHrzDgU4tlHKo6mvNuLAqzFaMlcq41cj17C5/3jy6jkiAe94rkc2a+bUNt2rw4c8 /tXen0BAKUy+/flQXo7eIQvn4s3j8R7q0oXihBxQAx3hSLcPyp4hesS1oX1KIJLJgw1j r1Tg== X-Gm-Message-State: AOAM533VpRoAiCSZFag4G/NBAcFXsnDv2rTq82qQY4W6AV27zbdoZArR l2dAkzmWhb3QowiHIs+6VY8= 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 X-Stat-Signature: sx9tsnw75ja3s3gjjuau7t4k849xbfkq Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=VIOouOyV; spf=pass (imf08.hostedemail.com: domain of laoar.shao@gmail.com designates 209.85.216.41 as permitted sender) smtp.mailfrom=laoar.shao@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: B194516000A X-HE-Tag: 1639204803-442078 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 {