Received: by 2002:a05:6a10:1d13:0:0:0:0 with SMTP id pp19csp767713pxb; Wed, 25 Aug 2021 14:48:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwbHYZtw8atWMIFCrJCKbnJwaRmkjzeyYyj3MYpCu1JrNdQrJfcqdY4cwoGZJjAJprmmQCk X-Received: by 2002:a5e:c903:: with SMTP id z3mr467441iol.61.1629928127734; Wed, 25 Aug 2021 14:48:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1629928127; cv=none; d=google.com; s=arc-20160816; b=GdYajCT3vy2hUztCmU2NXwwr9zwgKLeVoYv5EABk6AQiHFoC6XBLU9etPZEdEU844/ JKzKkKJcK9US3221TLkMlu+dbkOqMNZKXWG0D7eQScHoEt53/B9FbNDPLCZElK55ySij cejT0XejeQFIZbcICl3x7IRyAqytgSC1HS6Yz1bzf78bDVEfccXB6Fw+AyFayznjmrN8 JJgDZ8Lj5x5IlbtI63TXyBCiyFozL6VZEkkAtstT7xjsJXVVqBGxwkYPFHnjDKMYepy/ DygkhhE0BxJpgRrKl7rF6LWW1o7nhXilgG6Ip14kpzSXO8DX3qaMEkJ5EaQhixb9nqX0 CttA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=3LvmWfwx5JQQj4LApcFece1d63BWf3H1IZ7LaA2VzKA=; b=yB/XZ+EN5iKE2EmMDeafYp4IsDeNNQwduBIneCsiza9bJxCBmcYZzPNdLs4nITIbF7 hdv9DmsAXvY5iwhdgLUr5jVDqY7CZpcC0a35tW1TqhPEpg88LonH2yx3FJqIThAtf0Cw YBqIVOhHBOWBayxsQc1hRE9M0MNWpiMQuAYm0wpHal8kE6wyGnr/0l2mLD6gPVGbS7+3 sYaozSESwbIrUKMq17phLsJDBgvTr4i/6q1X0p/PBVaxxaUxMpJkvsF03xD/5m4LLjJn B3wokWyYW7KKWRIPh8NtPNRw7AEPJ6p+5kB1VBhG6kPHkEc6yrdZpd9avEk0CVff4b+N 281g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id a21si817651iot.52.2021.08.25.14.48.35; Wed, 25 Aug 2021 14:48:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231920AbhHYVsY (ORCPT + 99 others); Wed, 25 Aug 2021 17:48:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:41042 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229707AbhHYVsW (ORCPT ); Wed, 25 Aug 2021 17:48:22 -0400 Received: from rorschach.local.home (unknown [24.94.146.150]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3430E61038; Wed, 25 Aug 2021 21:47:35 +0000 (UTC) Date: Wed, 25 Aug 2021 17:47:33 -0400 From: Steven Rostedt To: Eric Dumazet Cc: Zhongya Yan , Jakub Kicinski , netdev , LKML , Ingo Molnar , David Miller , Hideaki YOSHIFUJI , David Ahern , hengqi.chen@gmail.com, Yonghong Song Subject: Re: [PATCH] net: tcp_drop adds `reason` parameter for tracing Message-ID: <20210825174733.38a484f8@rorschach.local.home> In-Reply-To: References: <20210824125140.190253-1-yan2228598786@gmail.com> <20210824112957.3a780186@oasis.local.home> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 25 Aug 2021 08:39:40 -0700 Eric Dumazet wrote: > Since these drops are hardly hot path, why not simply use a string ? > An ENUM will not really help grep games. I'm more concerned with ring buffer space than hot paths. The ring buffer is limited in size, and the bigger the events, the less there are. grep games shouldn't be too bad, since it would find the place that maps the names with the enums, and then you just search for the enums. -- Steve