From patchwork Thu Aug 19 06:07:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Venky Shankar X-Patchwork-Id: 500441 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04DBEC4338F for ; Thu, 19 Aug 2021 06:07:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D23056103A for ; Thu, 19 Aug 2021 06:07:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230393AbhHSGHv (ORCPT ); Thu, 19 Aug 2021 02:07:51 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:32076 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229782AbhHSGHt (ORCPT ); Thu, 19 Aug 2021 02:07:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1629353233; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fhcGlGyrC8iczV+ic2cEiLl4/K7tUkqIxxdqyXLf2G0=; b=h+IzeVwlPeQ/3uzP8SpY9w6wlVEZW9s4MkZkP6SfBrsSD4+UON7eG2ZEP9+geKN4GgoKww chc7Yhra0OuMRJhjeF3H4P7j48uQ/D2AEuDkTQ8deFArDwz1R9a3QTmF2Swd2s2q66Dhca XHFNdy4/3g1RtavMRuWuzjo6vXZHIXA= Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-79-1E4rigVQPLCBq2FVWgYLBQ-1; Thu, 19 Aug 2021 02:07:12 -0400 X-MC-Unique: 1E4rigVQPLCBq2FVWgYLBQ-1 Received: by mail-pj1-f71.google.com with SMTP id 2-20020a17090a1742b0290178de0ca331so2210530pjm.1 for ; Wed, 18 Aug 2021 23:07:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=fhcGlGyrC8iczV+ic2cEiLl4/K7tUkqIxxdqyXLf2G0=; b=GVqEYa/ZBCLw2akZYIQKvIeznoEDt3l0p8zRDQpRdYgj8ZWDnAC9IzxoWwr3ERwQPP W/b4seSRAHtszdRtUOpVCtiATbU0AoyKfgLQ78PLD3KLpCZpSCsJk+g0wBPrHzQ/gXFB PPRGO5G5+kuC1VjhokxsBGRqAFlAjw/81y01g1laSMCIor10m+rVJu2ewo7N6nKqBkWQ WegUML78L4H6lRZJDVIRWLawRIrEqD8eAtIAk3ajvIp2gw2OYkQKTo/J/uddTX9n5P89 Zl7h+UTSvOFSv8PFtBgUmSpTqBGkf/Ywp6tuKCq8V3pQqumKqPoBpgFhDjnMX5vP7Ihe vTNw== X-Gm-Message-State: AOAM532qo3ODEYj8cUaHFXLNtTpD4KlI3AuHbVFGYmbC8uivOOneQkQY RD3v+D4+Z2/mQrXgZKHsC22cscQtrlWHPyDPPI947N+a6sOkS0nJeiDGZ4Os3bbCRTF3U7II3MH FT1XXoDTpAXWsPMjvfBSZ7g== X-Received: by 2002:a17:90a:940e:: with SMTP id r14mr13278578pjo.41.1629353231245; Wed, 18 Aug 2021 23:07:11 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxP5wQS/uKaQdKBtaPeVJ/CPAkooiaxJHDqQpTTkOWBVYe3r7+d2lmx41Y0VBOf6u9vNTGusQ== X-Received: by 2002:a17:90a:940e:: with SMTP id r14mr13278565pjo.41.1629353231089; Wed, 18 Aug 2021 23:07:11 -0700 (PDT) Received: from localhost.localdomain ([49.207.198.118]) by smtp.gmail.com with ESMTPSA id o24sm1663100pjs.49.2021.08.18.23.07.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Aug 2021 23:07:10 -0700 (PDT) From: Venky Shankar To: jlayton@redhat.com, pdonnell@redhat.com Cc: ceph-devel@vger.kernel.org, Venky Shankar Subject: [PATCH 1/2] ceph: add helpers to create/cleanup debugfs sub-directories under "ceph" directory Date: Thu, 19 Aug 2021 11:37:00 +0530 Message-Id: <20210819060701.25486-2-vshankar@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210819060701.25486-1-vshankar@redhat.com> References: <20210819060701.25486-1-vshankar@redhat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Callers can use this helper to create a subdirectory under "ceph" directory in debugfs to place custom files for exporting information to userspace. Signed-off-by: Venky Shankar --- include/linux/ceph/debugfs.h | 3 +++ net/ceph/debugfs.c | 27 +++++++++++++++++++++++++-- 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/include/linux/ceph/debugfs.h b/include/linux/ceph/debugfs.h index 8b3a1a7a953a..c372e6cb8aae 100644 --- a/include/linux/ceph/debugfs.h +++ b/include/linux/ceph/debugfs.h @@ -10,5 +10,8 @@ extern void ceph_debugfs_cleanup(void); extern void ceph_debugfs_client_init(struct ceph_client *client); extern void ceph_debugfs_client_cleanup(struct ceph_client *client); +extern struct dentry *ceph_debugfs_create_subdir(const char *subdir); +extern void ceph_debugfs_cleanup_subdir(struct dentry *subdir_dentry); + #endif diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c index 2110439f8a24..cd6f69dd97fa 100644 --- a/net/ceph/debugfs.c +++ b/net/ceph/debugfs.c @@ -404,6 +404,18 @@ void ceph_debugfs_cleanup(void) debugfs_remove(ceph_debugfs_dir); } +struct dentry *ceph_debugfs_create_subdir(const char *subdir) +{ + return debugfs_create_dir(subdir, ceph_debugfs_dir); +} +EXPORT_SYMBOL(ceph_debugfs_create_subdir); + +void ceph_debugfs_cleanup_subdir(struct dentry *subdir_dentry) +{ + debugfs_remove(subdir_dentry); +} +EXPORT_SYMBOL(ceph_debugfs_cleanup_subdir); + void ceph_debugfs_client_init(struct ceph_client *client) { char name[80]; @@ -413,7 +425,7 @@ void ceph_debugfs_client_init(struct ceph_client *client) dout("ceph_debugfs_client_init %p %s\n", client, name); - client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); + client->debugfs_dir = ceph_debugfs_create_subdir(name); client->monc.debugfs_file = debugfs_create_file("monc", 0400, @@ -454,7 +466,7 @@ void ceph_debugfs_client_cleanup(struct ceph_client *client) debugfs_remove(client->debugfs_monmap); debugfs_remove(client->osdc.debugfs_file); debugfs_remove(client->monc.debugfs_file); - debugfs_remove(client->debugfs_dir); + ceph_debugfs_cleanup_subdir(client->debugfs_dir); } #else /* CONFIG_DEBUG_FS */ @@ -475,4 +487,15 @@ void ceph_debugfs_client_cleanup(struct ceph_client *client) { } +struct dentry *ceph_debugfs_create_subdir(const char *subdir) +{ + return NULL; +} +EXPORT_SYMBOL(ceph_debugfs_create_subdir); + +void ceph_debugfs_cleanup_subdir(struct dentry *subdir_dentry) +{ +} +EXPORT_SYMBOL(ceph_debugfs_cleanup_subdir); + #endif /* CONFIG_DEBUG_FS */