From patchwork Fri May 3 09:11:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzvetomir Stoyanov X-Patchwork-Id: 10928099 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 52AB71395 for ; Fri, 3 May 2019 09:11:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 44DE92849D for ; Fri, 3 May 2019 09:11:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 392C1284AF; Fri, 3 May 2019 09:11:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C570F284B9 for ; Fri, 3 May 2019 09:11:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727073AbfECJLk (ORCPT ); Fri, 3 May 2019 05:11:40 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:43715 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726950AbfECJLk (ORCPT ); Fri, 3 May 2019 05:11:40 -0400 Received: by mail-wr1-f65.google.com with SMTP id a12so6865400wrq.10 for ; Fri, 03 May 2019 02:11:39 -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=lOsh7yjFkyid7emQ5kYbF8wd4NSvXwJPDsEaULG/B+Q=; b=coquupqhr3fvOI7q8YTeVK2XZrPIl7h9YsEtWvNDFjOOzJ2RML/1UhpfPfAMn6Ebo0 Iw501YubLpPUnKWbl+ZAEb/3jcvRIPcZ1u6R+OzGg9PmEXIao23x+Y5w0YP09bFzvN+6 mXStxE2EEibxxF58qA6lf95nHSRjumpgEwjSydboEnnyUBOoBTYfxscdUOXG4nOeNcMY yLzZaRfZkmTXwfyrJ3HHt2evXsdfP6T7fdK5OVPv7LSLwTu0fY+MTqOCa4GHtF2dTyFU IJm5u7RMO+kUKZZXyZSODSEd2QXZvkksqUQE8jTepQ4IgdVvCtqOPqeptQRnIQvXhYG2 XZ9g== X-Gm-Message-State: APjAAAW2ZKSfB7FRoUYH+Zlg7kBQq8vVJ/gFEiyMq84aV1AbIn6QTYcl np4RE61POtZINgCLZFQsBP4= X-Google-Smtp-Source: APXvYqzQJrSRN5cjl5G9TARNB6OHrMouRXTUBFiriLzI1YFtSg6C4V9t8JgAV9sCQ+T9X27p6ugWoQ== X-Received: by 2002:a5d:4942:: with SMTP id r2mr5850639wrs.159.1556874698739; Fri, 03 May 2019 02:11:38 -0700 (PDT) Received: from oberon.eng.vmware.com ([146.247.46.5]) by smtp.gmail.com with ESMTPSA id b11sm2398596wmh.29.2019.05.03.02.11.37 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 03 May 2019 02:11:38 -0700 (PDT) From: Tzvetomir Stoyanov To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v6 21/26] tools/lib/traceevent: Man pages for event fields APIs Date: Fri, 3 May 2019 12:11:14 +0300 Message-Id: <20190503091119.23399-22-tstoyanov@vmware.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190503091119.23399-1-tstoyanov@vmware.com> References: <20190503091119.23399-1-tstoyanov@vmware.com> MIME-Version: 1.0 Sender: linux-trace-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Create man pages for libtraceevent APIs: tep_event_common_fields(), tep_event_fields() Signed-off-by: Tzvetomir Stoyanov --- .../Documentation/libtraceevent-fields.txt | 105 ++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-fields.txt diff --git a/tools/lib/traceevent/Documentation/libtraceevent-fields.txt b/tools/lib/traceevent/Documentation/libtraceevent-fields.txt new file mode 100644 index 000000000000..1ccb531d5114 --- /dev/null +++ b/tools/lib/traceevent/Documentation/libtraceevent-fields.txt @@ -0,0 +1,105 @@ +libtraceevent(3) +================ + +NAME +---- +tep_event_common_fields, tep_event_fields - Get a list of fields for an event. + +SYNOPSIS +-------- +[verse] +-- +*#include * + +struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_); +struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_); +-- + +DESCRIPTION +----------- +The _tep_event_common_fields()_ function returns an array of pointers to common +fields for the _event_. The array is allocated in the function and must be freed +by free(). The last element of the array is NULL. + +The _tep_event_fields()_ function returns an array of pointers to event specific +fields for the _event_. The array is allocated in the function and must be freed +by free(). The last element of the array is NULL. + +RETURN VALUE +------------ +Both _tep_event_common_fields()_ and _tep_event_fields()_ functions return +an array of pointers to tep_format_field structures in case of success, or +NULL in case of an error. + +EXAMPLE +------- +[source,c] +-- +#include +... +struct tep_handle *tep = tep_alloc(); +... +int i; +struct tep_format_field **fields; +struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit"); +if (event != NULL) { + fields = tep_event_common_fields(event); + if (fields != NULL) { + i = 0; + while (fields[i]) { + /* + walk through the list of the common fields + of the kvm_exit event + */ + i++; + } + free(fields); + } + fields = tep_event_fields(event); + if (fields != NULL) { + i = 0; + while (fields[i]) { + /* + walk through the list of the event specific + fields of the kvm_exit event + */ + i++; + } + free(fields); + } +} +... +-- + +FILES +----- +[verse] +-- +*event-parse.h* + Header file to include in order to have access to the library APIs. +*-ltraceevent* + Linker switch to add when building a program that uses the library. +-- + +SEE ALSO +-------- +_libtraceevent(3)_, _trace-cmd(1)_ + +AUTHOR +------ +[verse] +-- +*Steven Rostedt* , author of *libtraceevent*. +*Tzvetomir Stoyanov* , author of this man page. +-- +REPORTING BUGS +-------------- +Report bugs to + +LICENSE +------- +libtraceevent is Free Software licensed under the GNU LGPL 2.1 + +RESOURCES +--------- +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git