From patchwork Fri Mar 8 13:36:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzvetomir Stoyanov X-Patchwork-Id: 10844789 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 438901390 for ; Fri, 8 Mar 2019 13:37:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 309CB2E40A for ; Fri, 8 Mar 2019 13:37:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 24FBD2E435; Fri, 8 Mar 2019 13:37:17 +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 A65AF2E466 for ; Fri, 8 Mar 2019 13:37:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726709AbfCHNhQ (ORCPT ); Fri, 8 Mar 2019 08:37:16 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:34912 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726703AbfCHNhQ (ORCPT ); Fri, 8 Mar 2019 08:37:16 -0500 Received: by mail-wr1-f67.google.com with SMTP id t18so21413240wrx.2 for ; Fri, 08 Mar 2019 05:37:15 -0800 (PST) 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=TWz/5aF5spJM+gmYokY/ByED7c9k7wibH0kdIAxPq4s=; b=pw6Yn6FlyVj+H0QF12aPzqHVHasYNYZkcGiJNBdy33GjsxS0KS9FMsZhIojGwGZA9t Vd2fFNKO34J7gaGvOIv3alQrSKmZTETv4cX/LCpA97LeQeCOtM4EdXT2ZCN+UX0n60gI x0t0rr46JB4X9r39i/oXRD9rBOzHQb34h/U3ZdNao+dMd+pULi1iZC4WX65xNo/i4/0u I8vlEE0YS84d1IFCN8ntsRsVkhasr0fvpkmnt2REHUw0VBllVZtw87D0VF4io26Ndedi zz22l7uZYh6zMyR0JuBveKE0kNInUmP/Yms5pS08DjWIKl7Ktr6V5CxtODj2UyzVWkbT DW8w== X-Gm-Message-State: APjAAAUlctHf5nzcCF7hW8VwaCpllIdqBnbjV8mfnKiPOCH6NYJm+49M /h3sRWA3yLidNWJG0Iu1VljqjTsw X-Google-Smtp-Source: APXvYqxWYYuKDNSVa6zG0b+vHEmEkLv3e7XMdJ1dgfdZjQWEJ7uDLulpXhIj4QdTNH5K9PtqpRa9qg== X-Received: by 2002:adf:c7c6:: with SMTP id y6mr10820805wrg.217.1552052234558; Fri, 08 Mar 2019 05:37:14 -0800 (PST) Received: from oberon.eng.vmware.com ([146.247.46.5]) by smtp.gmail.com with ESMTPSA id 132sm19625364wmd.27.2019.03.08.05.37.13 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 08 Mar 2019 05:37:13 -0800 (PST) From: Tzvetomir Stoyanov To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v4 18/46] tools/lib/traceevent: Man pages for tep_find_event(), tep_find_event_by_name() and tep_find_event_by_record() Date: Fri, 8 Mar 2019 15:36:26 +0200 Message-Id: <20190308133654.21264-19-tstoyanov@vmware.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190308133654.21264-1-tstoyanov@vmware.com> References: <20190308133654.21264-1-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 tep_find_event(), tep_find_event_by_name() and tep_find_event_by_record() as part of the libtraceevent APIs. Signed-off-by: Tzvetomir Stoyanov --- .../libtraceevent-event_find.txt | 99 +++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-event_find.txt diff --git a/tools/lib/traceevent/Documentation/libtraceevent-event_find.txt b/tools/lib/traceevent/Documentation/libtraceevent-event_find.txt new file mode 100644 index 000000000000..961309f24491 --- /dev/null +++ b/tools/lib/traceevent/Documentation/libtraceevent-event_find.txt @@ -0,0 +1,99 @@ +libtraceevent(3) +================ + +NAME +---- +tep_find_event,tep_find_event_by_name,tep_find_event_by_record - Find events by given key. + +SYNOPSIS +-------- +[verse] +-- +*#include * + +struct tep_event pass:[*]*tep_find_event*(struct tep_handle pass:[*]_tep_, int _id_); +struct tep_event pass:[*]*tep_find_event_by_name*(struct tep_handle pass:[*]_tep_, const char pass:[*]_sys_, const char pass:[*]_name_); +struct tep_event pass:[*]*tep_find_event_by_record*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_record_); +-- + +DESCRIPTION +----------- +This set of functions can be used to search for an event, based on a given +criteria. All functions require a pointer to a _tep_, trace event parser context. + +The _tep_find_event()_ function searches for an event by given event _id_. + +The tep_find_event_by_name()_ function searches for an event by given +event _name_, under the system _sys_. If the _sys_ is NULL (not specified), +the first event with _name_ is returned. + +The tep_find_event_by_record()_ function searches for an event from a given +_record_. + +RETURN VALUE +------------ +All these functions return a pointer to the found event, or NULL if there is no +such event. + +EXAMPLE +------- +[source,c] +-- +#include +... +struct tep_handle *tep = tep_alloc(); +... +struct tep_event *event; + +event = tep_find_event(tep, 1857); +if (event == NULL) { + /* There is no event with ID 1857 */ +} + +event = tep_find_event_by_name(tep, "kvm", "kvm_exit"); +if (event == NULL) { + /* There is no kvm_exit event, from kvm system */ +} + +void event_from_record(struct tep_record *record) +{ + struct tep_event *event = tep_find_event_by_record(tep, record); + if (event == NULL) { + /* There is no event from given record */ + } +} +... +-- + +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