From patchwork Fri Mar 8 13:36:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzvetomir Stoyanov X-Patchwork-Id: 10844823 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 16A0817E9 for ; Fri, 8 Mar 2019 13:37:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 020F12E435 for ; Fri, 8 Mar 2019 13:37:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E8E512E466; Fri, 8 Mar 2019 13:37:31 +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 744282E435 for ; Fri, 8 Mar 2019 13:37:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726747AbfCHNhb (ORCPT ); Fri, 8 Mar 2019 08:37:31 -0500 Received: from mail-wm1-f65.google.com ([209.85.128.65]:39007 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726722AbfCHNhb (ORCPT ); Fri, 8 Mar 2019 08:37:31 -0500 Received: by mail-wm1-f65.google.com with SMTP id z84so12440031wmg.4 for ; Fri, 08 Mar 2019 05:37:30 -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=Vu6QT8s5Srnk+GrxWrbQBtIyr3fk9VDzF7tIoJo3eI0=; b=mUI4yNVsOBr346L8eZHQk9PhUyrxQ3dHj4LJFBu39wXvYT79eo5/2Pk7LsDFVCuP16 HOxx+a1U2hiJ/GyDmphNkQc9gf1+ZLw8WkddJasPpeBiTBTB+h2BdQHDyPl/8AiPn04x bLIrGRjlDutNzutRXjkjyDnH0A5bJo2y4NXbwPk1sye08Wq/1W/ZCdQL5WL3am9XIv+s VSH1zn//aNE7Cti6K+utxYHqYy30DKGqCW1lBAfnQUXVOxqGIGe7c3ubI3/SlE9O035D 8xLganCmbG3t6ibXD0CKl7KDIeV9LJAYQIIcyeVs6KXe1oOxz1G/rxjggNjSvzoW4UTE MYtg== X-Gm-Message-State: APjAAAVSS++FoWuIHQOn2Nrh05rDDP40uLC+808gZIW8kYo7oaxDdDHs GvJbqx9oVsSx+R5ka2qVWKU= X-Google-Smtp-Source: APXvYqzlN6oSQizlK9rSWzUbP7VqQOtqOZQV0wP/XsqM91tPV7ceyNFSPuwf919faxKZcukGpUFLcA== X-Received: by 2002:a05:600c:2115:: with SMTP id u21mr9717766wml.70.1552052249344; Fri, 08 Mar 2019 05:37:29 -0800 (PST) Received: from oberon.eng.vmware.com ([146.247.46.5]) by smtp.gmail.com with ESMTPSA id 132sm19625364wmd.27.2019.03.08.05.37.28 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 08 Mar 2019 05:37:28 -0800 (PST) From: Tzvetomir Stoyanov To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v4 34/46] tools/lib/traceevent: Man pages for tep_filter_event_has_trivial(), tep_update_trivial() and tep_filter_clear_trivial() Date: Fri, 8 Mar 2019 15:36:42 +0200 Message-Id: <20190308133654.21264-35-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_filter_event_has_trivial(), tep_update_trivial() and tep_filter_clear_trivial() as part of the libtraceevent APIs. Signed-off-by: Tzvetomir Stoyanov --- .../libtraceevent-filter_trivial.txt | 112 ++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-filter_trivial.txt diff --git a/tools/lib/traceevent/Documentation/libtraceevent-filter_trivial.txt b/tools/lib/traceevent/Documentation/libtraceevent-filter_trivial.txt new file mode 100644 index 000000000000..7114192d3640 --- /dev/null +++ b/tools/lib/traceevent/Documentation/libtraceevent-filter_trivial.txt @@ -0,0 +1,112 @@ +libtraceevent(3) +================ + +NAME +---- +tep_filter_event_has_trivial,tep_update_trivial,tep_filter_clear_trivial - Check / update / clear trivial rules of given filter. + +SYNOPSIS +-------- +[verse] +-- +*#include * + +enum *tep_filter_trivial_type* { + _TEP_FILTER_TRIVIAL_FALSE_, + _TEP_FILTER_TRIVIAL_TRUE_, + _TEP_FILTER_TRIVIAL_BOTH_, +}; + +int *tep_filter_event_has_trivial*(struct tep_event_filter pass:[*]_filter_, int _event_id_, enum tep_filter_trivial_type _type_); +int *tep_update_trivial*(struct tep_event_filter pass:[*]_dest_, struct tep_event_filter pass:[*]_source_, enum tep_filter_trivial_type _type_); +int *tep_filter_clear_trivial*(struct tep_event_filter pass:[*]_filter_, enum tep_filter_trivial_type _type_); +-- + +DESCRIPTION +----------- +The _tep_filter_event_has_trivial()_ function checks if the event with +_event_id_ contains a trivial _filter_ of _type_. + +The _tep_update_trivial()_ function updates the trivial rules with the given +filter. It scans _dest_ for trivial events matching _type_ to replace with +the _source_. + +The _tep_filter_clear_trivial()_ function clears TRUE and FALSE rules. +It removes rules in the _filter_ that only contain a given _type_ boolean arg. + +The trivial _type_, used as argument of these functions can be: +[verse] +-- + _TEP_FILTER_TRIVIAL_FALSE_ - TRUE + _TEP_FILTER_TRIVIAL_TRUE_ - FALSE + _TEP_FILTER_TRIVIAL_BOTH_ - TRUE or FALSE + +-- + +RETURN VALUE +------------ +The _tep_filter_event_has_trivial()_ function returns 1 if the event contains +a matching trivial type, otherwise 0. + +The _tep_update_trivial()_ function returns 0 on success, or -1 if there was +a problem updating, but events may have still been updated on error. + +The _tep_filter_clear_trivial()_ function returns 0 on success, or -1 if there +was a problem. + +EXAMPLE +------- +[source,c] +-- +#include +... +struct tep_handle *tep = tep_alloc(); +struct tep_event_filter *filter1 = tep_filter_alloc(tep); +struct tep_event_filter *filter2 = tep_filter_alloc(tep); +... +if (tep_filter_event_has_trivial(filter1, 1857,TEP_FILTER_TRIVIAL_FALSE) == 0) { + /* There are FALSE rules in filer1 for the event 1857 */ +} + +if (tep_update_trivial(filter1, filter2, TEP_FILTER_TRIVIAL_TRUE) != 0) { + /* Failed to update TRUE trivial rules of filter1 with filter2 */ +} + +if (tep_filter_clear_trivial(filter, TEP_FILTER_TRIVIAL_BOTH) == 0) { + /* Failed to clear TRUE and FALSE trivial rules of filter1 */ +} +... +-- + +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