From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id 5B4083858D39 for ; Fri, 8 Oct 2021 15:58:01 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 5B4083858D39 Received: from mail-qv1-f72.google.com (mail-qv1-f72.google.com [209.85.219.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-30--NoZxT1IOHyq8hQf8y0DGg-1; Fri, 08 Oct 2021 11:57:40 -0400 X-MC-Unique: -NoZxT1IOHyq8hQf8y0DGg-1 Received: by mail-qv1-f72.google.com with SMTP id ey7-20020a0562140b6700b00382cf3eb480so8956185qvb.22 for ; Fri, 08 Oct 2021 08:57:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:to:from:subject:cc:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=t/gpoal7kKHASLhUxUzEdo76jxdasCN4foB/2JL1Ha8=; b=syfwNgQ41XrPkAaEu7608AoohFCCj1ZQftXi0xkJqxc+qnmkfNtRRsk9WnMbiMLd2v WsTNZoj3yIuDvNc41pbS4wmHUOu5ih0epOKSicPL1XpoT9yQyu2qTJYUGmaK7/k/NQYk Bbc8hcH1xjvaF/lxvSU820aH/0M37YrtqGiGGWIT6cHk4gRotBGe0bK98lxkUqwUZDZ+ i6ZUJBCK0ghwy4Os4w+tdFecH5Mg97yvVWpQWRwZCmlu8Ma4SimkDtQGJoaEhkmV3n8l Ztr2NGd+iiWwn0/+hTno12UyTabMaGCpIgLjiMKVLiPvmFx8n5wj7lVe79HGwYmqKIz9 FZ2Q== X-Gm-Message-State: AOAM532taoS8Agch+U/49R4NA2Mgh8Sw3B+od8Ics+N8n/NaljUAD3ro nSj/hUDnCG9XNbFrdmhU747aPfH2Hqjp7+kHhYjTh2ZoU687ntnJNfFtQDEQroXUSs80Yf7tcmK zIMGaAk/AfjPkJylEHYgkVFBFkBtTgklwN0ub+Lpw+cax+o2T1lr5u7itsYxKP/0/Lw== X-Received: by 2002:a37:9f12:: with SMTP id i18mr2534315qke.418.1633708659622; Fri, 08 Oct 2021 08:57:39 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyg2I/69KUy6O7gFsSHZEEWkE1gAXdSLzj/8Thl/yOzGCtB/DJJpbarmdQv//TzyS60AoPsUw== X-Received: by 2002:a37:9f12:: with SMTP id i18mr2534297qke.418.1633708659393; Fri, 08 Oct 2021 08:57:39 -0700 (PDT) Received: from [192.168.86.23] ([136.56.129.226]) by smtp.gmail.com with ESMTPSA id f15sm2696582qtf.66.2021.10.08.08.57.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 08 Oct 2021 08:57:39 -0700 (PDT) To: linux-perf-users@vger.kernel.org From: Stan Cox Subject: SDT probes 'f' float type indicator Cc: systemtap@sourceware.org Message-ID: Date: Fri, 8 Oct 2021 11:57:38 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.2 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: systemtap@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Systemtap mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Oct 2021 15:58:02 -0000 Just an FYI that support was added to the upstream user space SDT probes to indicate that an argument can be a float argument. SDT probes are recorded in the .note.stapsdt section and the syntax of a probes' argument is: [-][Size][f]@[Address] where: '-' is optional and indicates a signed type Size is the sizeof() the type 'f' is optional and indicates a float type This is a new syntax feature Address is typically one of: Literal | Register | Offset(Register) | Register,Register | Offset(Register,Register)