From mboxrd@z Thu Jan 1 00:00:00 1970 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=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 82BFFC4743C for ; Mon, 14 Jun 2021 11:19:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F851610A0 for ; Mon, 14 Jun 2021 11:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235167AbhFNLVD (ORCPT ); Mon, 14 Jun 2021 07:21:03 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:52183 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235727AbhFNLTW (ORCPT ); Mon, 14 Jun 2021 07:19:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1623669436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mW1OhhDo4BbGrvSu5PYyNkiZcO4Nso/XH9TpPHO3tX8=; b=RK8D9LTf5CY/pQrCwLVXpsHWsDjHYLFLdV1LSK6to1kvgIKI/4dFJcQz73PT4dJkYwZw44 aG4rdLgo98nu11fPE4b4Gp2zHF8DyWYCdcTtOZ2usRBZ9gUfiZanY83jyFSlCZEr0qwrwY e9GUTAEInXHKmRmKEM+SoqDAO4+nb+c= Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-231--pz7aevVPCi7K8NPbA2wCQ-1; Mon, 14 Jun 2021 07:17:14 -0400 X-MC-Unique: -pz7aevVPCi7K8NPbA2wCQ-1 Received: by mail-ed1-f72.google.com with SMTP id h23-20020aa7c5d70000b029038fed7b27d5so19922378eds.21 for ; Mon, 14 Jun 2021 04:17:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=mW1OhhDo4BbGrvSu5PYyNkiZcO4Nso/XH9TpPHO3tX8=; b=rt7EbJ80nWvrfqDCDDl1GQl4YT+4tAr8fPLRxFZXUcW14GLzmHZlePUpeFnfC/W0ec 77YiFSs1JzS8jGrL2o3h2dZJ3SzfvB4zyt0vhbgS4P0eVKwUOZmutLdssXvvE8Tyf300 TIG5U2oYEEd+SxQDg0mR5yPZjrpW43rBjT02Fhs9u0vCYB48vyZsZijNNEM0rfD0aZVt 3S1/SdrtqAyNjMJdMZSE9/024JPhVmDRX3SNpRqV+aR/qMwb59vHXQn7pIwOTONwB+bO nm8DwFsS7X29ksi13CAPfnBRbYiPKRJLZBx1PzRlbtqHKx9klVvgMQ9Yk4khYcF03z+7 VJWw== X-Gm-Message-State: AOAM531ZwoXKeVvNRf+IMR+5IjUoTkNkIj6nHEFa/miK2EGxlW5K5kAl u/XvaWQqn/snFw19nVf2LW292lUXSw9PaYXio3cqBC6ksSh4L1bK/xCpfzJipD/F0Bwdo+BDQtU ZFuQzywtZkDTNBrE2pRn3G32dMV09zQ== X-Received: by 2002:a17:906:b74a:: with SMTP id fx10mr14622064ejb.248.1623669433806; Mon, 14 Jun 2021 04:17:13 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwTrZC854XsPGiSNTA3MALRfR8LN8qGTzOISTOOj/IDn7AHGzR1WW2pb8jHa6tJKhC285AzvQ== X-Received: by 2002:a17:906:b74a:: with SMTP id fx10mr14622049ejb.248.1623669433667; Mon, 14 Jun 2021 04:17:13 -0700 (PDT) Received: from krava ([83.240.60.126]) by smtp.gmail.com with ESMTPSA id y20sm3602394ejm.44.2021.06.14.04.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Jun 2021 04:17:09 -0700 (PDT) Date: Mon, 14 Jun 2021 13:17:08 +0200 From: Jiri Olsa To: "nakamura.shun@fujitsu.com" Cc: "peterz@infradead.org" , "mingo@redhat.com" , "acme@kernel.org" , "mark.rutland@arm.com" , "alexander.shishkin@linux.intel.com" , "namhyung@kernel.org" , "linux-perf-users@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: libperf : Can not create event group Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org On Mon, Jun 14, 2021 at 07:17:53AM +0000, nakamura.shun@fujitsu.com wrote: > Hello. > > perf_evsel__open cannot create an event group because it set group_fd > to -1 when it ran perf_event_open. > Is there any reason why group_fd is fixed at -1? hi, there'no leader link on this level yet (in struct evsel) so this is not implemented at the moment jirka > > Best Regards > Shunsuke