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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E58F1C001DC for ; Sat, 29 Jul 2023 07:36:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229617AbjG2HgD (ORCPT ); Sat, 29 Jul 2023 03:36:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229737AbjG2Hf6 (ORCPT ); Sat, 29 Jul 2023 03:35:58 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC0004C05; Sat, 29 Jul 2023 00:35:49 -0700 (PDT) Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36T7Vd3A002899; Sat, 29 Jul 2023 07:35:23 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=k9deFilQAYH3Se3ZM2RqMNcHtPdKhbHAAGRsaS1/7eE=; b=eQVnGsWhIbGaP5cazCzArF7T9kG86XKjD6AJatjg20/77m8dsoslvDAzi5VVx0YAD1Ex K+eGWaD7j6EA2OkFUV0PFVhP+AfiV120zozZ8dx7Ov1E9CrUmLFh7Gmhc/fZyHJY//2Y ekRNz8WA6/dacb235RhtKeKu/a7sCH8YWd0v+HcZCR/NJzEsFlYXHKvEFD2gpTLKs1dR WvacMJ049eI/03xFOo9p9Bd+030wO5gw88pURAMO6CyjNRjDAyIbYl4iJrhSOyhQdwDp S+Ya4zbfdQUHB4S7s8zh9fQnO9oIQ2bJGTLI9rOppcq++pllCrRx4N1FTM0qabzotcL0 Qw== Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3s4xf085e4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 29 Jul 2023 07:35:23 +0000 Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 36T6KKJe026189; Sat, 29 Jul 2023 07:35:22 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 3s0sesw7kw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 29 Jul 2023 07:35:22 +0000 Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 36T7ZJDG20841100 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 29 Jul 2023 07:35:19 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7E7C820040; Sat, 29 Jul 2023 07:35:19 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2A8B52004B; Sat, 29 Jul 2023 07:35:17 +0000 (GMT) Received: from li-e8dccbcc-2adc-11b2-a85c-bc1f33b9b810.ibm.com.com (unknown [9.171.60.192]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Sat, 29 Jul 2023 07:35:16 +0000 (GMT) From: Kajol Jain To: mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, maddy@linux.ibm.com, atrajeev@linux.vnet.ibm.com, disgoel@linux.ibm.com, kjain@linux.ibm.com, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, rdunlap@infradead.org Subject: [PATCH v4 02/10] docs: ABI: sysfs-bus-event_source-devices-hv_gpci: Document processor_bus_topology sysfs interface file Date: Sat, 29 Jul 2023 13:04:47 +0530 Message-Id: <20230729073455.7918-3-kjain@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20230729073455.7918-1-kjain@linux.ibm.com> References: <20230729073455.7918-1-kjain@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: -gylUQ9AY_CiY7yczIsi9AiQfjaQ4bqX X-Proofpoint-GUID: -gylUQ9AY_CiY7yczIsi9AiQfjaQ4bqX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-27_10,2023-07-26_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 spamscore=0 impostorscore=0 malwarescore=0 mlxlogscore=999 lowpriorityscore=0 mlxscore=0 phishscore=0 clxscore=1015 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307290068 Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Add details of the new hv-gpci interface file called "processor_bus_topology" in the ABI documentation. Reviewed-by: Athira Rajeev Signed-off-by: Kajol Jain --- .../sysfs-bus-event_source-devices-hv_gpci | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci index 12e2bf92783f..ba3f9aa3d68e 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci @@ -80,3 +80,35 @@ Contact: Linux on PowerPC Developer List Description: read only This sysfs file exposes the cpumask which is designated to make HCALLs to retrieve hv-gpci pmu event counter data. + +What: /sys/devices/hv_gpci/interface/processor_bus_topology +Date: July 2023 +Contact: Linux on PowerPC Developer List +Description: admin read only + This sysfs file exposes the system topology information by making HCALL + H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value + PROCESSOR_BUS_TOPOLOGY(0xD0). + + * This sysfs file will be created only for power10 and above platforms. + + * User needs root privileges to read data from this sysfs file. + + * This sysfs file will be created, only when the HCALL returns "H_SUCCESS", + "H_AUTHORITY" or "H_PARAMETER" as the return type. + + HCALL with return error type "H_AUTHORITY" can be resolved during + runtime by setting "Enable Performance Information Collection" option. + + * The end user reading this sysfs file must decode the content as per + underlying platform/firmware. + + Possible error codes while reading this sysfs file: + + * "-EPERM" : Partition is not permitted to retrieve performance information, + required to set "Enable Performance Information Collection" option. + + * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address + or because of some hardware error. Refer to getPerfCountInfo documentation for + more information. + + * "-EFBIG" : System information exceeds PAGE_SIZE. -- 2.39.3