From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757526AbdDRRD3 (ORCPT ); Tue, 18 Apr 2017 13:03:29 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:39930 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757316AbdDRRCV (ORCPT ); Tue, 18 Apr 2017 13:02:21 -0400 From: Anju T Sudhakar To: mpe@ellerman.id.au Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, ego@linux.vnet.ibm.com, bsingharora@gmail.com, benh@kernel.crashing.org, paulus@samba.org, anton@samba.org, sukadev@linux.vnet.ibm.com, mikey@neuling.org, stewart@linux.vnet.ibm.com, dja@axtens.net, eranian@google.com, hemant@linux.vnet.ibm.com, maddy@linux.vnet.ibm.com, anju@linux.vnet.ibm.com Subject: [PATCH v7 8/10] powerpc/powernv: Thread IMC events detection Date: Tue, 18 Apr 2017 22:31:48 +0530 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1492534910-7991-1-git-send-email-anju@linux.vnet.ibm.com> References: <1492534910-7991-1-git-send-email-anju@linux.vnet.ibm.com> X-TM-AS-MML: disable x-cbid: 17041817-0016-0000-0000-0000040BB549 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17041817-0017-0000-0000-000028F567E6 Message-Id: <1492534910-7991-9-git-send-email-anju@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-04-18_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1704180133 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch adds support for detection of thread IMC events. It adds a new domain IMC_DOMAIN_THREAD and it is determined with the help of the compatibility string "ibm,imc-counters-thread" based on the IMC device tree. Signed-off-by: Anju T Sudhakar Signed-off-by: Hemant Kumar Signed-off-by: Madhavan Srinivasan --- arch/powerpc/include/asm/imc-pmu.h | 2 ++ arch/powerpc/perf/imc-pmu.c | 1 + arch/powerpc/platforms/powernv/opal-imc.c | 18 +++++++++++++++++- 3 files changed, 20 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/imc-pmu.h b/arch/powerpc/include/asm/imc-pmu.h index bf5fb7c..6260e61 100644 --- a/arch/powerpc/include/asm/imc-pmu.h +++ b/arch/powerpc/include/asm/imc-pmu.h @@ -49,6 +49,7 @@ #define IMC_DTB_COMPAT "ibm,opal-in-memory-counters" #define IMC_DTB_NEST_COMPAT "ibm,imc-counters-nest" #define IMC_DTB_CORE_COMPAT "ibm,imc-counters-core" +#define IMC_DTB_THREAD_COMPAT "ibm,imc-counters-thread" /* * Structure to hold per chip specific memory address @@ -98,6 +99,7 @@ struct imc_pmu { */ #define IMC_DOMAIN_NEST 1 #define IMC_DOMAIN_CORE 2 +#define IMC_DOMAIN_THREAD 3 #define IMC_DOMAIN_UNKNOWN -1 #define IMC_COUNTER_ENABLE 1 diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index aa9e8ba..ac69d81 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -41,6 +41,7 @@ struct imc_pmu *core_imc_pmu; /* Needed for sanity check */ extern u64 nest_max_offset; extern u64 core_max_offset; +extern u64 thread_max_offset; PMU_FORMAT_ATTR(event, "config:0-20"); static struct attribute *imc_format_attrs[] = { diff --git a/arch/powerpc/platforms/powernv/opal-imc.c b/arch/powerpc/platforms/powernv/opal-imc.c index 23507d7..940f6b9 100644 --- a/arch/powerpc/platforms/powernv/opal-imc.c +++ b/arch/powerpc/platforms/powernv/opal-imc.c @@ -35,6 +35,7 @@ u64 nest_max_offset; u64 core_max_offset; +u64 thread_max_offset; static int imc_event_prop_update(char *name, struct imc_events *events) { @@ -119,6 +120,10 @@ static void update_max_value(u32 value, int pmu_domain) if (core_max_offset < value) core_max_offset = value; break; + case IMC_DOMAIN_THREAD: + if (thread_max_offset < value) + thread_max_offset = value; + break; default: /* Unknown domain, return */ return; @@ -362,7 +367,7 @@ static struct imc_events *imc_events_setup(struct device_node *parent, /* * imc_pmu_create : Takes the parent device which is the pmu unit and a * pmu_index as the inputs. - * Allocates memory for the pmu, sets up its domain (NEST/CORE), and + * Allocates memory for the pmu, sets up its domain (NEST/CORE/THREAD), and * calls imc_events_setup() to allocate memory for the events supported * by this pmu. Assigns a name for the pmu. Calls imc_events_node_parser() * to setup the individual events. @@ -483,6 +488,17 @@ static void __init imc_pmu_setup(struct device_node *parent) return; pmu_count++; } + /* + * Loop through the imc-counters tree for each compatible + * "ibm,imc-counters-thread", and update "struct imc_pmu". + */ + for_each_compatible_node(child, NULL, IMC_DTB_THREAD_COMPAT) { + domain = IMC_DOMAIN_THREAD; + rc = imc_pmu_create(child, pmu_count, domain); + if (rc) + return; + pmu_count++; + } } static int opal_imc_counters_probe(struct platform_device *pdev) -- 2.7.4