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GET /api/patches/812482/?format=api
{ "id": 812482, "url": "http://patchwork.ozlabs.org/api/patches/812482/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1505151134-26128-1-git-send-email-anju@linux.vnet.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<1505151134-26128-1-git-send-email-anju@linux.vnet.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/1505151134-26128-1-git-send-email-anju@linux.vnet.ibm.com/", "date": "2017-09-11T17:32:14", "name": "powerpc/perf: Fix for core/nest imc call trace on cpuhotplug", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "e679d1e4f9cd9fb094f7fecc3e4e9863a7551277", "submitter": { "id": 67491, "url": "http://patchwork.ozlabs.org/api/people/67491/?format=api", "name": "Anju T Sudhakar", "email": "anju@linux.vnet.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1505151134-26128-1-git-send-email-anju@linux.vnet.ibm.com/mbox/", "series": [ { "id": 2535, "url": "http://patchwork.ozlabs.org/api/series/2535/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=2535", "date": "2017-09-11T17:32:14", "name": "powerpc/perf: Fix for core/nest imc call trace on cpuhotplug", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/2535/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/812482/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/812482/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xrZm22kWLz9s81\n\tfor <patchwork-incoming@ozlabs.org>;\n\tTue, 12 Sep 2017 03:33:54 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xrZm21ZkGzDrnd\n\tfor <patchwork-incoming@ozlabs.org>;\n\tTue, 12 Sep 2017 03:33:54 +1000 (AEST)", "from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com\n\t[148.163.158.5])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xrZkS0gSnzDrYV\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tTue, 12 Sep 2017 03:32:31 +1000 (AEST)", "from pps.filterd (m0098421.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id\n\tv8BHTIsf040910\n\tfor <linuxppc-dev@lists.ozlabs.org>; Mon, 11 Sep 2017 13:32:29 -0400", "from e23smtp01.au.ibm.com (e23smtp01.au.ibm.com [202.81.31.143])\n\tby mx0a-001b2d01.pphosted.com with ESMTP id 2cwx4gtvrd-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor <linuxppc-dev@lists.ozlabs.org>; Mon, 11 Sep 2017 13:32:29 -0400", "from localhost\n\tby e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! Violators will be prosecuted\n\tfor <linuxppc-dev@lists.ozlabs.org> from <anju@linux.vnet.ibm.com>;\n\tTue, 12 Sep 2017 03:32:26 +1000", "from d23relay06.au.ibm.com (202.81.31.225)\n\tby e23smtp01.au.ibm.com (202.81.31.207) with IBM ESMTP SMTP Gateway:\n\tAuthorized Use Only! Violators will be prosecuted; \n\tTue, 12 Sep 2017 03:32:19 +1000", "from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96])\n\tby d23relay06.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n\tv8BHWI8F28377224\n\tfor <linuxppc-dev@lists.ozlabs.org>; Tue, 12 Sep 2017 03:32:18 +1000", "from d23av01.au.ibm.com (localhost [127.0.0.1])\n\tby d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id\n\tv8BHWIqM000897\n\tfor <linuxppc-dev@lists.ozlabs.org>; Tue, 12 Sep 2017 03:32:18 +1000", "from xenial-xerus.in.ibm.com ([9.79.235.20])\n\tby d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id\n\tv8BHWFSd000811; Tue, 12 Sep 2017 03:32:16 +1000" ], "Authentication-Results": "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com\n\t(client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com;\n\tenvelope-from=anju@linux.vnet.ibm.com; receiver=<UNKNOWN>)", "From": "Anju T Sudhakar <anju@linux.vnet.ibm.com>", "To": "mpe@ellerman.id.au", "Subject": "[PATCH] powerpc/perf: Fix for core/nest imc call trace on cpuhotplug", "Date": "Mon, 11 Sep 2017 23:02:14 +0530", "X-Mailer": "git-send-email 2.7.4", "X-TM-AS-MML": "disable", "x-cbid": "17091117-1617-0000-0000-000001FF5F39", "X-IBM-AV-DETECTION": "SAVI=unused REMOTE=unused XFE=unused", "x-cbparentid": "17091117-1618-0000-0000-0000484DBD3E", "Message-Id": "<1505151134-26128-1-git-send-email-anju@linux.vnet.ibm.com>", "X-Proofpoint-Virus-Version": "vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-09-11_06:, , signatures=0", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=1\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000\n\tdefinitions=main-1709110264", "X-BeenThere": "linuxppc-dev@lists.ozlabs.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List\n\t<linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Cc": "hemant@linux.vnet.ibm.com, maddy@linux.vnet.ibm.com,\n\tlinuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,\n\tanju@linux.vnet.ibm.com", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org", "Sender": "\"Linuxppc-dev\"\n\t<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "content": "Nest/core pmu units are enabled only when it is used. A reference count is\nmaintained for the events which uses the nest/core pmu units. Currently in\n*_imc_counters_release function a WARN() is used for notification of any\nunderflow of ref count. Replace WARN() with a pr_info since it is an overkill.\n\nSigned-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>\nAcked-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>\n---\n arch/powerpc/perf/imc-pmu.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c\nindex 9ccac86..4d523d0 100644\n--- a/arch/powerpc/perf/imc-pmu.c\n+++ b/arch/powerpc/perf/imc-pmu.c\n@@ -409,7 +409,7 @@ static void nest_imc_counters_release(struct perf_event *event)\n \t\t\treturn;\n \t\t}\n \t} else if (ref->refc < 0) {\n-\t\tWARN(1, \"nest-imc: Invalid event reference count\\n\");\n+\t\tpr_info(\"nest-imc: Invalid event reference count\\n\");\n \t\tref->refc = 0;\n \t}\n \tmutex_unlock(&ref->lock);\n@@ -656,7 +656,7 @@ static void core_imc_counters_release(struct perf_event *event)\n \t\t\treturn;\n \t\t}\n \t} else if (ref->refc < 0) {\n-\t\tWARN(1, \"core-imc: Invalid event reference count\\n\");\n+\t\tpr_info(\"core-imc: Invalid event reference count\\n\");\n \t\tref->refc = 0;\n \t}\n \tmutex_unlock(&ref->lock);\n", "prefixes": [] }