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GET /api/1.1/patches/2231904/?format=api
{ "id": 2231904, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2231904/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260501145436.1327-1-atrajeev@linux.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.1/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/" }, "msgid": "<20260501145436.1327-1-atrajeev@linux.ibm.com>", "date": "2026-05-01T14:54:35", "name": "[V2,1/2] powerpc tools perf: Initialize error code in auxtrace_record_init function", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f4b8b1973afaea02837e2c67f4e6607b73bf2fd7", "submitter": { "id": 90290, "url": "http://patchwork.ozlabs.org/api/1.1/people/90290/?format=api", "name": "Athira Rajeev", "email": "atrajeev@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260501145436.1327-1-atrajeev@linux.ibm.com/mbox/", "series": [ { "id": 502470, "url": "http://patchwork.ozlabs.org/api/1.1/series/502470/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502470", "date": "2026-05-01T14:54:35", "name": "[V2,1/2] powerpc tools perf: Initialize error code in auxtrace_record_init function", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/502470/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2231904/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2231904/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20365-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", 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dis=none) header.from=linux.ibm.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=SBYRZ9S3; dkim-atps=neutral;\n spf=pass (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=atrajeev@linux.ibm.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:message-id:mime-version\n\t:subject:to; s=pp1; bh=kuHqVdlej+Yn0HOXIpjPZZdn1xMOEqKbsgmm1UXRw\n\tMU=; b=SBYRZ9S3cwCc+ijcXzzUkgUoDzR4d3nHzz9VHawxk6E8hBaY32/8yUWZJ\n\ticIR5Zizr8QMY7U8XHw7rScLDVD2zYaXmQXTZ7wAfJlO9Ml+iF07wtoP7Z3Lqas1\n\t1Rf/2LyZQq1wce+bM6YvLmRpU/KmAVDQKxVUxiz4Kc18D8VOy2IRW3MlSJjFBhoo\n\tCFG0GgUuqOwlNCMl+fB/uKjXz7LLsd0ZjXdWkdGWguQo5vMH7DhOFssVaSefeP6Z\n\t8ypDi1agFNiHBaZOODfhGWmr02OLsf0secMtfju1xAGFOipEVMBbUim1dsBsN8U0\n\tBnU4Ix9vl3o0sni/Y6HgHSOQQVISQ==", "From": "Athira Rajeev <atrajeev@linux.ibm.com>", "To": "acme@kernel.org, jolsa@kernel.org, adrian.hunter@intel.com,\n mpetlan@redhat.com, tmricht@linux.ibm.com, maddy@linux.ibm.com,\n irogers@google.com, namhyung@kernel.org", "Cc": "linux-perf-users@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,\n atrajeev@linux.ibm.com, hbathini@linux.vnet.ibm.com,\n Tejas.Manhas1@ibm.com, Tanushree.Shah@ibm.com, shivani@linux.ibm.com", "Subject": "[PATCH V2 1/2] powerpc tools perf: Initialize error code in\n auxtrace_record_init function", "Date": "Fri, 1 May 2026 20:24:35 +0530", "Message-Id": "<20260501145436.1327-1-atrajeev@linux.ibm.com>", "X-Mailer": "git-send-email 2.39.5 (Apple Git-154)", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Proofpoint-Reinject": "loops=2 maxloops=12", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNTAxMDE0NCBTYWx0ZWRfXzw7Kyx3OOjLu\n GQeUXRnJ6nu6bW0s/Mykpu0fhIqoAC36qPa9GpWQ4ADRf/QJ5KcRCMiWlAEVOk+7fMVFHq55w05\n 2Kb660OGsup3VT00U7tkqsYtDD1hrCgEG6VE931M3C5zWWQshV6ux4mkHeLTpJjoztrBwh+1Z+w\n 5v4d9lNJYq7fhZn6GdWYZqotcaMDMSiIpaceepzdsFkzGabaZ+7ZTtmnXeMRny+16G77l45LZ+A\n UFlC8wZgy8tL4YppsA2mqFWyNWF1VQbzGDMV0qO6CSHbxfQqmI5It3+X20ZBImXrcv+4xyXgwz4\n P6sh9pyrBZo7jtj39V6QlI6rH1mFTJn+LNh+F3sD8JPQP48T1rW/IxNe47Gojc+QCBomStMPKaL\n xl23mu6GVCMEmX6cHgT7OlMIlVur1KQmU4T2U/8IrMJMZY5T5BFlrtsqQto2CbzhR8A54J7AP1M\n H/Gw2KqoxFv3vKUNJUw==", "X-Proofpoint-GUID": "HIVe6_rP_G6RzeSe3zHGvRG6kq2VIf2S", "X-Proofpoint-ORIG-GUID": "wYbumdJK_kxEKnTysEdaOU5mWy_afGsX", "X-Authority-Analysis": "v=2.4 cv=MohiLWae c=1 sm=1 tr=0 ts=69f4beba cx=c_pps\n a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17\n a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=UYfmDeaf6v5XVjAx5qsA:9", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-05-01_04,2026-04-30_02,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 spamscore=0\n priorityscore=1501 malwarescore=0 clxscore=1015 lowpriorityscore=0\n impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000\n definitions=main-2605010144", "X-Spam-Status": "No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "perf trace record fails some cases in powerpc\n\n # ./perf test \"perf trace record and replay\"\n 128: perf trace record and replay : FAILED!\n\n # ./perf trace record sleep 1\n # echo $?\n 32\n\nThis is happening because of non-zero err value from\nauxtrace_record__init() function.\n\n static int record__auxtrace_init(struct record *rec)\n {\n int err;\n\n if ((rec->opts.auxtrace_snapshot_opts || rec->opts.auxtrace_sample_opts)\n && record__threads_enabled(rec)) {\n pr_err(\"AUX area tracing options are not available in parallel streaming mode.\\n\");\n return -EINVAL;\n }\n\n if (!rec->itr) {\n rec->itr = auxtrace_record__init(rec->evlist, &err);\n if (err)\n return err;\n }\n\nHere \"int err\" is not initialised. The code expects \"err\" to be set\nfrom auxtrace_record__init() function.\n\nUpdate auxtrace_record__init() in arch/powerpc/util/auxtrace.c to clear\nerr value in the beginning.\n\n- Clear err value in beginning of function. Any fail later will\nset appropriate return code to err.\n- Even if we haven't found any event for auxtrace, perf record\nshould continue for other events. NULL return\nwill indicate that there is no auxtrace record initialized.\n- Not having \"err\" set here will affect monitoring of other events\nalso because perf record will fail seeing random value in err.\n\nSet err to -EINVAL before invoking auxtrace_record__init() in\nbuiltin-record.c\n\nWith the fix,\n\n # ./perf trace record sleep 1\n [ perf record: Woken up 2 times to write data ]\n [ perf record: Captured and wrote 0.033 MB perf.data (228 samples) ]\n\nFixes: 1dbfaf94cf66 (\"perf powerpc: Add basic CONFIG_AUXTRACE support for VPA pmu on powerpc\")\nSigned-off-by: Athira Rajeev <atrajeev@linux.ibm.com>\n---\nChangelog:\nv1 -> v2\nAddressed review comment from Adrian:\n- Set err to -EINVAL before invoking auxtrace_record__init() in\n builtin-record.c\n- Added kernel-doc to auxtrace_record__init() in tools/perf/util/auxtrace.c\nAddressed review comment from Namhyung:\n- Added fixes tag\n\n tools/perf/arch/powerpc/util/auxtrace.c | 6 ++++++\n tools/perf/builtin-record.c | 1 +\n 2 files changed, 7 insertions(+)", "diff": "diff --git a/tools/perf/arch/powerpc/util/auxtrace.c b/tools/perf/arch/powerpc/util/auxtrace.c\nindex e39deff6c857..4600a1661b4f 100644\n--- a/tools/perf/arch/powerpc/util/auxtrace.c\n+++ b/tools/perf/arch/powerpc/util/auxtrace.c\n@@ -71,6 +71,12 @@ struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,\n \tstruct evsel *pos;\n \tint found = 0;\n \n+\t/*\n+\t * Set err value to zero here. Any fail later\n+\t * will set appropriate return code to err.\n+\t */\n+\t*err = 0;\n+\n \tevlist__for_each_entry(evlist, pos) {\n \t\tif (strstarts(pos->name, \"vpa_dtl\")) {\n \t\t\tfound = 1;\ndiff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c\nindex 4a5eba498c02..708825747af5 100644\n--- a/tools/perf/builtin-record.c\n+++ b/tools/perf/builtin-record.c\n@@ -865,6 +865,7 @@ static int record__auxtrace_init(struct record *rec)\n \t}\n \n \tif (!rec->itr) {\n+\t\terr = -EINVAL;\n \t\trec->itr = auxtrace_record__init(rec->evlist, &err);\n \t\tif (err)\n \t\t\treturn err;\n", "prefixes": [ "V2", "1/2" ] }