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GET /api/patches/2232084/?format=api
{ "id": 2232084, "url": "http://patchwork.ozlabs.org/api/patches/2232084/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260502143237.23456-1-atrajeev@linux.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": "<20260502143237.23456-1-atrajeev@linux.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260502143237.23456-1-atrajeev@linux.ibm.com/", "date": "2026-05-02T14:32:36", "name": "[V4,1/2] 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/people/90290/?format=api", "name": "Athira Rajeev", "email": "atrajeev@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260502143237.23456-1-atrajeev@linux.ibm.com/mbox/", "series": [ { "id": 502532, "url": "http://patchwork.ozlabs.org/api/series/502532/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502532", "date": "2026-05-02T14:32:36", "name": "[V4,1/2] powerpc tools perf: Initialize error code in auxtrace_record_init function", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/502532/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232084/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232084/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20382-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=ZXXY0bci;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-20382-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)", "lists.ozlabs.org;\n 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b=ZXXY0bcimFS7s+UuKIRYE6gYUWW/BXtHAvxgkOyFfZ9XTVuTFlNyV/xSW\n\taz3N3Z2JFKiQEgq6vSse/rJqp3Vv22bCDXEp5c8HMFUY5WxMON1KXhce6FR8BW5f\n\ti9yzeVVnFUmWQ6YrcN721u0/T7TkmcAIqwyyPSv68HxRphmBl4YDnLNBOfpzXO7j\n\t8z5ZvDWx6WY0+5UKn+CM6HrYQAa2pr3x77bi+NveGCtZaTvKEYEcWGOQw+SaLfEY\n\t8IpXROzu5d8r1/udbTpHxNTUfpWw6EJZMGXAxljuVOUY7vnIELN0lKb4MkuZGVeK\n\tZ9HTI/BQe7LatXzOSDkbbf2qZG6qw==", "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 V4 1/2] powerpc tools perf: Initialize error code in\n auxtrace_record_init function", "Date": "Sat, 2 May 2026 20:02:36 +0530", "Message-Id": "<20260502143237.23456-1-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": "AW1haW4tMjYwNTAyMDE0MSBTYWx0ZWRfX+GjDJc/uByfZ\n 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engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-05-02_03,2026-04-30_02,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n impostorscore=0 clxscore=1015 malwarescore=0 bulkscore=0 suspectscore=0\n priorityscore=1501 spamscore=0 phishscore=0 adultscore=0 lowpriorityscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605020141", "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": [ "V4", "1/2" ] }