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GET /api/1.1/patches/2228338/?format=api
{ "id": 2228338, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2228338/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260426064301.90614-1-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": "<20260426064301.90614-1-atrajeev@linux.ibm.com>", "date": "2026-04-26T06:43:01", "name": "powerpc tools perf: Initialize error code in auxtrace_record_init function", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e9200333e4805660a082c4f55bea2788fa448187", "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/20260426064301.90614-1-atrajeev@linux.ibm.com/mbox/", "series": [ { "id": 501504, "url": "http://patchwork.ozlabs.org/api/1.1/series/501504/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501504", "date": "2026-04-26T06:43:01", "name": "powerpc tools perf: Initialize error code in auxtrace_record_init function", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501504/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2228338/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2228338/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20102-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=gH9QY3Pj; 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=BvtwsbBAQmFfsApxt3IjotvrGVZq0fRyTEkJQ6H4G\n\tiA=; b=gH9QY3Pj/ypuBGLPX2eiahLyRYZMm8aTQ2N/WfftcQ9RCZWmYbHSh38JW\n\t1TodbPkKmrUNTUcknwVguvYpJuCtkOF1uF74cP/dftBK1sAF3N6tGjeJvSJYgWK+\n\tkMGdELbQbG2TYl0xSa6nO19yIDdduwStFO5BZM1BEHa0CRuj41mBXU5DcRYmucJV\n\tIVx7Wxhhlt2Vc0qRGkQ6FZa4i4NHxvyssN3y25x31qUWg7+VTa13B/y+yzsJbHuz\n\tuDsr9Ug+YwqsgMOJ8D8aPrVWtQYmtmuZOutBxBhABy4JGeyInbeUM4qF+HX7/jI1\n\tkT4NQX59DAZLLb2AUyv4vYH8OCCbA==", "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.Nittor@ibm.com", "Subject": "[PATCH] powerpc tools perf: Initialize error code in\n auxtrace_record_init function", "Date": "Sun, 26 Apr 2026 12:13:01 +0530", "Message-Id": "<20260426064301.90614-1-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-Authority-Analysis": "v=2.4 cv=CIIamxrD c=1 sm=1 tr=0 ts=69edb404 cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=ftuLF5Up4WlwXrOVWlAA:9", "X-Proofpoint-ORIG-GUID": "bYUMPJ6H1heoRJh39AfiN_fYqvVf61Ci", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDI2MDA2NCBTYWx0ZWRfXy+Aal/eGWTsM\n uqngYrTbES04FSB8FNE4WSD68/HBXt0Vnkt4Dvl7Ov0KQsKHG/mxWdH2ebypf8/UNNPh79T3Bmw\n 02idVCyeZlNJmq8z1l8RenLJSpllNoOrYs2+hTfDftPqBTaQ4AcL3mWrD+dJxtpW9t4r9qaaefJ\n xMxMSiiSj8sgGxtxtzda09QiBhGmb04r+oFdRCAXg4sGYv7mVR3SIUQwZ63xLxywO3MZ8HdO5qB\n B43rgCSCwJ2IP0CWqGTHZam863m1ZnQa0mBM/KugpvCG7TpKDwLUJHeR6cEOA9NbCOUhp0w2th5\n K/ebcjxpC0qjxs0Ifozh9XZ5SaQ5MaKNHQUFQSwnY4E2yAcgt4mCwmNdrMNTBMXRrvV7Oteh07U\n 7ZBh0lojKHSI3WokHyHH5v/hHgBA/OgF0MpEKiw6lhQycjcOo2Lw1Ir/Jah/CXytrl8Z9wOu+ub\n hYliZIycl1C1OdSxjbg==", "X-Proofpoint-GUID": "bWpierwrhwraEXgfOg4amxVOG0XjDD88", "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=2026-04-26_02,2026-04-21_02,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n spamscore=0 phishscore=0 malwarescore=0 suspectscore=0 adultscore=0\n impostorscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0\n priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000\n definitions=main-2604260064", "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\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\nSigned-off-by: Athira Rajeev <atrajeev@linux.ibm.com>\n---\n tools/perf/arch/powerpc/util/auxtrace.c | 13 +++++++++++++\n 1 file changed, 13 insertions(+)", "diff": "diff --git a/tools/perf/arch/powerpc/util/auxtrace.c b/tools/perf/arch/powerpc/util/auxtrace.c\nindex e39deff6c857..fe1ea4e222f3 100644\n--- a/tools/perf/arch/powerpc/util/auxtrace.c\n+++ b/tools/perf/arch/powerpc/util/auxtrace.c\n@@ -71,6 +71,19 @@ struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,\n \tstruct evsel *pos;\n \tint found = 0;\n \n+\t/*\n+\t * Assign err value to zero here. Any fail later\n+\t * will set appropriate return code to err.\n+\t * Even if we haven't found any event for auxtrace, perf\n+\t * record should continue for other events. NULL return\n+\t * will indicate that there is no auxtrace record initialized.\n+\t *\n+\t * Not having \"err\" set here will affect monitoring\n+\t * of other events also because perf record will fail seeing\n+\t * random value in 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;\n", "prefixes": [] }