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GET /api/1.1/patches/2228335/?format=api
{ "id": 2228335, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2228335/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260426043006.48113-1-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": "<20260426043006.48113-1-atrajeev@linux.ibm.com>", "date": "2026-04-26T04:30:06", "name": "[V2] tools/perf: Fix the check for parameterized field in event term", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "b375f1b66f444ec13a5d6b0c6968261ac6d67cdb", "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/20260426043006.48113-1-atrajeev@linux.ibm.com/mbox/", "series": [ { "id": 501501, "url": "http://patchwork.ozlabs.org/api/1.1/series/501501/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501501", "date": "2026-04-26T04:30:06", "name": "[V2] tools/perf: Fix the check for parameterized field in event term", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/501501/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2228335/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2228335/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20101-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=F6nXxNSl;\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; 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lists.ozlabs.org;\n dmarc=pass (p=none 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=F6nXxNSl; dkim-atps=neutral;\n spf=pass (client-ip=148.163.156.1; helo=mx0a-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=UbpnkkD17mjRaoD/hBY4G1yToQSHbb1q74evgOmCH\n\ttc=; b=F6nXxNSlkl/OXVDMjOMjQS4lXCb9s3+febEB3V7NL9J5c07lXoxbVzCu+\n\t3rmsC/tR7XiRkaI5l0hDDAH+9Lex56rFMi/zx5giSmxTdDmJrwFF8wxahDLsyMP1\n\tfKdbOGGfYtrLKFxxZdPMcq2TxhfMr2nwb3Irbpjj5dK81FSDol4UA8xVt5+gm422\n\tLHUi2yfjxXV05yWZaNdhAlhsSlMJl8RL5lf4C5peQ2acvl7lwzVH/sBjuaI4p3Mr\n\tRkzhi3qFNquS3PMczeNMKVitdmSJyD+IJAcwlN4lqJbNOKvgyAA085O4hMOBldzu\n\tlJP7n6Bg6qBPF0PYErZZsfuxuApYw==", "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 V2] tools/perf: Fix the check for parameterized field in event\n term", "Date": "Sun, 26 Apr 2026 10:00:06 +0530", "Message-Id": "<20260426043006.48113-1-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-ORIG-GUID": "qXGTHI65qyGxKZWnTTR4wM6lfjFZt84Z", "X-Authority-Analysis": "v=2.4 cv=Ft81OWrq c=1 sm=1 tr=0 ts=69ed94e0 cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=KlCRr-_lrQmZq1rU:21 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8\n a=MfJl6_LkDses9f4lsXYA:9", "X-Proofpoint-GUID": "Mkut2OD8pt8J4TwjODCmICOj1IDEMz7y", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDI2MDA0MSBTYWx0ZWRfX5LwI0sjURNYf\n iBO8r66/cfwkG09UmCxmG5mbXEOohGNXO05oLiOiy9C8KEI6a7nEbCzUHfiKh/KePcjHnRlI05r\n 7eA0frEaTZl+OYCj7wQGwen7B7p44ZUzRAxsE717Z3K4pOnEMlUqSjSOSKDffnWqGmChzxqtx1r\n 1abRkY1FbQY62+HvtnT2RVV5Lsr2OgsAXFKc/kZlgnAl33Kx7LAosNNSb6w3AL4X6OccGlHA/rb\n YdG0S1wl6Myaws8GhaffMbDM8gTPFYT1t+vT4XqtWIl8QVQQ3O80mQUZhlhT7K3sh6KlkYQE0GG\n jnGrvQ65h4FfJrrUZiN0sk0QlL1j7pBAcueaFpWCVUWsabeDKX9tfrvwk5Hoj1eGgBd8Uw/6XJk\n dx0OlYz6Dk9RmwdqwfftOiy+OJ/djNZx/3itbt6tRcxFbJ3DsjZkUc4W4t8euKyVeUczPcsEMYx\n 4RK24GljN0oB6Y4ExRg==", "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 priorityscore=1501 lowpriorityscore=0 bulkscore=0 spamscore=0 impostorscore=0\n clxscore=1015 malwarescore=0 phishscore=0 suspectscore=0 adultscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604260041", "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": "The format_alias() function in util/pmu.c has a check to\ndetect whether the event has parameterized field ( =? ).\nThe string alias->terms contains the event and if the event\nhas user configurable parameter, there will be presence of\nsub string \"=?\" in the alias->terms.\n\nSnippet of code:\n\n /* Paramemterized events have the parameters shown. */\n if (strstr(alias->terms, \"=?\")) {\n /* No parameters. */\n snprintf(buf, len, \"%.*s/%s/\", (int)pmu_name_len, pmu->name, alias->name);\n\nif \"strstr\" contains the substring, it returns a pointer\nand hence enters the above check which is not the expected\ncheck. And hence \"perf list\" doesn't have the parameterized\nfields in the result.\n\nFix this check to use:\n\nif (str_ends_with(alias->terms, \"=?\")) {\n\nWith this change, perf list shows the events correctly with\nthe strings showing parameters.\n\nOther changes in this patch:\n- Replace snprintf with scnprintf in buffer offset calculations to\nensure the 'used' count will not exceed the \"len\"\n- If a parameterized event uses a built-in perf keyword for its\nparameter name (eg, config=?), the lexer parses it as a predefined\nterm token, which sets term->config to NULL. Add check to use\nparse_events__term_type_str() if term->config is NULL\n\nSigned-off-by: Athira Rajeev <atrajeev@linux.ibm.com>\n---\nChangelog:\nv1 -> v2:\nAfter review from Sashiko, added below changes:\nReplace snprintf with scnprintf in buffer offset calculations to\nensure the 'used' count will not exceed the \"len\"\n- If a parameterized event uses a built-in perf keyword for its\nparameter name (eg, config=?), the lexer parses it as a predefined\nterm token, which sets term->config to NULL. Add check to use\nparse_events__term_type_str() if term->config is NULL\n\n tools/perf/util/pmu.c | 14 +++++++++-----\n 1 file changed, 9 insertions(+), 5 deletions(-)", "diff": "diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c\nindex 23337d2fa281..fad7ef4c8e5d 100644\n--- a/tools/perf/util/pmu.c\n+++ b/tools/perf/util/pmu.c\n@@ -2117,7 +2117,7 @@ static char *format_alias(char *buf, int len, const struct perf_pmu *pmu,\n \t\t\t\t\t\t skip_duplicate_pmus);\n \n \t/* Paramemterized events have the parameters shown. */\n-\tif (strstr(alias->terms, \"=?\")) {\n+\tif (!strstr(alias->terms, \"=?\")) {\n \t\t/* No parameters. */\n \t\tsnprintf(buf, len, \"%.*s/%s/\", (int)pmu_name_len, pmu->name, alias->name);\n \t\treturn buf;\n@@ -2129,15 +2129,19 @@ static char *format_alias(char *buf, int len, const struct perf_pmu *pmu,\n \t\tpr_err(\"Failure to parse '%s' terms '%s': %d\\n\",\n \t\t\talias->name, alias->terms, ret);\n \t\tparse_events_terms__exit(&terms);\n-\t\tsnprintf(buf, len, \"%.*s/%s/\", (int)pmu_name_len, pmu->name, alias->name);\n+\t\tscnprintf(buf, len, \"%.*s/%s/\", (int)pmu_name_len, pmu->name, alias->name);\n \t\treturn buf;\n \t}\n-\tused = snprintf(buf, len, \"%.*s/%s\", (int)pmu_name_len, pmu->name, alias->name);\n+\tused = scnprintf(buf, len, \"%.*s/%s\", (int)pmu_name_len, pmu->name, alias->name);\n \n \tlist_for_each_entry(term, &terms.terms, list) {\n+\t\tconst char *name = term->config;\n+\n+\t\tif (!name)\n+\t\t\tname = parse_events__term_type_str(term->type_term);\n \t\tif (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)\n-\t\t\tused += snprintf(buf + used, sub_non_neg(len, used),\n-\t\t\t\t\t\",%s=%s\", term->config,\n+\t\t\tused += scnprintf(buf + used, sub_non_neg(len, used),\n+\t\t\t\t\t\",%s=%s\", name,\n \t\t\t\t\tterm->val.str);\n \t}\n \tparse_events_terms__exit(&terms);\n", "prefixes": [ "V2" ] }