[{"id":3687048,"web_url":"http://patchwork.ozlabs.org/comment/3687048/","msgid":"<20260506124737.3866-1-linuxtestproject.agent@gmail.com>","list_archive_url":null,"date":"2026-05-06T12:47:37","subject":"Re: [LTP] cpufreq.c: add new test for cpufreq sysfs interface\n validation","submitter":{"id":93132,"url":"http://patchwork.ozlabs.org/api/people/93132/","name":null,"email":"linuxtestproject.agent@gmail.com"},"content":"Hi Piotr,\n\nOn Wed, 6 May 2026, Piotr Kubaj wrote:\n> cpufreq.c: add new test for cpufreq sysfs interface validation\n\n> +\ttst_res(TDEBUG, \"Checking whether scaling_available_governors contains \\\"performance\\\" and \\\"schedutil\\\" after switching /sys/devices/system/cpu/intel_pstate/status to \\\"passive\\\"\");\n> +\tsnprintf(path, sizeof(path), \"/sys/devices/system/cpu/intel_pstate/status\");\n> +\tSAFE_FILE_PRINTF(path, \"passive\");\n> +\n> +\tfor (int i = 0; i < nproc; i++) {\n> +\t\t...\n> +\t\tSAFE_FILE_PRINTF(path, \"schedutil\");\n> +\t\t...\n> +\t}\n> +}\n\nrun() exits with intel_pstate/status still \"passive\" and each CPU's\nscaling_governor still \"schedutil\". On the second iteration (-i 2) the\nstatus check fires TFAIL immediately, and the governor branch hits\ntst_brk(TBROK, \"Unknown scaling_governor: schedutil\").\n\nRestore the status to \"active\" and the governors to previous_scaling_governor[i]\nat the end of run() before it returns.\n\n[...]\n\n---\nNote:\n\nOur agent completed the review of the patch. The full review can be\nfound at: https://patchwork.ozlabs.org/project/ltp/list/?series=502943\n\nThe agent can sometimes produce false positives although often its\nfindings are genuine. If you find issues with the review, please\ncomment this email or ignore the suggestions.\n\nRegards,\nLTP AI Reviewer","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=mi3s93lQ;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g9Zst0Z0Hz1y04\n\tfor ; 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