From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ECB04C00140 for ; Fri, 5 Aug 2022 22:12:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=pDOH3hxaOmo3mzsSXJZvaIrK80NMABtRg7lUUPWfEn8=; b=IpOxeLSYri8rIw VPOwh1Kk+3LzKQzdm48lJ8nPZjxXKEleRxX7rthFWQAKkerKu0z19SlpjgBEQ4e//Ps4tWqBn7si+ 5k8XDLVXXCo0moW/lYWC15VVhlK29PyhInkMIPf4K7UoClqV+FNpPGUhUSLRXRmr9iYyzz2u1Dml0 qbLzF5Z0CJjyk81gICWeHrBz/HliKUF8r9OdtOAEYWQSo+6vydKkDjVV4ldgw94NqWkCbdxn9yxpt OnYpLNqlAN/Md+dr9twcQtZYQrJ2IWXasAsE5HjkQnFizvJZVAGz7dTmbcV16pIxT5LtL98s9jcQ9 wVPAYqLS4yN6YYDamq0Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oK5Wh-0016Le-Si; Fri, 05 Aug 2022 22:10:40 +0000 Received: from mail-il1-x12f.google.com ([2607:f8b0:4864:20::12f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oK5HJ-000yKi-QH for linux-arm-kernel@lists.infradead.org; Fri, 05 Aug 2022 21:54:54 +0000 Received: by mail-il1-x12f.google.com with SMTP id d4so1977362ilc.8 for ; Fri, 05 Aug 2022 14:54:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=1y159ZhAT7UwYDHx836NbKz/sH4FGDT0eWA3LtOPK28=; b=aZpGJUfkVtvgVQOcA2F7tAMS9ukLmpQUh3ljHkf8mdLln5qcpZB9sw8JktDUOZUfin xLOZQjWOpSuON3eyAeAu0CbF/36kkedJfxlVb8EilpP8NgwuOHRUROHCZ53wKAtwcHW8 Jeh/gyh1fxpZRMsteWVDc3LGjglz0Koq17XZfoMIqYlbNNK6YVVpFJPTcabGrF+zUxOl 3nDrv09wEZVtUo5DXADv4GIftR4TjYij61T53L1CgmlxQ6y0DTdbSvu7fQFGEmt/3xqZ sWUWbDNbwEpc/QRQVCatjqHnf92fBh0/OP4rLiZSj5g5A76MlyvGpiP8ydfP9zWcgESr ZWSQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=1y159ZhAT7UwYDHx836NbKz/sH4FGDT0eWA3LtOPK28=; b=ITTrkWj8fs4N8WmIf+4hGd0KNhhtWMie0P85JPQ2eMb1RxAW7W9ZXH7bGns2FvbTv8 0/xExMw3zzdWKqmM8a/0712wkFTyLPvZwqCfOXOQaKEyP6UTht11cPcuWQsuEyGeG7BS F1nUOcAumZztDaaw5NFVzfDGEknJX5CI4fnH3DAxnFjn1dHyLZHHQe/0IaSYwWUgz53G 4aDc7ZcDpflkSFTjNIf2anRSi6he+AKCdbkiSAadKIGAq5Rfyb1B7DH2Plz/o4IWCYQU mH2tuWIGpmbO5hrzSktWv0FzFpIMsIx51tL0W+uuNPoGgPZFTXahb2ve/h1tMuZbiaXw zn8Q== X-Gm-Message-State: ACgBeo2XvGq+F458KRmrovjyHvgmzHcZPqrny5dkjn00yggKJdu7SXne VkdEKhDka1Zn3NjymwYd0wc= X-Google-Smtp-Source: AA6agR7d9MaevNi+wYrhfwwaCK505X33v/tWLIHGXSbOGLIz9cTvnFOlWaEafAqO2toexMXLdgER5Q== X-Received: by 2002:a05:6e02:194d:b0:2df:8893:90bb with SMTP id x13-20020a056e02194d00b002df889390bbmr2260522ilu.242.1659736483850; Fri, 05 Aug 2022 14:54:43 -0700 (PDT) Received: from frodo.. (c-73-78-62-130.hsd1.co.comcast.net. [73.78.62.130]) by smtp.googlemail.com with ESMTPSA id e12-20020a056602044c00b0067c09fd0b53sm1765532iov.21.2022.08.05.14.54.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Aug 2022 14:54:43 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org Cc: daniel.vetter@ffwll.ch, seanpaul@chromium.org, robdclark@gmail.com, Jim Cromie Subject: [PATCH v5 21/33] dyndbg: test DECLARE_DYNDBG_CLASSMAP, sysfs nodes Date: Fri, 5 Aug 2022 15:53:43 -0600 Message-Id: <20220805215355.3509287-22-jim.cromie@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220805215355.3509287-1-jim.cromie@gmail.com> References: <20220805215355.3509287-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220805_145452_138519_E59D8481 X-CRM114-Status: GOOD ( 17.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Demonstrate use of DECLARE_DYNDBG_CLASSMAP macro, and expose them as sysfs-nodes for testing. For each of the 4 class-map-types: - declare a class-map of that type, - declare the enum corresponding to those class-names - share _base across 0..30 range - add a __pr_debug_cls() call for each class-name - declare 2 sysnodes for each class-map for 'p' flag, and future 'T' flag These declarations create the following sysfs parameter interface: :#> pwd /sys/module/test_dynamic_debug/parameters :#> ls T_disjoint_bits T_disjoint_names T_level_names T_level_num do_prints p_disjoint_bits p_disjoint_names p_level_names p_level_num NOTES: The local wrapper macro is an api candidate, but there are already too many parameters. OTOH, maybe related enum should be in there too, since it has _base inter-dependencies. The T_* params control the (future) T flag on the same class'd pr_debug callsites as their p* counterparts. Using them will fail, until the dyndbg-trace patches are added in. :#> echo 1 > T_disjoint [ 28.792489] dyndbg: disjoint: 0x1 > test_dynamic_debug.T_D2 [ 28.793848] dyndbg: query 0: "class D2_CORE +T" mod:* [ 28.795086] dyndbg: split into words: "class" "D2_CORE" "+T" [ 28.796467] dyndbg: op='+' [ 28.797148] dyndbg: unknown flag 'T' [ 28.798021] dyndbg: flags parse failed [ 28.798947] dyndbg: processed 1 queries, with 0 matches, 1 errs [ 28.800378] dyndbg: bit_0: -22 matches on class: D2_CORE -> 0x1 [ 28.801959] dyndbg: test_dynamic_debug.T_D2: updated 0x0 -> 0x1 [ 28.803974] dyndbg: total matches: -22 Signed-off-by: Jim Cromie --- lib/test_dynamic_debug.c | 125 ++++++++++++++++++++++++++++++++++----- 1 file changed, 110 insertions(+), 15 deletions(-) diff --git a/lib/test_dynamic_debug.c b/lib/test_dynamic_debug.c index ba3882ca3e48..8dd250ad022b 100644 --- a/lib/test_dynamic_debug.c +++ b/lib/test_dynamic_debug.c @@ -10,57 +10,152 @@ #include -static void do_prints(void); /* device under test */ - -/* run tests by reading or writing sysfs node */ +/* run tests by reading or writing sysfs node: do_prints */ +static void do_prints(void); /* device under test */ static int param_set_do_prints(const char *instr, const struct kernel_param *kp) { do_prints(); return 0; } - static int param_get_do_prints(char *buffer, const struct kernel_param *kp) { do_prints(); return scnprintf(buffer, PAGE_SIZE, "did do_prints\n"); } - static const struct kernel_param_ops param_ops_do_prints = { .set = param_set_do_prints, .get = param_get_do_prints, }; - module_param_cb(do_prints, ¶m_ops_do_prints, NULL, 0600); -static void do_alpha(void) +/* + * Using the CLASSMAP api: + * - classmaps must have corresponding enum + * - enum symbols must match/correlate with class-name strings in the map. + * - base must equal enum's 1st value + * - multiple maps must set their base to share the 0-30 class_id space !! + * (build-bug-on tips welcome) + * Additionally, here: + * - tie together sysname, mapname, bitsname, flagsname + */ +#define DD_SYS_WRAP(_model, _flags) \ + static unsigned long bits_##_model; \ + static struct ddebug_class_param _flags##_model = { \ + .bits = &bits_##_model, \ + .flags = #_flags, \ + .map = &map_##_model, \ + }; \ + module_param_cb(_flags##_##_model, ¶m_ops_dyndbg_classes, &_flags##_model, 0600) + +/* numeric input, independent bits */ +enum cat_disjoint_bits { + D2_CORE = 0, + D2_DRIVER, + D2_KMS, + D2_PRIME, + D2_ATOMIC, + D2_VBL, + D2_STATE, + D2_LEASE, + D2_DP, + D2_DRMRES }; +DECLARE_DYNDBG_CLASSMAP(map_disjoint_bits, DD_CLASS_TYPE_DISJOINT_BITS, 0, + "D2_CORE", + "D2_DRIVER", + "D2_KMS", + "D2_PRIME", + "D2_ATOMIC", + "D2_VBL", + "D2_STATE", + "D2_LEASE", + "D2_DP", + "D2_DRMRES"); +DD_SYS_WRAP(disjoint_bits, p); +DD_SYS_WRAP(disjoint_bits, T); + +/* symbolic input, independent bits */ +enum cat_disjoint_names { LOW = 11, MID, HI }; +DECLARE_DYNDBG_CLASSMAP(map_disjoint_names, DD_CLASS_TYPE_DISJOINT_NAMES, 10, + "LOW", "MID", "HI"); +DD_SYS_WRAP(disjoint_names, p); +DD_SYS_WRAP(disjoint_names, T); + +/* numeric verbosity, V2 > V1 related */ +enum cat_level_num { V0 = 14, V1, V2, V3, V4, V5, V6, V7 }; +DECLARE_DYNDBG_CLASSMAP(map_level_num, DD_CLASS_TYPE_LEVEL_NUM, 14, + "V0", "V1", "V2", "V3", "V4", "V5", "V6", "V7"); +DD_SYS_WRAP(level_num, p); +DD_SYS_WRAP(level_num, T); + +/* symbolic verbosity */ +enum cat_level_names { L0 = 22, L1, L2, L3, L4, L5, L6, L7 }; +DECLARE_DYNDBG_CLASSMAP(map_level_names, DD_CLASS_TYPE_LEVEL_NAMES, 22, + "L0", "L1", "L2", "L3", "L4", "L5", "L6", "L7"); +DD_SYS_WRAP(level_names, p); +DD_SYS_WRAP(level_names, T); + +/* stand-in for all pr_debug etc */ +#define prdbg(SYM) __pr_debug_cls(SYM, #SYM " msg\n") + +static void do_cats(void) { - pr_debug("do alpha\n"); + pr_debug("doing categories\n"); + + prdbg(LOW); + prdbg(MID); + prdbg(HI); + + prdbg(D2_CORE); + prdbg(D2_DRIVER); + prdbg(D2_KMS); + prdbg(D2_PRIME); + prdbg(D2_ATOMIC); + prdbg(D2_VBL); + prdbg(D2_STATE); + prdbg(D2_LEASE); + prdbg(D2_DP); + prdbg(D2_DRMRES); } -static void do_beta(void) + +static void do_levels(void) { - pr_debug("do beta\n"); + pr_debug("doing levels\n"); + + prdbg(V1); + prdbg(V2); + prdbg(V3); + prdbg(V4); + prdbg(V5); + prdbg(V6); + prdbg(V7); + + prdbg(L1); + prdbg(L2); + prdbg(L3); + prdbg(L4); + prdbg(L5); + prdbg(L6); + prdbg(L7); } static void do_prints(void) { - do_alpha(); - do_beta(); + do_cats(); + do_levels(); } static int __init test_dynamic_debug_init(void) { pr_debug("init start\n"); - do_prints(); - pr_debug("init done\n"); return 0; } static void __exit test_dynamic_debug_exit(void) { - pr_debug("exiting\n"); + pr_debug("exited\n"); } module_init(test_dynamic_debug_init); -- 2.37.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel