From patchwork Tue Mar 12 17:03:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guenter Roeck X-Patchwork-Id: 13590382 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 6A216C54E68 for ; Tue, 12 Mar 2024 17:03:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F1FB0112F3A; Tue, 12 Mar 2024 17:03:40 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="HoscBxAy"; dkim-atps=neutral Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) by gabe.freedesktop.org (Postfix) with ESMTPS id 64926112F34 for ; Tue, 12 Mar 2024 17:03:39 +0000 (UTC) Received: by mail-pl1-f173.google.com with SMTP id d9443c01a7336-1d944e8f367so1243205ad.0 for ; Tue, 12 Mar 2024 10:03:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1710263019; x=1710867819; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc:subject:date :message-id:reply-to; bh=UNfBGF7ZRB5gRY5ju3ZTnVyluuI6d4pIMWMvwwDFCuc=; b=HoscBxAyHP8c9DhCVQ4As0XgTHSnz3ERQcZWewCzvuDHdbmDYd4b2uGhYpWm98kTcS 4Icdziocofc6NltlS3xzVdMIbWwyq+RZ2h2ltMbhAkrsyHjrbgFP42Mdl0v6AMDrgTUL eCELLZaun0nya/ZsDKR77rwv+nkQsg7DfLRXA6AZioMNkxhFWr2d1flreiOKTfZ+RDd/ HcgnxDzKcJTKghL4Zd9AWrYrBTic0Bpyxd8NBPm3fH1ztwbWNHNbbBZhgrigv0t9u+7J D6FydchurkC+H6HyFuea0I+AKS9SaxNcg5F9Dhn24zd7FM+AYPmLHh7OGlPh1I699ANb sQ9A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710263019; x=1710867819; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=UNfBGF7ZRB5gRY5ju3ZTnVyluuI6d4pIMWMvwwDFCuc=; b=bCo+N+fbkYodJxISVkAEQiIi5tfKwDSyQMQDXp1IxfXiGGmt1sWtasYmw9iBt8Qnig dxWDcrdQagRhljBVRzZnQaGw6FtM71/HzH/1tcBbVaKrG3JzK2pZvtFX6+Q7vMjtBmH5 p7JjPdNFedJiNZuxoRE/RlncVEGzl1Vg5xKZ6XHSc4nkmAa7HiuW07CxN6QK7QpfX1dx xgou2xFa2YK5+NfX23gzXGuMXtLAd+iTNzAN8NESelVb/m+qq83Fzyu8gUp1eJP//+7O uDOKNZedoayH2pNeW1XvhiBEZk32BoO22J0XTvR5MBKJYK1udUSCttm1oC1QJYRZh5PY jmsg== X-Forwarded-Encrypted: i=1; AJvYcCUT1cePGwXe9Am+yBQ4g2ockA1UkYv8WgJgZEGjpLZ/wkPJecelbZ0di+32j4dPHwjKh/AXY/XeZ9BFoxy1fBVu4TxCbtbJCCWyduT/dH7J X-Gm-Message-State: AOJu0Yz5vr4sdejQ9ckvTdWEIUfQEfJjyKFW0s3ui8WCl+HGQAq320ms P3uxjkdh+qOYhJQa8U5MLOBlmKCJXJJLMXKZBfsjkkA1BqbPzwkR X-Google-Smtp-Source: AGHT+IGjcPO5G+GnCGVDj4Jcw0R4zzS4LNLUn52exaX20Pa+MrIRq7GoxtzdXir/jkag847FtE7VIQ== X-Received: by 2002:a17:902:cec8:b0:1dd:7d6a:de4f with SMTP id d8-20020a170902cec800b001dd7d6ade4fmr939106plg.2.1710263018703; Tue, 12 Mar 2024 10:03:38 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id k17-20020a170902c41100b001d9edac54b1sm6398555plk.171.2024.03.12.10.03.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Mar 2024 10:03:38 -0700 (PDT) From: Guenter Roeck To: linux-kselftest@vger.kernel.org Cc: David Airlie , Arnd Bergmann , =?utf-8?q?Ma=C3=ADra_Canal?= , Dan Carpenter , Kees Cook , Daniel Diaz , David Gow , Arthur Grillo , Brendan Higgins , Naresh Kamboju , Maarten Lankhorst , Andrew Morton , Maxime Ripard , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , Daniel Vetter , Thomas Zimmermann , dri-devel@lists.freedesktop.org, kunit-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, loongarch@lists.linux.dev, netdev@lists.linux.dev, Guenter Roeck Subject: [PATCH 11/14] s390: Add support for suppressing warning backtraces Date: Tue, 12 Mar 2024 10:03:06 -0700 Message-Id: <20240312170309.2546362-12-linux@roeck-us.net> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240312170309.2546362-1-linux@roeck-us.net> References: <20240312170309.2546362-1-linux@roeck-us.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add name of functions triggering warning backtraces to the __bug_table object section to enable support for suppressing WARNING backtraces. To limit image size impact, the pointer to the function name is only added to the __bug_table section if both CONFIG_KUNIT and CONFIG_DEBUG_BUGVERBOSE are enabled. Otherwise, the __func__ assembly parameter is replaced with a (dummy) NULL parameter to avoid an image size increase due to unused __func__ entries (this is necessary because __func__ is not a define but a virtual variable). Signed-off-by: Guenter Roeck --- arch/s390/include/asm/bug.h | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h index aebe1e22c7be..01e2aa4069d7 100644 --- a/arch/s390/include/asm/bug.h +++ b/arch/s390/include/asm/bug.h @@ -8,19 +8,30 @@ #ifdef CONFIG_DEBUG_BUGVERBOSE +#if IS_ENABLED(CONFIG_KUNIT) +# define HAVE_BUG_FUNCTION +# define __BUG_FUNC_PTR " .long %0-.\n" +# define __BUG_FUNC __func__ +#else +# define __BUG_FUNC_PTR +# define __BUG_FUNC NULL +#endif /* IS_ENABLED(CONFIG_KUNIT) */ + #define __EMIT_BUG(x) do { \ asm_inline volatile( \ "0: mc 0,0\n" \ ".section .rodata.str,\"aMS\",@progbits,1\n" \ "1: .asciz \""__FILE__"\"\n" \ ".previous\n" \ - ".section __bug_table,\"awM\",@progbits,%2\n" \ + ".section __bug_table,\"awM\",@progbits,%3\n" \ "2: .long 0b-.\n" \ " .long 1b-.\n" \ - " .short %0,%1\n" \ - " .org 2b+%2\n" \ + __BUG_FUNC_PTR \ + " .short %1,%2\n" \ + " .org 2b+%3\n" \ ".previous\n" \ - : : "i" (__LINE__), \ + : : "i" (__BUG_FUNC), \ + "i" (__LINE__), \ "i" (x), \ "i" (sizeof(struct bug_entry))); \ } while (0)