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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC0DAC43387 for ; Tue, 8 Jan 2019 12:09:24 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A1B1920651 for ; Tue, 8 Jan 2019 12:09:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A1B1920651 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43YrfB3fvQzDqRx for ; Tue, 8 Jan 2019 23:09:22 +1100 (AEDT) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43YrYG0bjNzDqPm for ; Tue, 8 Jan 2019 23:05:06 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix) id 43YrYF6gGZz9sMM; Tue, 8 Jan 2019 23:05:05 +1100 (AEDT) Received: by ozlabs.org (Postfix, from userid 1034) id 43YrYF5tYyz9sN8; Tue, 8 Jan 2019 23:05:05 +1100 (AEDT) From: Michael Ellerman To: linuxppc-dev@ozlabs.org Subject: [PATCH 2/2] powerpc: Show PAGE_SIZE in __die() output Date: Tue, 8 Jan 2019 23:05:00 +1100 Message-Id: <20190108120500.2547-2-mpe@ellerman.id.au> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190108120500.2547-1-mpe@ellerman.id.au> References: <20190108120500.2547-1-mpe@ellerman.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The page size the kernel is built with is useful info when debugging a crash, so add it to the output in __die(). Result looks like eg: kernel BUG at drivers/misc/lkdtm/bugs.c:63! Oops: Exception in kernel mode, sig: 5 [#1] LE PAGE_SIZE=64K SMP NR_CPUS=2048 NUMA pSeries Modules linked in: vmx_crypto kvm binfmt_misc ip_tables Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/traps.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 431a86d3f772..fc972e4eee5f 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -268,6 +268,18 @@ static int __die(const char *str, struct pt_regs *regs, long err) else seq_buf_puts(&s, "BE "); + seq_buf_puts(&s, "PAGE_SIZE="); + if (IS_ENABLED(CONFIG_PPC_4K_PAGES)) + seq_buf_puts(&s, "4K "); + else if (IS_ENABLED(CONFIG_PPC_16K_PAGES)) + seq_buf_puts(&s, "16K "); + else if (IS_ENABLED(CONFIG_PPC_64K_PAGES)) + seq_buf_puts(&s, "64K "); + else if (IS_ENABLED(CONFIG_PPC_256K_PAGES)) + seq_buf_puts(&s, "256K "); + else + BUILD_BUG_ON(1); + if (IS_ENABLED(CONFIG_PREEMPT)) seq_buf_puts(&s, "PREEMPT "); -- 2.20.1