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,URIBL_BLOCKED, 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 6E3B8C282C4 for ; Thu, 7 Feb 2019 12:47:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4761721916 for ; Thu, 7 Feb 2019 12:47:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727253AbfBGMrM (ORCPT ); Thu, 7 Feb 2019 07:47:12 -0500 Received: from ozlabs.org ([203.11.71.1]:49295 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726843AbfBGMqz (ORCPT ); Thu, 7 Feb 2019 07:46:55 -0500 Received: by ozlabs.org (Postfix, from userid 1034) id 43wJ3d3ww0z9sN6; Thu, 7 Feb 2019 23:46:53 +1100 (AEDT) From: Michael Ellerman To: linuxppc-dev@ozlabs.org Cc: akpm@linux-foundation.org, tj@kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, dyoung@redhat.com, sergey.senozhatsky@gmail.com, pmladek@suse.com Subject: [PATCH v3 4/7] powerpc: Add device-tree model to dump stack arch description Date: Thu, 7 Feb 2019 23:46:32 +1100 Message-Id: <20190207124635.3885-4-mpe@ellerman.id.au> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190207124635.3885-1-mpe@ellerman.id.au> References: <20190207124635.3885-1-mpe@ellerman.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As soon as we know the model of the machine we're on, add it to the dump stack arch description, which is printed in case of an oops. eg: Hardware name: model:'IBM,8247-22L' Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/prom.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 38a90097469a..70af26a1eedd 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include @@ -687,6 +688,23 @@ static void __init tm_init(void) static void tm_init(void) { } #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ +static int __init +early_init_dt_scan_model(unsigned long node, const char *uname, + int depth, void *data) +{ + const char *prop; + + if (depth != 0) + return 0; + + prop = of_get_flat_dt_prop(node, "model", NULL); + if (prop) + dump_stack_add_arch_desc("model:'%s'", prop); + + /* break now */ + return 1; +} + void __init early_init_devtree(void *params) { phys_addr_t limit; @@ -697,6 +715,8 @@ void __init early_init_devtree(void *params) if (!early_init_dt_verify(params)) panic("BUG: Failed verifying flat device tree, bad version?"); + of_scan_flat_dt(early_init_dt_scan_model, NULL); + #ifdef CONFIG_PPC_RTAS /* Some machines might need RTAS info for debugging, grab it now. */ of_scan_flat_dt(early_init_dt_scan_rtas, NULL); -- 2.20.1