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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 971F3C433B4 for ; Tue, 20 Apr 2021 08:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 66963611C9 for ; Tue, 20 Apr 2021 08:23:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230514AbhDTIXZ (ORCPT ); Tue, 20 Apr 2021 04:23:25 -0400 Received: from jptosegrel01.sonyericsson.com ([124.215.201.71]:7263 "EHLO JPTOSEGREL01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229749AbhDTIXY (ORCPT ); Tue, 20 Apr 2021 04:23:24 -0400 From: Peter Enderborg To: , , Sumit Semwal , =?UTF-8?q?Christian=20K=C3=B6nig?= , Alexey Dobriyan , Andrew Morton , Muchun Song , Roman Gushchin , Shakeel Butt , Michal Hocko , NeilBrown , Sami Tolvanen , Mike Rapoport , , , , Matthew Wilcox , Jonathan Corbet , Randy Dunlap , Kees Cook , Mauro Carvalho Chehab , Alexey Gladkov , Feng Tang , CC: Peter Enderborg Subject: [PATCH 2/2 V6] lib/show_mem.c: Add dma-buf counter to show_mem dump. Date: Tue, 20 Apr 2021 10:22:20 +0200 Message-ID: <20210420082220.7402-3-peter.enderborg@sony.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210420082220.7402-1-peter.enderborg@sony.com> References: <20210420082220.7402-1-peter.enderborg@sony.com> MIME-Version: 1.0 Content-Type: text/plain X-SEG-SpamProfiler-Analysis: v=2.3 cv=DLnxHBFb c=1 sm=1 tr=0 a=fZcToFWbXLKijqHhjJ02CA==:117 a=3YhXtTcJ-WEA:10 a=iox4zFpeAAAA:8 a=z6gsHLkEAAAA:8 a=BIgLedd4eyWhQ11BBNUA:9 a=WzC6qhA0u3u7Ye7llzcV:22 a=d-OLMTCWyvARjPbQ-enb:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=jd6J4Gguk5HxikPWLKER:22 X-SEG-SpamProfiler-Score: 0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On system where dma-buf is used it can be many clients that adds up to a lot of memory. This can be relevant for OOM handling when running out of memory or how system handle this memory. It may be to free with a kill. Suggested-by: Michal Hocko Signed-off-by: Peter Enderborg --- lib/show_mem.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/show_mem.c b/lib/show_mem.c index 1c26c14ffbb9..ec4748c64353 100644 --- a/lib/show_mem.c +++ b/lib/show_mem.c @@ -7,6 +7,7 @@ #include #include +#include void show_mem(unsigned int filter, nodemask_t *nodemask) { @@ -41,4 +42,8 @@ void show_mem(unsigned int filter, nodemask_t *nodemask) #ifdef CONFIG_MEMORY_FAILURE printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages)); #endif +#ifdef CONFIG_DMA_SHARED_BUFFER + printk("%lu pages dma-buf\n", dma_buf_allocated_pages()); +#endif + } -- 2.17.1