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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 526E3CCA47B for ; Tue, 14 Jun 2022 02:15:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353159AbiFNCP5 (ORCPT ); Mon, 13 Jun 2022 22:15:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354030AbiFNCOP (ORCPT ); Mon, 13 Jun 2022 22:14:15 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAE8B3B2AB; Mon, 13 Jun 2022 19:08:24 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 338E8B816BB; Tue, 14 Jun 2022 02:08:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 520C7C36AFE; Tue, 14 Jun 2022 02:08:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655172501; bh=Zzb5/gr7v+HM61U+99KSrd0cawCpe1xPsCdEb4c6n2Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MQT7QPvqsFfxj9oQGvj6bznGfcdzrQMrdYP4gDzHui6w1+mKHK8d3zP3DcE1j3ao2 luzNHidsMiLVCCT9HMTLmP83qsPczGJhqsHQgT39z45AVfnot0Sz6aNe7xD1yzel9C Pjj6QMMAqVV2iFeeLxlmVyr/WZbko3DCme5EDC/cu0VrkwsuHDJbDIgKlfMs8OIths sTt3ItxDyrXkEYhVEx9s8NAbNbUQYwPbmLwgg+TjJRL4LkLff6R8qvLNb29894y1aV bOUOILPVAMuRg15d6TWZg3qx5L/hqXdB9BjZb3DY9cbR1srM4mlS0Kk9OpZ1d/p/oR Nqx85SZlFXY7Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Rob Clark , Christoph Hellwig , Sasha Levin Subject: [PATCH AUTOSEL 5.10 03/29] dma-debug: make things less spammy under memory pressure Date: Mon, 13 Jun 2022 22:07:49 -0400 Message-Id: <20220614020815.1099999-3-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220614020815.1099999-1-sashal@kernel.org> References: <20220614020815.1099999-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Rob Clark [ Upstream commit e19f8fa6ce1ca9b8b934ba7d2e8f34c95abc6e60 ] Limit the error msg to avoid flooding the console. If you have a lot of threads hitting this at once, they could have already gotten passed the dma_debug_disabled() check before they get to the point of allocation failure, resulting in quite a lot of this error message spamming the log. Use pr_err_once() to limit that. Signed-off-by: Rob Clark Signed-off-by: Christoph Hellwig Signed-off-by: Sasha Levin --- kernel/dma/debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index ee7da1f2462f..ae9fc1ee6d20 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -564,7 +564,7 @@ static void add_dma_entry(struct dma_debug_entry *entry) rc = active_cacheline_insert(entry); if (rc == -ENOMEM) { - pr_err("cacheline tracking ENOMEM, dma-debug disabled\n"); + pr_err_once("cacheline tracking ENOMEM, dma-debug disabled\n"); global_disable = true; } -- 2.35.1