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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 5F45AC47253 for ; Thu, 30 Apr 2020 14:09:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E9B32063A for ; Thu, 30 Apr 2020 14:09:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588255758; bh=ObJKmAMaZ90P/+jAoEDbax6JYZEb2gDqjGuVWUG7W7g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xD5pnO0ljXq2Qbbnvv7Dhfl3jaJgA9sUWompeIqYxZcEr2W14kyM5AM8cpOCKYZVE bYcpgLoX7gmPvrG7kgHhLNSn56yLrF5CwrKF7/aFGfkSg3Yq3fXIva+7rMwjlfbP9f CgJa6uRsKRrRYY8CZvkcEgv4naeQpzaGB8rxM3/k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728232AbgD3Nvy (ORCPT ); Thu, 30 Apr 2020 09:51:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:60140 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728137AbgD3Nvj (ORCPT ); Thu, 30 Apr 2020 09:51:39 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F319824961; Thu, 30 Apr 2020 13:51:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588254698; bh=ObJKmAMaZ90P/+jAoEDbax6JYZEb2gDqjGuVWUG7W7g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hTUpHIfN/ew4mt2SDGfC/SJnZQK/Q6WYo2f4PRW3bOkkQCS/d3etn81CETJj3JUbR 8ChD9ci3B9WOG4My1Q6Jx/t3Z5TUcuS5aZpupUyS6QclLdNB0PO5TbfrW9GI7pWeIr RyDzmcoEG4YVZTsTlwSgX4yBx1vIaulxn4IeWckw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Niklas Schnelle , Saeed Mahameed , Sasha Levin , netdev@vger.kernel.org, linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 5.6 48/79] net/mlx5: Fix failing fw tracer allocation on s390 Date: Thu, 30 Apr 2020 09:50:12 -0400 Message-Id: <20200430135043.19851-48-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200430135043.19851-1-sashal@kernel.org> References: <20200430135043.19851-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Niklas Schnelle [ Upstream commit a019b36123aec9700b21ae0724710f62928a8bc1 ] On s390 FORCE_MAX_ZONEORDER is 9 instead of 11, thus a larger kzalloc() allocation as done for the firmware tracer will always fail. Looking at mlx5_fw_tracer_save_trace(), it is actually the driver itself that copies the debug data into the trace array and there is no need for the allocation to be contiguous in physical memory. We can therefor use kvzalloc() instead of kzalloc() and get rid of the large contiguous allcoation. Fixes: f53aaa31cce7 ("net/mlx5: FW tracer, implement tracer logic") Signed-off-by: Niklas Schnelle Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c index 94d7b69a95c74..eb2e57ff08a60 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c @@ -935,7 +935,7 @@ struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev) return NULL; } - tracer = kzalloc(sizeof(*tracer), GFP_KERNEL); + tracer = kvzalloc(sizeof(*tracer), GFP_KERNEL); if (!tracer) return ERR_PTR(-ENOMEM); @@ -982,7 +982,7 @@ destroy_workqueue: tracer->dev = NULL; destroy_workqueue(tracer->work_queue); free_tracer: - kfree(tracer); + kvfree(tracer); return ERR_PTR(err); } @@ -1061,7 +1061,7 @@ void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer) mlx5_fw_tracer_destroy_log_buf(tracer); flush_workqueue(tracer->work_queue); destroy_workqueue(tracer->work_queue); - kfree(tracer); + kvfree(tracer); } static int fw_tracer_event(struct notifier_block *nb, unsigned long action, void *data) -- 2.20.1