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 BA392C54EBD for ; Tue, 3 Jan 2023 16:35:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238013AbjACQfY (ORCPT ); Tue, 3 Jan 2023 11:35:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238123AbjACQfS (ORCPT ); Tue, 3 Jan 2023 11:35:18 -0500 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4A52A6370 for ; Tue, 3 Jan 2023 08:35:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1672763718; x=1704299718; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CLUXsFE5EVP8Q5PfXafyc3Q8oQLrvadR0wo4A8ARGrw=; b=abpCbURcABG3QrtFPplVDjyj71JcN9KJMUda5oN0ph+1SwCeMoyzhNWw k5FafKbTQlAqOsWEjxESSfzd9uDmLKRWaB627IAcQ0qLI0gTsFls7f4Ju XpxaKl3fvCcl06QCjJM3EbRS0G8kWndfJ6EDPfdRhHvEdpCuAXktIYHLW GptB80/iyOk5x+4e66Mi73Ex1cdWQkoG1BZEvMkjWzgkQUz7YG9S8/l6q 2scNbl0h7TRlvpskH95A81QHN0BL1v4nfOW3lKR6F/f0fQPzAg+mZwHwu poYvV8s2ZAOGjJ7jaRDdM537a+FQ6L+ULDrUmjOeVpZvXxZlJRloXOTI9 A==; X-IronPort-AV: E=McAfee;i="6500,9779,10579"; a="302072315" X-IronPort-AV: E=Sophos;i="5.96,297,1665471600"; d="scan'208";a="302072315" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jan 2023 08:35:13 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10579"; a="604858504" X-IronPort-AV: E=Sophos;i="5.96,297,1665471600"; d="scan'208";a="604858504" Received: from fyu1.sc.intel.com ([172.25.103.126]) by orsmga003.jf.intel.com with ESMTP; 03 Jan 2023 08:35:13 -0800 From: Fenghua Yu To: "Vinod Koul" , "Dave Jiang" Cc: "Fenghua Yu" , dmaengine@vger.kernel.org, Tony Zhu Subject: [PATCH 07/17] dmaengine: idxd: create kmem cache for event log fault items Date: Tue, 3 Jan 2023 08:34:55 -0800 Message-Id: <20230103163505.1569356-8-fenghua.yu@intel.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230103163505.1569356-1-fenghua.yu@intel.com> References: <20230103163505.1569356-1-fenghua.yu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org From: Dave Jiang Add a kmem cache per device for allocating event log fault context. The context allows an event log entry to be copied and passed to a software workqueue to be processed. Due to each device can have different sized event log entry depending on device type, it's not possible to have a global kmem cache. Tested-by: Tony Zhu Signed-off-by: Dave Jiang Co-developed-by: Fenghua Yu Signed-off-by: Fenghua Yu --- drivers/dma/idxd/idxd.h | 10 ++++++++++ drivers/dma/idxd/init.c | 9 +++++++++ drivers/dma/idxd/sysfs.c | 1 + 3 files changed, 20 insertions(+) diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 3f182540b040..b4fa1051a482 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -273,6 +273,15 @@ struct idxd_evl { u16 head; }; +struct idxd_evl_fault { + struct work_struct work; + struct idxd_wq *wq; + u8 status; + + /* make this last member always */ + struct __evl_entry entry[]; +}; + struct idxd_device { struct idxd_dev idxd_dev; struct idxd_driver_data *data; @@ -330,6 +339,7 @@ struct idxd_device { unsigned long *opcap_bmap; struct idxd_evl *evl; + struct kmem_cache *evl_cache; struct dentry *dbgfs_dir; struct dentry *dbgfs_evl_file; diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c index 9a5ab223d8ac..74d6a12d4bd3 100644 --- a/drivers/dma/idxd/init.c +++ b/drivers/dma/idxd/init.c @@ -341,6 +341,15 @@ static int idxd_init_evl(struct idxd_device *idxd) spin_lock_init(&evl->lock); evl->size = IDXD_EVL_SIZE_MIN; + + idxd->evl_cache = kmem_cache_create(dev_name(idxd_confdev(idxd)), + sizeof(struct idxd_evl_fault) + evl_ent_size(idxd), + 0, 0, NULL); + if (!idxd->evl_cache) { + kfree(evl); + return -ENOMEM; + } + idxd->evl = evl; return 0; } diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 3e8c4ecd40ee..ea696e3c5680 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -1696,6 +1696,7 @@ static void idxd_conf_device_release(struct device *dev) kfree(idxd->wqs); kfree(idxd->engines); kfree(idxd->evl); + kmem_cache_destroy(idxd->evl_cache); ida_free(&idxd_ida, idxd->id); bitmap_free(idxd->opcap_bmap); kfree(idxd); -- 2.32.0