From patchwork Mon Aug 9 22:29:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 12427427 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B0354C4338F for ; Mon, 9 Aug 2021 22:29:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C09460EB5 for ; Mon, 9 Aug 2021 22:29:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236706AbhHIW3f (ORCPT ); Mon, 9 Aug 2021 18:29:35 -0400 Received: from mga01.intel.com ([192.55.52.88]:54463 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236646AbhHIW3e (ORCPT ); Mon, 9 Aug 2021 18:29:34 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10070"; a="236796816" X-IronPort-AV: E=Sophos;i="5.84,308,1620716400"; d="scan'208";a="236796816" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Aug 2021 15:29:13 -0700 X-IronPort-AV: E=Sophos;i="5.84,308,1620716400"; d="scan'208";a="421000208" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.25]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Aug 2021 15:29:13 -0700 Subject: [PATCH 16/23] cxl/mbox: Convert 'enabled_cmds' to DECLARE_BITMAP From: Dan Williams To: linux-cxl@vger.kernel.org Cc: nvdimm@lists.linux.dev, Jonathan.Cameron@huawei.com, ben.widawsky@intel.com, vishal.l.verma@intel.com, alison.schofield@intel.com, ira.weiny@intel.com Date: Mon, 09 Aug 2021 15:29:13 -0700 Message-ID: <162854815299.1980150.3524640653829717905.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <162854806653.1980150.3354618413963083778.stgit@dwillia2-desk3.amr.corp.intel.com> References: <162854806653.1980150.3354618413963083778.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-3-g996c MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org Define enabled_cmds as an embedded member of 'struct cxl_mem' rather than a pointer to another dynamic allocation. As this leaves only one user of cxl_cmd_count, just open code it and delete the helper. Signed-off-by: Dan Williams --- drivers/cxl/core/mbox.c | 10 +--------- drivers/cxl/cxlmem.h | 2 +- 2 files changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index 40f051956990..23100231e246 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -322,8 +322,6 @@ static int cxl_validate_cmd_from_user(struct cxl_mem *cxlm, return 0; } -#define cxl_cmd_count ARRAY_SIZE(cxl_mem_commands) - int cxl_query_cmd(struct cxl_memdev *cxlmd, struct cxl_mem_query_commands __user *q) { @@ -339,7 +337,7 @@ int cxl_query_cmd(struct cxl_memdev *cxlmd, /* returns the total number if 0 elements are requested. */ if (n_commands == 0) - return put_user(cxl_cmd_count, &q->n_commands); + return put_user(ARRAY_SIZE(cxl_mem_commands), &q->n_commands); /* * otherwise, return max(n_commands, total commands) cxl_command_info @@ -803,12 +801,6 @@ struct cxl_mem *cxl_mem_create(struct device *dev) mutex_init(&cxlm->mbox_mutex); cxlm->dev = dev; - cxlm->enabled_cmds = - devm_kmalloc_array(dev, BITS_TO_LONGS(cxl_cmd_count), - sizeof(unsigned long), - GFP_KERNEL | __GFP_ZERO); - if (!cxlm->enabled_cmds) - return ERR_PTR(-ENOMEM); return cxlm; } diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index b7122ded3a04..df4f3636a999 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -116,7 +116,7 @@ struct cxl_mem { size_t lsa_size; struct mutex mbox_mutex; /* Protects device mailbox and firmware */ char firmware_version[0x10]; - unsigned long *enabled_cmds; + DECLARE_BITMAP(enabled_cmds, CXL_MEM_COMMAND_ID_MAX); struct range pmem_range; struct range ram_range;