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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 882FCC2D0A3 for ; Wed, 4 Nov 2020 14:10:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 216DF221E2 for ; Wed, 4 Nov 2020 14:10:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604499032; bh=+zBhNR2Wm8IM2KCWPh9z8PAhDKFAiYNN/WyDPKfg+R8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Nu6ft8RuBKrlAXGyHJusGewoBx1mYJfUXu1CRruxNG5VL7bPDpvNT++R3pdNY+ei/ EBzILSmJ5/+5dJDl0XrYl5RYyDTVvu3t1zYO+CJYtFkXmLU2ZSgx4VXGga1Rig7SXu X7Z6eXbOj6TsQUVlW0aK5Bcww4GWhl+9FY9sFXRw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730328AbgKDOKa (ORCPT ); Wed, 4 Nov 2020 09:10:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:37586 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726729AbgKDOJW (ORCPT ); Wed, 4 Nov 2020 09:09:22 -0500 Received: from ogabbay-VM.habana-labs.com (unknown [213.57.90.10]) (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 D3B8C22280; Wed, 4 Nov 2020 14:09:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604498960; bh=+zBhNR2Wm8IM2KCWPh9z8PAhDKFAiYNN/WyDPKfg+R8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vojoSlYNc1IS3OXxhP8r23UdL2wrvBlfw4hVC0+miDg4Xdhqr7eaAEa9KZ0bfjPgv Pg7DGGBcGmAeS4Zkd4S1dDShLMIJ/FcDIQxcpLbIqU625mjEq+IezbXaqLkZw/MKJO zTy5MMV/6uB1UqhqOYTaggD9btOj+0Pi0PcAGY0U= From: Oded Gabbay To: linux-kernel@vger.kernel.org Cc: SW_Drivers@habana.ai Subject: [PATCH] habanalabs/gaudi: increase MAX CS to 16K Date: Wed, 4 Nov 2020 16:08:59 +0200 Message-Id: <20201104140908.10178-3-ogabbay@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201104140908.10178-1-ogabbay@kernel.org> References: <20201104140908.10178-1-ogabbay@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We need to have the MAX CS be much larger than the size of the different queues. In GAUDI we have around 8 groups of queues, and each group has 1K queue size. To prevent head-of-the-line blocking, we need to make sure there is sufficient number of available CS allocations even if one or more of those queues are full. Signed-off-by: Oded Gabbay --- drivers/misc/habanalabs/gaudi/gaudiP.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/habanalabs/gaudi/gaudiP.h b/drivers/misc/habanalabs/gaudi/gaudiP.h index 1dcf7c41e698..c3c24e8da4e2 100644 --- a/drivers/misc/habanalabs/gaudi/gaudiP.h +++ b/drivers/misc/habanalabs/gaudi/gaudiP.h @@ -60,7 +60,7 @@ #define GAUDI_DEFAULT_CARD_NAME "HL2000" -#define GAUDI_MAX_PENDING_CS 1024 +#define GAUDI_MAX_PENDING_CS SZ_16K #if !IS_MAX_PENDING_CS_VALID(GAUDI_MAX_PENDING_CS) #error "GAUDI_MAX_PENDING_CS must be power of 2 and greater than 1" -- 2.17.1