From patchwork Wed Jun 1 08:56:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 9146675 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 128FF6082F for ; Wed, 1 Jun 2016 08:58:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 08F1A1FF60 for ; Wed, 1 Jun 2016 08:58:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F20FA26538; Wed, 1 Jun 2016 08:57:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.9 required=2.0 tests=BAYES_00,FSL_HELO_HOME, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 92984200E7 for ; Wed, 1 Jun 2016 08:57:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932450AbcFAI5x (ORCPT ); Wed, 1 Jun 2016 04:57:53 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:43110 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932409AbcFAI5s (ORCPT ); Wed, 1 Jun 2016 04:57:48 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id u518uxTm020032; Wed, 1 Jun 2016 03:56:59 -0500 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id u518v2ch019957; Wed, 1 Jun 2016 03:57:03 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.294.0; Wed, 1 Jun 2016 03:57:02 -0500 Received: from gomoku.home (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id u518ug0V002676; Wed, 1 Jun 2016 03:57:00 -0500 From: Tero Kristo To: , , , , CC: , , Tero Kristo Subject: [PATCH 06/28] crypto: omap-sham: avoid executing tasklet where not needed Date: Wed, 1 Jun 2016 11:56:07 +0300 Message-ID: <1464771389-10640-7-git-send-email-t-kristo@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464771389-10640-1-git-send-email-t-kristo@ti.com> References: <1464771389-10640-1-git-send-email-t-kristo@ti.com> MIME-Version: 1.0 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some of the call paths of OMAP SHA driver can avoid executing the next step of the crypto queue under tasklet; instead, execute the next step directly via function call. This avoids a costly round-trip via the scheduler giving a slight performance boost. Signed-off-by: Tero Kristo --- drivers/crypto/omap-sham.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index a5c823b..34ebe1d 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -240,6 +240,8 @@ static struct omap_sham_drv sham = { .lock = __SPIN_LOCK_UNLOCKED(sham.lock), }; +static void omap_sham_done_task(unsigned long data); + static inline u32 omap_sham_read(struct omap_sham_dev *dd, u32 offset) { return __raw_readl(dd->io_base + offset); @@ -994,7 +996,7 @@ static void omap_sham_finish_req(struct ahash_request *req, int err) req->base.complete(&req->base, err); /* handle new request */ - tasklet_schedule(&dd->done_task); + omap_sham_done_task((unsigned long)dd); } static int omap_sham_handle_queue(struct omap_sham_dev *dd,