From patchwork Tue Oct 27 22:54:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 1389023 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=0GnEbZql; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=LsJR1NJ1; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CLRrz6Sptz9sV7 for ; Wed, 28 Oct 2020 09:56:19 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1832595AbgJ0W4R (ORCPT ); Tue, 27 Oct 2020 18:56:17 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:50108 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1832564AbgJ0W4H (ORCPT ); Tue, 27 Oct 2020 18:56:07 -0400 From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1603839365; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jttJQYUY921gdQBinUA2N0GBiq3HS7MmOYm/9rq3mlU=; b=0GnEbZqlXJZLQfjONDg/KSujsSvfMvUdN9MjzKaP55p1OEL8105JJGIQe6F3XVpxye4QRG RNPtf8SiqF6hXmGgkfl/1C/UqBtecqyV1R5ba28I2myfZGnsuvT0wtttW7aBU23i8cp0Kp KPePrRqnO5QD3zsNjl0yz3RIKPYR9IqDfkJJwLOramUuxXxYnkd8Z0mwa5+ATFm5MBsojH c1s8YWDtwJjB+Py3JzwS5Sia73LSJCXx75eylZj0Pz3x7x+1Nh9Y0AYUTJPGgc6ryex4na 0xwLG2EUr3iK9u8qT5n0uUKslQ2EpAHI1jsLzfDpVY5F44gyFbKLZ6KAepUyjA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1603839365; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jttJQYUY921gdQBinUA2N0GBiq3HS7MmOYm/9rq3mlU=; b=LsJR1NJ1kfuG7mH7WHiTgHjGj108g1qTNgV4c1oTVdGNGA/LhmC59JAAm3KDssv9bSM5bW AvG+0+npRHIheYCA== To: netdev@vger.kernel.org Cc: Aymen Sghaier , Daniel Drake , "David S. Miller" , Herbert Xu , =?utf-8?q?Horia_Geant=C4=83?= , Jakub Kicinski , Jon Mason , Jouni Malinen , Kalle Valo , Leon Romanovsky , linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-rdma@vger.kernel.org, linux-wireless@vger.kernel.org, Li Yang , Madalin Bucur , Ping-Ke Shih , Rain River , Saeed Mahameed , Samuel Chessman , Ulrich Kunitz , Zhu Yanjun , Thomas Gleixner , Sebastian Andrzej Siewior Subject: [PATCH net-next 15/15] crypto: caam: Replace in_irq() usage. Date: Tue, 27 Oct 2020 23:54:54 +0100 Message-Id: <20201027225454.3492351-16-bigeasy@linutronix.de> In-Reply-To: <20201027225454.3492351-1-bigeasy@linutronix.de> References: <20201027225454.3492351-1-bigeasy@linutronix.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The driver uses in_irq() + in_serving_softirq() magic to decide if NAPI scheduling is required or packet processing. The usage of in_*() in drivers is phased out and Linus clearly requested that code which changes behaviour depending on context should either be seperated or the context be conveyed in an argument passed by the caller, which usually knows the context. Use the `napi' argument passed by the callback. It is set true if called from the interrupt handler and NAPI should be scheduled. Signed-off-by: Sebastian Andrzej Siewior Cc: "Horia Geantă" Cc: Aymen Sghaier Cc: Herbert Xu Cc: "David S. Miller" Cc: Madalin Bucur Cc: Jakub Kicinski Cc: Li Yang Cc: linux-crypto@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org --- drivers/crypto/caam/qi.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/crypto/caam/qi.c b/drivers/crypto/caam/qi.c index 09ea398304c8b..79dbd90887f8a 100644 --- a/drivers/crypto/caam/qi.c +++ b/drivers/crypto/caam/qi.c @@ -545,14 +545,10 @@ static void cgr_cb(struct qman_portal *qm, struct qman_cgr *cgr, int congested) } } -static int caam_qi_napi_schedule(struct qman_portal *p, struct caam_napi *np) +static int caam_qi_napi_schedule(struct qman_portal *p, struct caam_napi *np, + bool napi) { - /* - * In case of threaded ISR, for RT kernels in_irq() does not return - * appropriate value, so use in_serving_softirq to distinguish between - * softirq and irq contexts. - */ - if (unlikely(in_irq() || !in_serving_softirq())) { + if (napi) { /* Disable QMan IRQ source and invoke NAPI */ qman_p_irqsource_remove(p, QM_PIRQ_DQRI); np->p = p; @@ -574,7 +570,7 @@ static enum qman_cb_dqrr_result caam_rsp_fq_dqrr_cb(struct qman_portal *p, struct caam_drv_private *priv = dev_get_drvdata(qidev); u32 status; - if (caam_qi_napi_schedule(p, caam_napi)) + if (caam_qi_napi_schedule(p, caam_napi, napi)) return qman_cb_dqrr_stop; fd = &dqrr->fd;