From patchwork Tue Oct 27 22:54:53 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: 11862093 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9037A14B2 for ; Tue, 27 Oct 2020 22:56:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6A796221F7 for ; Tue, 27 Oct 2020 22:56:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="HCswUXFn"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="oAEOw6n2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1832572AbgJ0W4H (ORCPT ); Tue, 27 Oct 2020 18:56:07 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:50362 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1832562AbgJ0W4F (ORCPT ); Tue, 27 Oct 2020 18:56:05 -0400 From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1603839362; 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=JdH9fbe/FwP3XeKGJ3l0Cm+b4e3o/aTEE/5T4JYIZFo=; b=HCswUXFnBU+7krIAiJOvKpJSk3khqzvmKXrOz1gM0erhfW+xw/741cfqlWqCbrRKLGLiBt 2ZUaoSP5ox8MMXp4zr4zTdeIQdrQbLDd0lfErEBFbuXJjY3Sl3TG4/ouW5bIhvmTNIXpU2 BTxYIVC5S4gOd9AbXC9lwhtY+aEdK+XsyZo+dmWM4PBHrMzxjgQL0BRejFLweIG6Bz/IjH nC8PmUrMrQF9GbZZGnV1R5kFKPY2Fs+ZajwTg/K7K2jZYCeoeZvjAFEvEq0xdkMubwsmn/ UsR1mqQZqTsrHdN5Gr4QV7uqdaWF2X7OF6/NuBkY5fZeD4jNj5by8GNXbkDe4w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1603839362; 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=JdH9fbe/FwP3XeKGJ3l0Cm+b4e3o/aTEE/5T4JYIZFo=; b=oAEOw6n2K77vQLRBPQlNlkEg06bqlyVo2TatzLpimvX8utPK3aWhDMLaJa4tCTD6u/57ST kccvLXygOL73iBBg== 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 14/15] net: dpaa: Replace in_irq() usage. Date: Tue, 27 Oct 2020 23:54:53 +0100 Message-Id: <20201027225454.3492351-15-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: linux-rdma@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/net/ethernet/freescale/dpaa/dpaa_eth.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c index 27835310b718e..2c949acd74c67 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c @@ -2300,9 +2300,9 @@ static void dpaa_tx_conf(struct net_device *net_dev, } static inline int dpaa_eth_napi_schedule(struct dpaa_percpu_priv *percpu_priv, - struct qman_portal *portal) + struct qman_portal *portal, bool napi) { - if (unlikely(in_irq() || !in_serving_softirq())) { + if (napi) { /* Disable QMan IRQ and invoke NAPI */ qman_p_irqsource_remove(portal, QM_PIRQ_DQRI); @@ -2333,7 +2333,7 @@ static enum qman_cb_dqrr_result rx_error_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); - if (dpaa_eth_napi_schedule(percpu_priv, portal)) + if (dpaa_eth_napi_schedule(percpu_priv, portal, napi)) return qman_cb_dqrr_stop; dpaa_eth_refill_bpools(priv); @@ -2377,7 +2377,7 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); percpu_stats = &percpu_priv->stats; - if (unlikely(dpaa_eth_napi_schedule(percpu_priv, portal))) + if (unlikely(dpaa_eth_napi_schedule(percpu_priv, portal, napi))) return qman_cb_dqrr_stop; /* Make sure we didn't run out of buffers */ @@ -2474,7 +2474,7 @@ static enum qman_cb_dqrr_result conf_error_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); - if (dpaa_eth_napi_schedule(percpu_priv, portal)) + if (dpaa_eth_napi_schedule(percpu_priv, portal, napi)) return qman_cb_dqrr_stop; dpaa_tx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); @@ -2499,7 +2499,7 @@ static enum qman_cb_dqrr_result conf_dflt_dqrr(struct qman_portal *portal, percpu_priv = this_cpu_ptr(priv->percpu_priv); - if (dpaa_eth_napi_schedule(percpu_priv, portal)) + if (dpaa_eth_napi_schedule(percpu_priv, portal, napi)) return qman_cb_dqrr_stop; dpaa_tx_conf(net_dev, priv, percpu_priv, &dq->fd, fq->fqid);