Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753329AbbETKAw (ORCPT ); Wed, 20 May 2015 06:00:52 -0400 Received: from mga01.intel.com ([192.55.52.88]:36488 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751928AbbETKAq (ORCPT ); Wed, 20 May 2015 06:00:46 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,464,1427785200"; d="scan'208";a="574173184" From: Jiang Liu To: Thomas Gleixner , Bjorn Helgaas , Benjamin Herrenschmidt , Ingo Molnar , "H. Peter Anvin" , "Rafael J. Wysocki" , Randy Dunlap , Yinghai Lu , Borislav Petkov , Simon Horman , Magnus Damm , Jiang Liu Cc: Konrad Rzeszutek Wilk , Tony Luck , x86@kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-sh@vger.kernel.org Subject: [RFC v1 10/25] sh: intc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc Date: Wed, 20 May 2015 17:59:58 +0800 Message-Id: <1432116013-25902-11-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1432116013-25902-1-git-send-email-jiang.liu@linux.intel.com> References: <1432116013-25902-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2445 Lines: 66 Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we already have a pointer to corresponding irq_desc. Also replace generic_handle_irq with generic_handle_irq_desc() to avoid looking up irq_desc again. Signed-off-by: Jiang Liu --- drivers/sh/intc/core.c | 2 +- drivers/sh/intc/virq.c | 14 ++++++++------ 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c index 81f22980b2de..e4ca964ca840 100644 --- a/drivers/sh/intc/core.c +++ b/drivers/sh/intc/core.c @@ -67,7 +67,7 @@ void intc_set_prio_level(unsigned int irq, unsigned int level) static void intc_redirect_irq(unsigned int irq, struct irq_desc *desc) { - generic_handle_irq((unsigned int)irq_get_handler_data(irq)); + generic_handle_irq_desc(irq, desc); } static void __init intc_register_irq(struct intc_desc *desc, diff --git a/drivers/sh/intc/virq.c b/drivers/sh/intc/virq.c index 3dbc21696924..8083882a91c0 100644 --- a/drivers/sh/intc/virq.c +++ b/drivers/sh/intc/virq.c @@ -109,7 +109,7 @@ static int add_virq_to_pirq(unsigned int irq, unsigned int virq) static void intc_virq_handler(unsigned int irq, struct irq_desc *desc) { - struct irq_data *data = irq_get_irq_data(irq); + struct irq_data *data = irq_desc_get_irq_data(desc); struct irq_chip *chip = irq_data_get_irq_chip(data); struct intc_virq_list *entry, *vlist = irq_data_get_irq_handler_data(data); struct intc_desc_int *d = get_intc_desc(irq); @@ -118,12 +118,14 @@ static void intc_virq_handler(unsigned int irq, struct irq_desc *desc) for_each_virq(entry, vlist) { unsigned long addr, handle; + struct irq_desc *vdesc = irq_to_desc(entry->irq); - handle = (unsigned long)irq_get_handler_data(entry->irq); - addr = INTC_REG(d, _INTC_ADDR_E(handle), 0); - - if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0)) - generic_handle_irq(entry->irq); + if (vdesc) { + handle = (unsigned long)irq_desc_get_handler_data(vdesc); + addr = INTC_REG(d, _INTC_ADDR_E(handle), 0); + if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0)) + generic_handle_irq_desc(entry->irq, vdesc); + } } chip->irq_unmask(data); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/