From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753935AbbC0J0G (ORCPT ); Fri, 27 Mar 2015 05:26:06 -0400 Received: from mail.skyhub.de ([78.46.96.112]:58661 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753340AbbC0JYv (ORCPT ); Fri, 27 Mar 2015 05:24:51 -0400 From: Borislav Petkov To: linux-edac Cc: Borislav Petkov , "Rafael J. Wysocki" , Len Brown , Tony Luck , Tomasz Nowicki , "Chen, Gong" , Wolfram Sang , Lv Zheng , Naoya Horiguchi , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 4/5] GHES: Elliminate double-loop in the NMI handler Date: Fri, 27 Mar 2015 10:22:57 +0100 Message-Id: <1427448178-20689-5-git-send-email-bp@alien8.de> X-Mailer: git-send-email 2.3.3 In-Reply-To: <1427448178-20689-1-git-send-email-bp@alien8.de> References: <1427448178-20689-1-git-send-email-bp@alien8.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov There's no real need to iterate twice over the HW error sources in the NMI handler. With the previous cleanups, elliminating the second loop is almost trivial. Signed-off-by: Borislav Petkov --- drivers/acpi/apei/ghes.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 0de3adcca03e..94a44bad5576 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -851,25 +851,18 @@ static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs) if (sev >= GHES_SEV_PANIC) __ghes_panic(ghes); - ret = NMI_HANDLED; - } - - if (ret == NMI_DONE) - goto out; - - list_for_each_entry_rcu(ghes, &ghes_nmi, list) { if (!(ghes->flags & GHES_TO_CLEAR)) continue; __process_error(ghes); ghes_clear_estatus(ghes); + + ret = NMI_HANDLED; } #ifdef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG irq_work_queue(&ghes_proc_irq_work); #endif - -out: raw_spin_unlock(&ghes_nmi_lock); return ret; } -- 2.3.3