From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 12763C433E7 for ; Wed, 14 Oct 2020 11:13:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB96D208B3 for ; Wed, 14 Oct 2020 11:13:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="FYmcxhvH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387724AbgJNLNF (ORCPT ); Wed, 14 Oct 2020 07:13:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387430AbgJNLNF (ORCPT ); Wed, 14 Oct 2020 07:13:05 -0400 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43EBCC061755 for ; Wed, 14 Oct 2020 04:13:05 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id p11so1581331pld.5 for ; Wed, 14 Oct 2020 04:13:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=EUkHDvfGVE/Mcc9y3ck7YoAw/1fhaX3NtNSY/g0jhfY=; b=FYmcxhvH0YuLvemO1AyMtpefAmnRpXGpQXtcK0AOZ7sP5KXApkDaiAxscIbi25/JS7 oub8Nuu9A7q/RCNQ4DsUKWc+34EOV/1Eekj5w/Oxz5qL3/jAJjrpVCKWi8dCbv6jVjo/ 3loFSiCsh4GLzrebFVrFKst9Afli9pXjJ7VsPDNN/L/6oSpaWDtwSHxhGKl3D9l6HLLV ruPFCUKH/09wjzTZn+a2Z0CpJy0lxl6UnKDYkRPE7TRtWvgBMKFB4K8k7pKeFDLz7Len R4887268UA0WpU6UxYBP5N99gQrZHa96GMl6+Jy7F88LVtmVll9z5F384pI/oSbI+7mZ xecw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=EUkHDvfGVE/Mcc9y3ck7YoAw/1fhaX3NtNSY/g0jhfY=; b=BNRtiBN8RAsr5T3GAHCoxUd4O9LGCjc4pYBdAOHzGWAAGQesfIW9NpdCEUz2UBCv7y NL2L68jWcGcvhE6hWlCMbSivW0CmoTGDJA4MVtk3Isk5h//dzkPsF7PZ0eTFLVjdeaTg OFUmk6JtSWNmpo4ldZY9rQOPSY/DueGcwUZ4la/MvfOv1KVhR2XnRutUwUR/9MRnwFfo LHo4JOqDSJdB7ia3xeUgMvQlOaEZWY85uWf2ODMmvlb/6n2xSlCVtzJgQ7RE51w5Xusi xt29/c2sLbmR7uBW6VRrjqPYwYA4uVqeSrtftNWrCyhxlmJF7/Wowd2JZg9jikMwdNU3 teLQ== X-Gm-Message-State: AOAM532SJ5I499MJAhPTzcH7/I6r5/oLoXVsp+O5Di+XaVAVTRBGbFBq KeXKcmMUqe7FizZ6KEJ+oQDoDQ== X-Google-Smtp-Source: ABdhPJw/CZvq+k4z2trU3PIw1LtcMHYqbyozAmkwTA7XP6H6ZXN05RSuiZF6PfflggOwwVnj6abBpQ== X-Received: by 2002:a17:90b:305:: with SMTP id ay5mr3083885pjb.129.1602673984880; Wed, 14 Oct 2020 04:13:04 -0700 (PDT) Received: from localhost.localdomain ([117.252.65.235]) by smtp.gmail.com with ESMTPSA id f21sm3060102pfk.169.2020.10.14.04.12.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 Oct 2020 04:13:04 -0700 (PDT) From: Sumit Garg To: maz@kernel.org, catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, tglx@linutronix.de, jason@lakedaemon.net, mark.rutland@arm.com, julien.thierry.kdev@gmail.com, dianders@chromium.org, daniel.thompson@linaro.org, jason.wessel@windriver.com, msys.mizuma@gmail.com, ito-yuichi@fujitsu.com, kgdb-bugreport@lists.sourceforge.net, linux-kernel@vger.kernel.org, Sumit Garg Subject: [PATCH v5 3/5] arm64: smp: Allocate and setup IPI as NMI Date: Wed, 14 Oct 2020 16:42:09 +0530 Message-Id: <1602673931-28782-4-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1602673931-28782-1-git-send-email-sumit.garg@linaro.org> References: <1602673931-28782-1-git-send-email-sumit.garg@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allocate an unused IPI that can be turned as NMI using ipi_nmi framework. Also, invoke corresponding NMI setup/teardown APIs. Signed-off-by: Sumit Garg --- arch/arm64/kernel/smp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 82e75fc..129ebfb 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -962,6 +963,8 @@ static void ipi_setup(int cpu) for (i = 0; i < nr_ipi; i++) enable_percpu_irq(ipi_irq_base + i, 0); + + ipi_nmi_setup(cpu); } #ifdef CONFIG_HOTPLUG_CPU @@ -974,6 +977,8 @@ static void ipi_teardown(int cpu) for (i = 0; i < nr_ipi; i++) disable_percpu_irq(ipi_irq_base + i); + + ipi_nmi_teardown(cpu); } #endif @@ -995,6 +1000,9 @@ void __init set_smp_ipi_range(int ipi_base, int n) irq_set_status_flags(ipi_base + i, IRQ_HIDDEN); } + if (n > nr_ipi) + set_smp_ipi_nmi(ipi_base + nr_ipi); + ipi_irq_base = ipi_base; /* Setup the boot CPU immediately */ -- 2.7.4