From patchwork Thu Sep 12 09:30:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Rikalo X-Patchwork-Id: 13801804 Received: from mail-lf1-f42.google.com (mail-lf1-f42.google.com [209.85.167.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 778CD19F412; Thu, 12 Sep 2024 09:31:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726133463; cv=none; b=tGpPbfxzpIFBxYG0b9IQqf1IZ3yzq4cORRzW5PtbBhNT881LWkVj356GIbu0gdGtM4Wl/QXwghwBLSwkcSXQ2eVukCwphlHSvMnCum/5yGrHIMCq08tBRzKlJ37TERjWvCybOTgtUj6T9PhPfo/Ph+boukZtSNuBBp8B7hX1gag= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726133463; c=relaxed/simple; bh=6v8h21BYHwmBn6z3r5CIfCo7toAhvHcTjG+vWOZBQCA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=eEtJTpaDWi3zi4Bh9vt7jSXNtFVqVfZLUWMB3OLKLBnRnABOCkys/HC2B+CfexY8tpVKdk/oXwsbO/jQUExo61ydZbyS5P6yf9Su0vD5H/Cq4lSn7XoSHEhHZR6ImfJG61PJX6sVJTGzeUEUzaghJEyKuYv0R9+zMF7Z61J9ZqY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=IFw37+lk; arc=none smtp.client-ip=209.85.167.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IFw37+lk" Received: by mail-lf1-f42.google.com with SMTP id 2adb3069b0e04-5365b71a6bdso829705e87.2; Thu, 12 Sep 2024 02:31:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726133459; x=1726738259; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Ajgv0hB3TeKXEQwcY+X8KT/8Qpdg4uMdZRkO0EFzzv0=; b=IFw37+lklsAZZ2OdoVqR2/bXtkgB+n5aGAMdHF2PLsmub9WNV7mnWjxY99WpuXTpao oRiv4uWTpkZRYdYS/AUavU8HM7PRqKqjAOR3EiWJskNduR13EukgH6k6xBHwQmY1evRW hkAM9v9Vf0PBwTB8d1vK5oFVH+wqzzR/q3/4M+pR1rzXNbbFPMpTHbbx0lUXHjoUwwfy xgbUwpc/XVDsXB+clUtVylrEtxGB3lQkT/fNawkvCxJdDy7HuzMCzZnKVj5n6Wg4GDGM az7UYWm0ON3znOQ1CyguuKi4xqvJ9krSsXfeeKQKS/xCQRzJ8/fAMEzVHd4BJC3jV57l DNXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726133459; x=1726738259; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Ajgv0hB3TeKXEQwcY+X8KT/8Qpdg4uMdZRkO0EFzzv0=; b=WbVYYeuncNUt2dwD3d08mdKBFBtVKFXlkgn0QEDHVut97exjtGE1WRgqSOL/aP4RX+ pSL5lYOdser9Fvh6vTUE1BJCa+hopZDjms9DKPXH+VZlXxRSlTuE38n73IsH/5VJ1kus rYX3ty3wiymGUa8rmhqT/xDGBKO4wecQmjBtTjayYiPWszdF4TnoMC458AucZbVwxVcQ CtXksAHpbWWQu6CCwaSTuIJvxo6j5NVYOVmqBn7skIU6keLV4KNGkl3CJKpk/YK+Scs7 SyASdk8M9KNtVWO7nw6zlQ3JnqNc1CeXsmlO1XOFZt6+LlggQaYcWSFjlSPIOedgYekm JZnA== X-Forwarded-Encrypted: i=1; AJvYcCU78tZXYUmrx0LHP8Z3Z5VUxapUO1O5u+flPbEuuJ+eDPV3SVAfMJi74Y2p2lwb+A8qWvq4Tf9M5RKCjA==@vger.kernel.org, AJvYcCXac76BBEW9z9wBz1OM6xOfWJNfOl4/O2uw4cO0A97ut5BZckOcCUE6KOaUbFum+9CmckSJHU7lEXDUKHg=@vger.kernel.org X-Gm-Message-State: AOJu0YyuXRVo5gDLMn8n1ud+fvxmQMwJS+MjHyMai19uM4hJvjZf3pFt 9ST3iCheHVWhBNPCja0ANJKZhbWxbtjJlkd1K8KHbbg1BcMJ2nZl X-Google-Smtp-Source: AGHT+IHDYnW78bOUZS4nhLcuxJll9/+0I9MSg/om/F296GkVTANK4fS4HTz7sKENbHh6UUayiXU6zA== X-Received: by 2002:a05:6512:ac4:b0:535:6935:7869 with SMTP id 2adb3069b0e04-53678ff5ec3mr1164147e87.55.1726133459051; Thu, 12 Sep 2024 02:30:59 -0700 (PDT) Received: from localhost.localdomain ([212.200.182.192]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42cc137556esm76688225e9.1.2024.09.12.02.30.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Sep 2024 02:30:58 -0700 (PDT) From: Aleksandar Rikalo To: Thomas Bogendoerfer Cc: Aleksandar Rikalo , Chao-ying Fu , Daniel Lezcano , Geert Uytterhoeven , Greg Ungerer , Hauke Mehrtens , Ilya Lipnitskiy , Jiaxun Yang , linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, Marc Zyngier , Paul Burton , Peter Zijlstra , Serge Semin , Thomas Gleixner , Tiezhu Yang Subject: [PATCH v6 2/9] irqchip/mips-gic: Support multi-cluster in for_each_online_cpu_gic() Date: Thu, 12 Sep 2024 11:30:44 +0200 Message-Id: <20240912093051.452172-3-arikalo@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240912093051.452172-1-arikalo@gmail.com> References: <20240912093051.452172-1-arikalo@gmail.com> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Paul Burton Use CM's GCR_CL_REDIRECT register to access registers in remote clusters, so users of gic_with_each_online_cpu() gain support for multi-cluster with no further changes. Signed-off-by: Paul Burton Signed-off-by: Chao-ying Fu Signed-off-by: Dragan Mladjenovic Signed-off-by: Aleksandar Rikalo Signed-off-by: Thomas Gleixner Tested-by: Serge Semin --- drivers/irqchip/irq-mips-gic.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 6c7a7d2f0438..29bdfdce2123 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -88,6 +88,12 @@ static int __gic_with_next_online_cpu(int prev) return cpu; } +static inline void gic_unlock_cluster(void) +{ + if (mips_cps_multicluster_cpus()) + mips_cm_unlock_other(); +} + /** * for_each_online_cpu_gic() - Iterate over online CPUs, access local registers * @cpu: An integer variable to hold the current CPU number @@ -102,6 +108,7 @@ static int __gic_with_next_online_cpu(int prev) guard(raw_spinlock_irqsave)(gic_lock); \ for ((cpu) = __gic_with_next_online_cpu(-1); \ (cpu) < nr_cpu_ids; \ + gic_unlock_cluster(), \ (cpu) = __gic_with_next_online_cpu(cpu)) static void gic_clear_pcpu_masks(unsigned int intr)