From patchwork Wed Feb 5 15:59:41 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 13961467 Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) (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 0339C195FEC for ; Wed, 5 Feb 2025 16:00:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738771235; cv=none; b=taTrE5/pVeqfOOyIg+ICpe44Bnq5/mUvDaaXgVeZIfo1TjMnDB/WrB95PY9W0mt8DVxYWwlimGAXLqQNqFkt8iL03kO2QnKThgo1n75rSyRYws6Arl9e4YV0s3tgWNqSRJYzgzEH6cEIK12ayR+I9YF4JAIYyHO4Lhb8I1/p+P4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738771235; c=relaxed/simple; bh=zAamzhUEpJ0Ntfo7PXDoXhLHzC064WJshCcKxat5Ftc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TQ4WoUGBoXAnzCUww8pyVA19ozNKysg3szzCw8pGpw/v5uqTHsZI0hOEqi+LvfiTdL0d1M35hEaIZ8uYeGnfOCvKy4Fobg/PBKGbUzGx/wcKvL81Db7cUX7+uqzpGRPuK7DAFXfMOW72DNw5dEcW6QY8lLoAYUnuqXozfc/82zk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com; spf=pass smtp.mailfrom=ventanamicro.com; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b=YPDDx20u; arc=none smtp.client-ip=209.85.214.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="YPDDx20u" Received: by mail-pl1-f181.google.com with SMTP id d9443c01a7336-21f237fb0eeso10522755ad.2 for ; Wed, 05 Feb 2025 08:00:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1738771233; x=1739376033; darn=lists.linux.dev; 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=2MMc9mwT9NVQ5mz2h0GYOBXRUS44hVyd7ty+rMv4eE4=; b=YPDDx20uIAe+PnIp7mD/A9w+8x5eGfIWPqR8kccOW1wymdBKAWwylBNum4FlQaKzUB Avj1tHygSzDE+aXlaKx4oV0wNIh64rz76HTC1R42WY4FQ1g9L3DPqhF3vfJ2rfDhpt/u GrMALKl4aA/k0i+mHjCrTNYaHtkLl8JC9X7ziZspXK7XCFTq5NjoH6HbJO9kNmeuAhFC 8lBpBZsCKf0EsYmglXhjVWoUWRKQHbY1zgkC3DGBLfYoVVcdRBZfZyARtLZZzy3z9a51 0jlBiA+2oBrzWZB7vA1Kl2pOjqxUQijP1YdfYFWYWTHISnQUo/9jCCk02HzoG9JSAdpn iiww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1738771233; x=1739376033; 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=2MMc9mwT9NVQ5mz2h0GYOBXRUS44hVyd7ty+rMv4eE4=; b=OAZrBe87BfDJ2ypFivhanEM2ZVfmnSdx1PRHR2LTfSJNTgn631nyoYtvf/oXyapyRs 4mc+XeZgrqXpnqUQl3zqyhqZaNNAkF46U2agDKjHz7WurwSp7lW3H+dVpF9y3GC98LCA R8ZI0UWUuWRYbDFUo7OAaIV+ByROCepxxGG4JxWsV8AEepNCjbWWG2dxM6bm+MuQBfzq jycj3I008YyClfGajSMpuwMCjRr2d0mV3KllU0E/mFm9ge4y6ug62ULaMv+c+qN1HEk7 EpjmP6flh5QWnaoh4ACTmXfoFBuhMhAEYgB7LyLGCIqTImkD9zQ208gQoLPmhAaWqZhE 2pRw== X-Forwarded-Encrypted: i=1; AJvYcCXbhlkOZNhWAeqE1uiuz377myBjmlSsyM7O+8WJE3VnigfkP2CgNRn4DqlouEYVq6CecLQ=@lists.linux.dev X-Gm-Message-State: AOJu0YwwoPsI5OlGzEGjSadFksfogNIeI0CZOXryodZnYrziOuj6/YTw 255iJuguVlKrpLGBJdsmrZA9RqI41jZVNct6y4fiveqqkpNLx6EeDSz9ZEgtDek= X-Gm-Gg: ASbGncvBGwr4J5gsqL2YxAEr5E69J9oUivHMyNTnwWlNXHy066JXCx+4GoRliWO+vmn 2T2OOYZ1BId0W2fgf8fGp1UWlMT1FHgD5GBkNAvSMwv35cWNjNvcZFNDXytqGOaFOmclP4S1mOI 3Zvup9E6/D3pCTJfMm4qGB0U4FJI8IjzvkNRg6HzP31Vrr6D60QVhQIhqLNKHX3tndy8wJdSIkE 8giXMePINR3ZC6p9/hDxRZdRsRvzUmW7Y6/xsdZ0a5NpKciywg8gthf5uxb7I9cIZAayOrWygLO CkQ2IAwjqVsbDqrqxBsvTSJ2ucAR0P4G37hFsg1m/FBty+IfXen7Ohs= X-Google-Smtp-Source: AGHT+IFVUygBqhzTxplgfR5D4ALHtsI55bhay/IfP7Si4rFXdhEgGg1YfTQqUROzXYR+kUtbmKwJEQ== X-Received: by 2002:a17:903:8c7:b0:21f:16b2:9339 with SMTP id d9443c01a7336-21f17e2a39amr53896345ad.27.1738771233066; Wed, 05 Feb 2025 08:00:33 -0800 (PST) Received: from anup-ubuntu-vm.localdomain ([103.97.166.196]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21edddf883fsm99369015ad.4.2025.02.05.08.00.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Feb 2025 08:00:32 -0800 (PST) From: Anup Patel To: Thomas Gleixner Cc: Marc Zyngier , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Palmer Dabbelt , Paul Walmsley , Atish Patra , Andrew Jones , Sunil V L , Anup Patel , linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, Anup Patel Subject: [PATCH v4 05/11] genirq: Introduce irq_can_move_in_process_context() Date: Wed, 5 Feb 2025 21:29:41 +0530 Message-ID: <20250205155948.81385-6-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250205155948.81385-1-apatel@ventanamicro.com> References: <20250205155948.81385-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The interrupt controller drivers which use GENERIC_PENDING_IRQ can move interrupts in process context for downstrean devices which support atomic MSI configuration. Introduce irq_can_move_in_process_context() which allows interrupt controller drivers to test whether a particular interrupt can be moved process context. Signed-off-by: Anup Patel --- include/linux/irq.h | 2 ++ kernel/irq/migration.c | 11 +++++++++++ 2 files changed, 13 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 1884fa4ec9b5..5b67a47da144 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -617,6 +617,7 @@ extern int irq_affinity_online_cpu(unsigned int cpu); #endif #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) +bool irq_can_move_in_process_context(struct irq_data *data); void __irq_move_irq(struct irq_data *data); static inline void irq_move_irq(struct irq_data *data) { @@ -626,6 +627,7 @@ static inline void irq_move_irq(struct irq_data *data) void irq_move_masked_irq(struct irq_data *data); void irq_force_complete_move(struct irq_desc *desc); #else +static inline bool irq_can_move_in_process_context(struct irq_data *data) { return true; } static inline void irq_move_irq(struct irq_data *data) { } static inline void irq_move_masked_irq(struct irq_data *data) { } static inline void irq_force_complete_move(struct irq_desc *desc) { } diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c index 2920024475a3..428e42d3bc91 100644 --- a/kernel/irq/migration.c +++ b/kernel/irq/migration.c @@ -126,3 +126,14 @@ void __irq_move_irq(struct irq_data *idata) if (!masked) idata->chip->irq_unmask(idata); } + +bool irq_can_move_in_process_context(struct irq_data *data) +{ + /* + * Get top level irq_data when CONFIG_IRQ_DOMAIN_HIERARCHY is enabled, + * and it should be optimized away when CONFIG_IRQ_DOMAIN_HIERARCHY is + * disabled. So we avoid an "#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY" here. + */ + data = irq_desc_get_irq_data(irq_data_to_desc(data)); + return irq_can_move_pcntxt(data); +}