From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 822951514F8; Thu, 16 Apr 2026 18:01:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776362507; cv=none; b=PpbT/OcjHkkulf4E4HNjG8jTb95HaHEHSIkjqxmuMopG19mVocgQwWAYzildd3Gv8ZC9DVvxL55Jnue0rZHRQqqAEcXlBf5HhhnOYM77OLLQtfRAHuZXxeBgxi5LZt3O+3VZUcK8M0VcR324yP1r7ssQXGux90MFGwQXHOwim+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776362507; c=relaxed/simple; bh=z/qUE/WCrDQr3RvpHa7YYVIuPRUsL1w2bKCzec+b0mY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=P0BqEpSmymD8s6pPGueGzbxnicmfGuER+I59f3EB58hkOl+vKyKuposCoIdqDPqv4PiWeOFwIOrxlFx32qRyteCW0znEKSTp5KXxWrS874ao/CBpx4ZSFrbiib52l8WYE8JKryZ4xruQH7W+Jtn40F0rKuAnzymuncHC2TNJ8Mw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BrS5EtC2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BrS5EtC2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22869C2BCB0; Thu, 16 Apr 2026 18:01:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776362507; bh=z/qUE/WCrDQr3RvpHa7YYVIuPRUsL1w2bKCzec+b0mY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BrS5EtC2+VAT+/HCeg6bGBmketYhlQkAvF76NizvSwsl40yst7JHHvF7+u34ItyCj E0VvAgBX0ehdEjy1WimGTGjBufJSz/A7YPaDXcT2MgCk1R9Q7+vb/L/4xSYSTP0LI1 Yj9z4sNT4vJSatLEbOhU4oZqWFqVS7nMzHROX21EWWHs7LV4SpVCSNJTdPziwHxpgP +lcAswAkx7u6QrXK94zCpIbi0LN7GrU6FeWBGHBckNALHfSgPg+hzUDs1msZjjAmPx gCp5Q8tXN5y0hIpTOIdNRu7lWQ9C1Zplfnkx1muakXgZZV9C8gu4TlZ5a09wLdddg9 Gu6nEhGR1pC7A== From: =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= To: Bjorn Helgaas Cc: Bjorn Helgaas , Manivannan Sadhasivam , Lorenzo Pieralisi , Magnus Lindholm , Matt Turner , Richard Henderson , Christophe Leroy , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Dexuan Cui , =?UTF-8?q?Krzysztof=20Ha=C5=82asa?= , Lukas Wunner , "Oliver O'Halloran" , Saurabh Singh Sengar , Shuan He , Srivatsa Bhat , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v5 10/23] PCI/sysfs: Limit pci_sysfs_init() late_initcall compile scope Date: Thu, 16 Apr 2026 18:00:54 +0000 Message-ID: <20260416180107.777065-11-kwilczynski@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260416180107.777065-1-kwilczynski@kernel.org> References: <20260416180107.777065-1-kwilczynski@kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently, pci_sysfs_init() and sysfs_initialized compile unconditionally, even on platforms where static attribute groups handle all resource file creation. Thus, place them behind a new HAVE_PCI_SYSFS_INIT macro, especially as the late_initcall is only needed when: - HAVE_PCI_LEGACY is set, to iterate buses and create legacy I/O and memory files. - Neither HAVE_PCI_MMAP nor ARCH_GENERIC_PCI_MMAP_RESOURCE is set, to iterate devices and create resource files via the __weak pci_create_resource_files() stub override (this is how the Alpha architecture handles this currently). On most systems both conditions are false and the entire late_initcall compiles away. Signed-off-by: Krzysztof Wilczyński --- drivers/pci/pci-sysfs.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 517efb6d71cc..d22bc5c48bc0 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -37,7 +37,14 @@ #define ARCH_PCI_DEV_GROUPS #endif +#if defined(HAVE_PCI_LEGACY) || \ + !defined(HAVE_PCI_MMAP) && !defined(ARCH_GENERIC_PCI_MMAP_RESOURCE) +#define HAVE_PCI_SYSFS_INIT +#endif + +#ifdef HAVE_PCI_SYSFS_INIT static int sysfs_initialized; /* = 0 */ +#endif /* show configuration fields */ #define pci_config_attr(field, format_string) \ @@ -1792,6 +1799,7 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev) } #endif +#ifdef HAVE_PCI_SYSFS_INIT static int __init pci_sysfs_init(void) { #if defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE) @@ -1818,6 +1826,7 @@ static int __init pci_sysfs_init(void) return 0; } late_initcall(pci_sysfs_init); +#endif static struct attribute *pci_dev_dev_attrs[] = { &dev_attr_boot_vga.attr, -- 2.53.0