linux-kernel - Re: [RFC PATCH v2, part 2 01/18] PCI: introduce hotplug-safe PCI bus iterators

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 14 May 2013 11:56:23 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Jiang Liu <liuj97@...il.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Gu Zheng <guz.fnst@...fujitsu.com>,
	Toshi Kani <toshi.kani@...com>,
	Myron Stowe <myron.stowe@...hat.com>,
	Yijing Wang <wangyijing@...wei.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH v2, part 2 01/18] PCI: introduce hotplug-safe PCI bus iterators

On Tue, May 14, 2013 at 9:51 AM, Jiang Liu <liuj97@...il.com> wrote:
> Introduce hotplug-safe PCI bus iterators as below, which hold a
> reference on the returned PCI bus object.
> bool pci_bus_exists(int domain, int busnr);
> struct pci_bus *pci_get_bus(int domain, int busnr);
> struct pci_bus *pci_get_next_bus(struct pci_bus *from);
> struct pci_bus *pci_get_next_root_bus(struct pci_bus *from);
> #define for_each_pci_bus(b) for (b = NULL; (b = pci_get_next_bus(b)); )
> #define for_each_pci_root_bus(b)  \
>                 for (b = NULL; (b = pci_get_next_root_bus(b)); )
>
> The long-term goal is to remove hotplug-unsafe pci_find_bus(),
> pci_find_next_bus() and the global pci_root_buses list.
>
> These new interfaces may be a littler slower than existing interfaces,
> but it should be acceptable because they are not used on hot paths.
>
> Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
> Cc: linux-pci@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org

Acked-by: Yinghai Lu <yinghai@...nel.org>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/