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SubjectRe: [PATCH] pci: Add include guard to include/linux/pci_ids.h
On Thu, Jul 10, 2014 at 02:05:11PM +0200, Rasmus Villemoes wrote:
> Adding an include guard frees the preprocessor from reparsing over
> 2600 #defines in the cases where pci_ids.h is somehow included more
> than once. This gives a tiny-but-measurable performance improvement
> when compiling such files.
>
> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>

Applied to pci/misc for v3.17, thanks!

> ---
> include/linux/pci_ids.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> index 7fa3173..6ed0bb7 100644
> --- a/include/linux/pci_ids.h
> +++ b/include/linux/pci_ids.h
> @@ -6,6 +6,8 @@
> * Do not add new entries to this file unless the definitions
> * are shared between multiple drivers.
> */
> +#ifndef _LINUX_PCI_IDS_H
> +#define _LINUX_PCI_IDS_H
>
> /* Device classes and subclasses */
>
> @@ -2968,3 +2970,5 @@
> #define PCI_DEVICE_ID_XEN_PLATFORM 0x0001
>
> #define PCI_VENDOR_ID_OCZ 0x1b85
> +
> +#endif /* _LINUX_PCI_IDS_H */
> --
> 1.9.2
>


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