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@xxxxxxxxxxxxxxxxxx> 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
