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Message-Id: <1404993911-10544-1-git-send-email-linux@rasmusvillemoes.dk> Date: Thu, 10 Jul 2014 14:05:11 +0200 From: Rasmus Villemoes <linux@...musvillemoes.dk> To: Bjorn Helgaas <bhelgaas@...gle.com> Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, Rasmus Villemoes <linux@...musvillemoes.dk> Subject: [PATCH] pci: Add include guard to include/linux/pci_ids.h 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@...musvillemoes.dk> --- 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-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/
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