On Sun, 14 Dec 2008 13:39:41 +0000 Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> wrote: > While looking at reducing the amount of architecture namespace pollution > in the generic kernel, I found that asm/irq.h is included in the vast > majority of compilations on ARM (around 650 files.) > > Since asm/irq.h includes a sub-architecture include file on ARM, this > causes a negative impact on the ccache's ability to re-use the build > results from other sub-architectures, so we have a desire to reduce > the dependencies on asm/irq.h. > > It turns out that a major cause of this is the needless include of > linux/hardirq.h into asm-generic/local.h. The patch below removes this > include, resulting in some 250 to 300 files (around half) of the kernel > then omitting asm/irq.h. > > My test builds still succeed, provided two ARM files are fixed > (arch/arm/kernel/traps.c and arch/arm/mm/fault.c) - so there may be > negative impacts for this on other architectures. > > Note that x86 does not include asm/irq.h nor linux/hardirq.h in its > asm/local.h, so this patch can be viewed as bringing the generic version > into line with the x86 version. Sure. Includes are easy to add and hard to remove. I'll queue it up and see if there's fallout. btw, > From: Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> > Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> that will result in the two rmk's getting separate akpm spam, different Author from Signer-offer, etc. Adding an explicit From: line would improve things. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
