From: Grant Likely Date: Mon, 30 Jan 2012 08:02:19 +0000 (+0000) Subject: powerpc: Make SPARSE_IRQ required X-Git-Tag: v3.4~446^2~39 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ad5b7f1350c263eef0c99c20f8659d0ed363cb32;p=platform%2Fkernel%2Flinux-amlogic.git powerpc: Make SPARSE_IRQ required All IRQs on powerpc are managed via irq_domain anyway, there isn't really any advantage to turning SPARSE_IRQ off, and it's the direction we want to take the kernel design anyway. This patch makes powerpc always use SPARSE_IRQ. On pseries_defconfig, SPARSE_IRQ adds only about 0x300 bytes to the .text sections, and removes about 0x20000 from the data section for the static irq_desc table. Signed-off-by: Grant Likely Cc: Rob Herring Cc: Ben Herrenschmidt Cc: Thomas Gleixner Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 613eacf..4eecaaa 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -134,6 +134,7 @@ config PPC select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 select HAVE_GENERIC_HARDIRQS select HAVE_SPARSE_IRQ + select SPARSE_IRQ select IRQ_PER_CPU select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 01e2877..9b6e806 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -93,10 +93,6 @@ extern int tau_interrupts(int); #ifdef CONFIG_PPC64 -#ifndef CONFIG_SPARSE_IRQ -EXPORT_SYMBOL(irq_desc); -#endif - int distribute_irqs = 1; static inline notrace unsigned long get_hard_enabled(void)