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authorGrant Likely <grant.likely@secretlab.ca>2012-01-30 08:02:19 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-03-07 17:09:04 +1100
commitad5b7f1350c263eef0c99c20f8659d0ed363cb32 (patch)
tree693827210e17f8e2ccefef26e0ebc26167d4eddb /arch
parente9daf2ad7f603f173d7cd7ee3673b326414f82f4 (diff)
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 <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Ben Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/kernel/irq.c4
2 files changed, 1 insertions, 4 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 613eacf7f40..4eecaaa5445 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 01e2877e8e0..9b6e80668cf 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)