powerpc: Disable SPARSE_IRQ by default
authorYang Li <leoli@freescale.com>
Mon, 28 Jun 2010 23:32:57 +0000 (23:32 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 8 Jul 2010 08:11:40 +0000 (18:11 +1000)
commit9ce91685f9db48b7050bed916bea097fcbaea093
tree7620a92ba3ea6d2ab87deb00992698d89f002722
parent5afd878a958191a3f32911f1f5f03beee5368e68
powerpc: Disable SPARSE_IRQ by default

The SPARSE_IRQ considerably adds overhead to critical path of IRQ
handling.  However it doesn't benefit much in space for most systems with
limited IRQ_NR.  Should be disabled unless really necessary.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/Kconfig