From: Magnus Damm <magnus.damm@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 07/08] ARM: Add CONFIG_DEFAULT_IRQ_DEMUX
Date: Wed, 06 Oct 2010 07:18:29 +0000 [thread overview]
Message-ID: <20101006071829.28048.45307.sendpatchset@t400s> (raw)
In-Reply-To: <20101006071731.28048.89938.sendpatchset@t400s>
From: Magnus Damm <damm@opensource.se>
Add a CONFIG_DEFAULT_IRQ_DEMUX to allow removing the
default IRQ demuxer from the ARM kernel. This will
reduce the memory footprint and also remove the need
for some of the macros in entry-macro.S.
In the case of CONFIG_DEFAULT_IRQ_DEMUX=n the default
IRQ demux code is omitted from the kernel and the per-
mach/plat demux code must then be registered using the
function setup_irq_stubs(). CONFIG_DEFAULT_IRQ_DEMUX=y
keeps the default IRQ demuxer code as-is in the kernel.
Signed-off-by: Magnus Damm <damm@opensource.se>
---
arch/arm/Kconfig | 3 +++
arch/arm/kernel/entry-armv.S | 13 +++++++++++--
2 files changed, 14 insertions(+), 2 deletions(-)
--- 0001/arch/arm/Kconfig
+++ work/arch/arm/Kconfig 2010-10-05 20:36:45.000000000 +0900
@@ -1337,6 +1337,9 @@ config SPARSE_IRQ
number of off-chip IRQs will want to treat this as
experimental until they have been independently verified.
+config DEFAULT_IRQ_DEMUX
+ def_bool y
+
source "mm/Kconfig"
config FORCE_MAX_ZONEORDER
--- 0009/arch/arm/kernel/entry-armv.S
+++ work/arch/arm/kernel/entry-armv.S 2010-10-05 20:34:16.000000000 +0900
@@ -128,8 +128,9 @@ __dabt_svc:
UNWIND(.fnend )
ENDPROC(__dabt_svc)
+#ifdef CONFIG_DEFAULT_IRQ_DEMUX
__irq_svc default
-
+#endif
.align 5
__und_svc:
#ifdef CONFIG_KPROBES
@@ -258,8 +259,9 @@ __dabt_usr:
UNWIND(.fnend )
ENDPROC(__dabt_usr)
+#ifdef CONFIG_DEFAULT_IRQ_DEMUX
__irq_usr default
-
+#endif
.align 5
__und_usr:
usr_entry
@@ -885,10 +887,17 @@ __stubs_start:
.globl __stubs_irq
__stubs_irq:
+#ifdef CONFIG_DEFAULT_IRQ_DEMUX
.long __irq_usr_default @ 0 (USR_26 / USR_32)
.long __irq_invalid @ 1 (FIQ_26 / FIQ_32)
.long __irq_invalid @ 2 (IRQ_26 / IRQ_32)
.long __irq_svc_default @ 3 (SVC_26 / SVC_32)
+#else
+ .long __irq_invalid @ 0 (USR_26 / USR_32)
+ .long __irq_invalid @ 1 (FIQ_26 / FIQ_32)
+ .long __irq_invalid @ 2 (IRQ_26 / IRQ_32)
+ .long __irq_invalid @ 3 (SVC_26 / SVC_32)
+#endif
.long __irq_invalid @ 4
.long __irq_invalid @ 5
.long __irq_invalid @ 6
next prev parent reply other threads:[~2010-10-06 7:18 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-06 7:17 [PATCH 00/08] ARM: Dynamic IRQ demux support Magnus Damm
2010-10-06 7:17 ` [PATCH 01/08] ARM: Move entry-header.S to asm/ Magnus Damm
2010-10-06 7:17 ` [PATCH 02/08] ARM: Move macros from entry-armv.S Magnus Damm
2010-10-06 7:17 ` [PATCH 03/08] ARM: Make alignment_trap macro self-contained Magnus Damm
2010-10-06 7:18 ` [PATCH 04/08] ARM: Convert __irq_svc and __usr_svc to macros Magnus Damm
2010-10-06 7:18 ` [PATCH 05/08] ARM: Move the unwind header to entry-header.S Magnus Damm
2010-10-06 7:18 ` [PATCH 06/08] ARM: Add setup_irq_stubs() function Magnus Damm
2010-10-06 7:18 ` Magnus Damm [this message]
2010-10-06 7:18 ` [PATCH 08/08] ARM: Dynamic IRQ demux for SH-Mobile Magnus Damm
2010-10-06 13:06 ` [PATCH 00/08] ARM: Dynamic IRQ demux support Eric Miao
2010-10-06 14:58 ` Grant Likely
2010-10-06 15:06 ` Eric Miao
2010-10-06 15:11 ` Eric Miao
2010-10-06 15:26 ` Grant Likely
2010-10-06 15:38 ` Eric Miao
2010-10-07 6:39 ` Magnus Damm
2010-10-08 7:09 ` Eric Miao
2010-10-14 10:50 ` Magnus Damm
2010-10-16 3:53 ` Grant Likely
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