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[patch 5/7] MIPS: Mark cascade and low level interrupts IRQF_NO_THREAD

from [Thomas Gleixner] [Permanent Link][Original]
To: linux-mips@linux-mips.org
Subject: [patch 5/7] MIPS: Mark cascade and low level interrupts IRQF_NO_THREAD
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 23 Jul 2011 12:41:24 -0000
Cc: Ralf Baechle <ralf@linux-mips.org>, Wu Zhangjin <wuzhangjin@gmail.com>
References: <20110723123948.573545817@linutronix.de>
Sender: linux-mips-bounce@linux-mips.org
User-agent: quilt/0.48-1 
From: Wu Zhangjin <wuzhangjin@gmail.com>

Mark interrupts with no_action handler, cascade interrupts, low level
interrupts (bus error, halt ..) with IRQF_NO_THREAD to exclude them
from forced threading.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

---
 arch/mips/ar7/irq.c                    |    3 ++-
 arch/mips/bcm63xx/irq.c                |    1 +
 arch/mips/cobalt/irq.c                 |    1 +
 arch/mips/dec/setup.c                  |    4 ++++
 arch/mips/emma/markeins/irq.c          |    2 +-
 arch/mips/lasat/interrupt.c            |    1 +
 arch/mips/mti-malta/malta-int.c        |    6 ++++--
 arch/mips/pmc-sierra/msp71xx/msp_irq.c |    2 ++
 arch/mips/pnx8550/common/int.c         |    2 +-
 arch/mips/sgi-ip22/ip22-int.c          |   10 +++++-----
 arch/mips/sni/rm200.c                  |    1 +
 arch/mips/vr41xx/common/irq.c          |    1 +
 12 files changed, 24 insertions(+), 10 deletions(-)

Index: linux-2.6/arch/mips/ar7/irq.c
===================================================================
--- linux-2.6.orig/arch/mips/ar7/irq.c
+++ linux-2.6/arch/mips/ar7/irq.c
@@ -98,7 +98,8 @@ static struct irq_chip ar7_sec_irq_type 
 
 static struct irqaction ar7_cascade_action = {
        .handler = no_action,
-       .name = "AR7 cascade interrupt"
+       .name = "AR7 cascade interrupt",
+       .flags = IRQF_NO_THREAD,
 };
 
 static void __init ar7_irq_init(int base)
Index: linux-2.6/arch/mips/bcm63xx/irq.c
===================================================================
--- linux-2.6.orig/arch/mips/bcm63xx/irq.c
+++ linux-2.6/arch/mips/bcm63xx/irq.c
@@ -222,6 +222,7 @@ static struct irq_chip bcm63xx_external_
 static struct irqaction cpu_ip2_cascade_action = {
        .handler        = no_action,
        .name           = "cascade_ip2",
+       .flags          = IRQF_NO_THREAD,
 };
 
 void __init arch_init_irq(void)
Index: linux-2.6/arch/mips/cobalt/irq.c
===================================================================
--- linux-2.6.orig/arch/mips/cobalt/irq.c
+++ linux-2.6/arch/mips/cobalt/irq.c
@@ -48,6 +48,7 @@ asmlinkage void plat_irq_dispatch(void)
 static struct irqaction cascade = {
        .handler        = no_action,
        .name           = "cascade",
+       .flags          = IRQF_NO_THREAD,
 };
 
 void __init arch_init_irq(void)
Index: linux-2.6/arch/mips/dec/setup.c
===================================================================
--- linux-2.6.orig/arch/mips/dec/setup.c
+++ linux-2.6/arch/mips/dec/setup.c
@@ -101,20 +101,24 @@ int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_
 static struct irqaction ioirq = {
        .handler = no_action,
        .name = "cascade",
+       .flags = IRQF_NO_THREAD,
 };
 static struct irqaction fpuirq = {
        .handler = no_action,
        .name = "fpu",
+       .flags = IRQF_NO_THREAD,
 };
 
 static struct irqaction busirq = {
        .flags = IRQF_DISABLED,
        .name = "bus error",
+       .flags = IRQF_NO_THREAD,
 };
 
 static struct irqaction haltirq = {
        .handler = dec_intr_halt,
        .name = "halt",
+       .flags = IRQF_NO_THREAD,
 };
 
 
Index: linux-2.6/arch/mips/emma/markeins/irq.c
===================================================================
--- linux-2.6.orig/arch/mips/emma/markeins/irq.c
+++ linux-2.6/arch/mips/emma/markeins/irq.c
@@ -169,7 +169,7 @@ void emma2rh_gpio_irq_init(void)
 
 static struct irqaction irq_cascade = {
           .handler = no_action,
-          .flags = 0,
+          .flags = IRQF_NO_THREAD,
           .name = "cascade",
           .dev_id = NULL,
           .next = NULL,
Index: linux-2.6/arch/mips/lasat/interrupt.c
===================================================================
--- linux-2.6.orig/arch/mips/lasat/interrupt.c
+++ linux-2.6/arch/mips/lasat/interrupt.c
@@ -105,6 +105,7 @@ asmlinkage void plat_irq_dispatch(void)
 static struct irqaction cascade = {
        .handler        = no_action,
        .name           = "cascade",
+       .flags          = IRQF_NO_THREAD,
 };
 
 void __init arch_init_irq(void)
Index: linux-2.6/arch/mips/mti-malta/malta-int.c
===================================================================
--- linux-2.6.orig/arch/mips/mti-malta/malta-int.c
+++ linux-2.6/arch/mips/mti-malta/malta-int.c
@@ -350,12 +350,14 @@ unsigned int plat_ipi_resched_int_xlate(
 
 static struct irqaction i8259irq = {
        .handler = no_action,
-       .name = "XT-PIC cascade"
+       .name = "XT-PIC cascade",
+       .flags = IRQF_NO_THREAD,
 };
 
 static struct irqaction corehi_irqaction = {
        .handler = no_action,
-       .name = "CoreHi"
+       .name = "CoreHi",
+       .flags = IRQF_NO_THREAD,
 };
 
 static msc_irqmap_t __initdata msc_irqmap[] = {
Index: linux-2.6/arch/mips/pmc-sierra/msp71xx/msp_irq.c
===================================================================
--- linux-2.6.orig/arch/mips/pmc-sierra/msp71xx/msp_irq.c
+++ linux-2.6/arch/mips/pmc-sierra/msp71xx/msp_irq.c
@@ -109,11 +109,13 @@ asmlinkage void plat_irq_dispatch(struct
 static struct irqaction cic_cascade_msp = {
        .handler = no_action,
        .name    = "MSP CIC cascade"
+       .flags   = IRQF_NO_THREAD,
 };
 
 static struct irqaction per_cascade_msp = {
        .handler = no_action,
        .name    = "MSP PER cascade"
+       .flags   = IRQF_NO_THREAD,
 };
 
 void __init arch_init_irq(void)
Index: linux-2.6/arch/mips/pnx8550/common/int.c
===================================================================
--- linux-2.6.orig/arch/mips/pnx8550/common/int.c
+++ linux-2.6/arch/mips/pnx8550/common/int.c
@@ -167,7 +167,7 @@ static struct irq_chip level_irq_type = 
 
 static struct irqaction gic_action = {
        .handler =      no_action,
-       .flags =        IRQF_DISABLED,
+       .flags =        IRQF_DISABLED | IRQF_NO_THREAD,
        .name =         "GIC",
 };
 
Index: linux-2.6/arch/mips/sgi-ip22/ip22-int.c
===================================================================
--- linux-2.6.orig/arch/mips/sgi-ip22/ip22-int.c
+++ linux-2.6/arch/mips/sgi-ip22/ip22-int.c
@@ -155,32 +155,32 @@ static void __irq_entry indy_buserror_ir
 
 static struct irqaction local0_cascade = {
        .handler        = no_action,
-       .flags          = IRQF_DISABLED,
+       .flags          = IRQF_DISABLED | IRQF_NO_THREAD,
        .name           = "local0 cascade",
 };
 
 static struct irqaction local1_cascade = {
        .handler        = no_action,
-       .flags          = IRQF_DISABLED,
+       .flags          = IRQF_DISABLED | IRQF_NO_THREAD,
        .name           = "local1 cascade",
 };
 
 static struct irqaction buserr = {
        .handler        = no_action,
-       .flags          = IRQF_DISABLED,
+       .flags          = IRQF_DISABLED | IRQF_NO_THREAD,
        .name           = "Bus Error",
 };
 
 static struct irqaction map0_cascade = {
        .handler        = no_action,
-       .flags          = IRQF_DISABLED,
+       .flags          = IRQF_DISABLED | IRQF_NO_THREAD,
        .name           = "mapable0 cascade",
 };
 
 #ifdef USE_LIO3_IRQ
 static struct irqaction map1_cascade = {
        .handler        = no_action,
-       .flags          = IRQF_DISABLED,
+       .flags          = IRQF_DISABLED | IRQF_NO_THREAD,
        .name           = "mapable1 cascade",
 };
 #define SGI_INTERRUPTS SGINT_END
Index: linux-2.6/arch/mips/sni/rm200.c
===================================================================
--- linux-2.6.orig/arch/mips/sni/rm200.c
+++ linux-2.6/arch/mips/sni/rm200.c
@@ -359,6 +359,7 @@ void sni_rm200_init_8259A(void)
 static struct irqaction sni_rm200_irq2 = {
        .handler = no_action,
        .name = "cascade",
+       .flags = IRQF_NO_THREAD,
 };
 
 static struct resource sni_rm200_pic1_resource = {
Index: linux-2.6/arch/mips/vr41xx/common/irq.c
===================================================================
--- linux-2.6.orig/arch/mips/vr41xx/common/irq.c
+++ linux-2.6/arch/mips/vr41xx/common/irq.c
@@ -34,6 +34,7 @@ static irq_cascade_t irq_cascade[NR_IRQS
 static struct irqaction cascade_irqaction = {
        .handler        = no_action,
        .name           = "cascade",
+       .flags          = IRQF_NO_THREAD,
 };
 
 int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int))
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