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| author |   Mark Salter <msalter@redhat.com> | 2012-12-12 15:36:37 +0000 |
|---|---|---|
| committer |   David Howells <dhowells@redhat.com> | 2012-12-12 15:46:14 +0000 |
| commit | 7d361cb754720d69695a3efc973e9a1a51e46b21 (patch) | |
| tree | 4db3debac5fc6f6a78f0f185c4dcc5d9ddf01249 /arch/mn10300/kernel/smp.c | |
| parent | MN10300: ttySM: Use memory barriers correctly in circular buffer logic (diff) | |
| download | linux-dev-7d361cb754720d69695a3efc973e9a1a51e46b21.tar.xz linux-dev-7d361cb754720d69695a3efc973e9a1a51e46b21.zip | |
MN10300: cleanup IRQ affinity setting
The irq_set_affinity handler for the mn10300 cpu pic had some hard-coded IRQs
which were not to be migrated from one cpu to another. This patch cleans those
up by using a combination of IRQF_NOBALANCING and specialized irq chips with
no irq_set_affinity handler. This maintains the previous behavior by using
generic IRQ interfaces rather than hard coding IRQ numbers in the default
irq_set_affinity handler.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/mn10300/kernel/smp.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c index e62c223e4c45..95983cd21e77 100644 --- a/arch/mn10300/kernel/smp.c +++ b/arch/mn10300/kernel/smp.c @@ -130,10 +130,12 @@ static irqreturn_t smp_call_function_interrupt(int irq, void *dev_id); static struct irqaction reschedule_ipi = { .handler = smp_reschedule_interrupt, + .flags = IRQF_NOBALANCING, .name = "smp reschedule IPI" }; static struct irqaction call_function_ipi = { .handler = smp_call_function_interrupt, + .flags = IRQF_NOBALANCING, .name = "smp call function IPI" }; @@ -141,7 +143,7 @@ static struct irqaction call_function_ipi = { static irqreturn_t smp_ipi_timer_interrupt(int irq, void *dev_id); static struct irqaction local_timer_ipi = { .handler = smp_ipi_timer_interrupt, - .flags = IRQF_DISABLED, + .flags = IRQF_DISABLED | IRQF_NOBALANCING, .name = "smp local timer IPI" }; #endif @@ -180,6 +182,7 @@ static void init_ipi(void) #ifdef CONFIG_MN10300_CACHE_ENABLED /* set up the cache flush IPI */ + irq_set_chip(FLUSH_CACHE_IPI, &mn10300_ipi_type); flags = arch_local_cli_save(); __set_intr_stub(NUM2EXCEP_IRQ_LEVEL(FLUSH_CACHE_GxICR_LV), mn10300_low_ipi_handler); @@ -189,6 +192,7 @@ static void init_ipi(void) #endif /* set up the NMI call function IPI */ + irq_set_chip(CALL_FUNCTION_NMI_IPI, &mn10300_ipi_type); flags = arch_local_cli_save(); GxICR(CALL_FUNCTION_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT; tmp16 = GxICR(CALL_FUNCTION_NMI_IPI); @@ -199,6 +203,10 @@ static void init_ipi(void) __set_intr_stub(NUM2EXCEP_IRQ_LEVEL(SMP_BOOT_GxICR_LV), mn10300_low_ipi_handler); arch_local_irq_restore(flags); + +#ifdef CONFIG_KERNEL_DEBUGGER + irq_set_chip(DEBUGGER_NMI_IPI, &mn10300_ipi_type); +#endif } /** |