diff options
| -rw-r--r-- | arch/mips/include/asm/irq.h | 29 | ||||
| -rw-r--r-- | arch/mips/kernel/irq.c | 30 | ||||
| -rw-r--r-- | arch/mips/kernel/smp.c | 3 | ||||
| -rw-r--r-- | arch/mips/kernel/smtc.c | 21 | ||||
| -rw-r--r-- | arch/mips/kernel/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | arch/mips/sgi-ip22/ip22-int.c | 3 | ||||
| -rw-r--r-- | arch/mips/sgi-ip22/ip22-time.c | 3 |
7 files changed, 53 insertions, 37 deletions
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h index 09b08d05ff7..06960364c96 100644 --- a/arch/mips/include/asm/irq.h +++ b/arch/mips/include/asm/irq.h @@ -113,36 +113,11 @@ do { \ #endif -/* - * do_IRQ handles all normal device IRQ's (the special - * SMP cross-CPU interrupts have their own specific - * handlers). - * - * Ideally there should be away to get this into kernel/irq/handle.c to - * avoid the overhead of a call for just a tiny function ... - */ -#define do_IRQ(irq) \ -do { \ - irq_enter(); \ - __DO_IRQ_SMTC_HOOK(irq); \ - generic_handle_irq(irq); \ - irq_exit(); \ -} while (0) +extern void do_IRQ(unsigned int irq); #ifdef CONFIG_MIPS_MT_SMTC_IRQAFF -/* - * To avoid inefficient and in some cases pathological re-checking of - * IRQ affinity, we have this variant that skips the affinity check. - */ - -#define do_IRQ_no_affinity(irq) \ -do { \ - irq_enter(); \ - __NO_AFFINITY_IRQ_SMTC_HOOK(irq); \ - generic_handle_irq(irq); \ - irq_exit(); \ -} while (0) +extern void do_IRQ_no_affinity(unsigned int irq); #endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */ diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c index 8b0b4181219..981f86c2616 100644 --- a/arch/mips/kernel/irq.c +++ b/arch/mips/kernel/irq.c @@ -22,6 +22,7 @@ #include <linux/seq_file.h> #include <linux/kallsyms.h> #include <linux/kgdb.h> +#include <linux/ftrace.h> #include <asm/atomic.h> #include <asm/system.h> @@ -150,3 +151,32 @@ void __init init_IRQ(void) kgdb_early_setup = 1; #endif } + +/* + * do_IRQ handles all normal device IRQ's (the special + * SMP cross-CPU interrupts have their own specific + * handlers). + */ +void __irq_entry do_IRQ(unsigned int irq) +{ + irq_enter(); + __DO_IRQ_SMTC_HOOK(irq); + generic_handle_irq(irq); + irq_exit(); +} + +#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF +/* + * To avoid inefficient and in some cases pathological re-checking of + * IRQ affinity, we have this variant that skips the affinity check. + */ + +void __irq_entry do_IRQ_no_affinity(unsigned int irq) +{ + irq_enter(); + __NO_AFFINITY_IRQ_SMTC_HOOK(irq); + generic_handle_irq(irq); + irq_exit(); +} + +#endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */ diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index e72e6844d13..6cdca1956b7 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -32,6 +32,7 @@ #include <linux/cpumask.h> #include <linux/cpu.h> #include <linux/err.h> +#include <linux/ftrace.h> #include <asm/atomic.h> #include <asm/cpu.h> @@ -130,7 +131,7 @@ asmlinkage __cpuinit void start_secondary(void) /* * Call into both interrupt handlers, as we share the IPI for them */ -void smp_call_function_interrupt(void) +void __irq_entry smp_call_function_interrupt(void) { irq_enter(); generic_smp_call_function_single_interrupt(); diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index a38e3ee9551..23499b5bd9c 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -25,6 +25,7 @@ #include <linux/interrupt.h> #include <linux/kernel_stat.h> #include <linux/module.h> +#include <linux/ftrace.h> #include <asm/cpu.h> #include <asm/processor.h> @@ -939,23 +940,29 @@ static void ipi_call_interrupt(void) DECLARE_PER_CPU(struct clock_event_device, mips_clockevent_device); -void ipi_decode(struct smtc_ipi *pipi) +static void __irq_entry smtc_clock_tick_interrupt(void) { unsigned int cpu = smp_processor_id(); struct clock_event_device *cd; + int irq = MIPS_CPU_IRQ_BASE + 1; + + irq_enter(); + kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq)); + cd = &per_cpu(mips_clockevent_device, cpu); + cd->event_handler(cd); + irq_exit(); +} + +void ipi_decode(struct smtc_ipi *pipi) +{ void *arg_copy = pipi->arg; int type_copy = pipi->type; - int irq = MIPS_CPU_IRQ_BASE + 1; smtc_ipi_nq(&freeIPIq, pipi); switch (type_copy) { case SMTC_CLOCK_TICK: - irq_enter(); - kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq)); - cd = &per_cpu(mips_clockevent_device, cpu); - cd->event_handler(cd); - irq_exit(); + smtc_clock_tick_interrupt(); break; case LINUX_SMP_IPI: diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 162b29954ba..f25df73db92 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -46,6 +46,7 @@ SECTIONS SCHED_TEXT LOCK_TEXT KPROBES_TEXT + IRQENTRY_TEXT *(.text.*) *(.fixup) *(.gnu.warning) diff --git a/arch/mips/sgi-ip22/ip22-int.c b/arch/mips/sgi-ip22/ip22-int.c index 0ecd5fe9486..383f11d7f44 100644 --- a/arch/mips/sgi-ip22/ip22-int.c +++ b/arch/mips/sgi-ip22/ip22-int.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/kernel_stat.h> #include <linux/interrupt.h> +#include <linux/ftrace.h> #include <asm/irq_cpu.h> #include <asm/sgi/hpc3.h> @@ -150,7 +151,7 @@ static void indy_local1_irqdispatch(void) extern void ip22_be_interrupt(int irq); -static void indy_buserror_irq(void) +static void __irq_entry indy_buserror_irq(void) { int irq = SGI_BUSERR_IRQ; diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c index c8f7d2328b2..603fc91c103 100644 --- a/arch/mips/sgi-ip22/ip22-time.c +++ b/arch/mips/sgi-ip22/ip22-time.c @@ -16,6 +16,7 @@ #include <linux/interrupt.h> #include <linux/kernel_stat.h> #include <linux/time.h> +#include <linux/ftrace.h> #include <asm/cpu.h> #include <asm/mipsregs.h> @@ -115,7 +116,7 @@ __init void plat_time_init(void) } /* Generic SGI handler for (spurious) 8254 interrupts */ -void indy_8254timer_irq(void) +void __irq_entry indy_8254timer_irq(void) { int irq = SGI_8254_0_IRQ; ULONG cnt; |