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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-11-08 19:08:05 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-08 19:08:05 +0000 |
| commit | 37ee16ae93a3e4ae7dd51beb81d249f5f12a55c2 (patch) | |
| tree | a6cf9773ddb5eae9f173c6a9c9d6120faa5688a4 /include/asm-arm | |
| parent | 3b6353fae0d7ba772d7eb2651727332c9e9c74ac (diff) | |
| download | kernel_samsung_smdk4412-37ee16ae93a3e4ae7dd51beb81d249f5f12a55c2.zip kernel_samsung_smdk4412-37ee16ae93a3e4ae7dd51beb81d249f5f12a55c2.tar.gz kernel_samsung_smdk4412-37ee16ae93a3e4ae7dd51beb81d249f5f12a55c2.tar.bz2 | |
[ARM SMP] Add core ARM support for local timers
Add infrastructure for supporting per-cpu local timers to update
the profiling information and update system time accounting.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm')
| -rw-r--r-- | include/asm-arm/hardirq.h | 1 | ||||
| -rw-r--r-- | include/asm-arm/smp.h | 38 |
2 files changed, 39 insertions, 0 deletions
diff --git a/include/asm-arm/hardirq.h b/include/asm-arm/hardirq.h index e5ccb6b..1cbb173 100644 --- a/include/asm-arm/hardirq.h +++ b/include/asm-arm/hardirq.h @@ -8,6 +8,7 @@ typedef struct { unsigned int __softirq_pending; + unsigned int local_timer_irqs; } ____cacheline_aligned irq_cpustat_t; #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ diff --git a/include/asm-arm/smp.h b/include/asm-arm/smp.h index 52e7c8d..5a72e50 100644 --- a/include/asm-arm/smp.h +++ b/include/asm-arm/smp.h @@ -92,4 +92,42 @@ extern void platform_cpu_die(unsigned int cpu); extern int platform_cpu_kill(unsigned int cpu); extern void platform_cpu_enable(unsigned int cpu); +#ifdef CONFIG_LOCAL_TIMERS +/* + * Setup a local timer interrupt for a CPU. + */ +extern void local_timer_setup(unsigned int cpu); + +/* + * Stop a local timer interrupt. + */ +extern void local_timer_stop(unsigned int cpu); + +/* + * Platform provides this to acknowledge a local timer IRQ + */ +extern int local_timer_ack(void); + +#else + +static inline void local_timer_setup(unsigned int cpu) +{ +} + +static inline void local_timer_stop(unsigned int cpu) +{ +} + +#endif + +/* + * show local interrupt info + */ +extern void show_local_irqs(struct seq_file *); + +/* + * Called from assembly, this is the local timer IRQ handler + */ +asmlinkage void do_local_timer(struct pt_regs *); + #endif /* ifndef __ASM_ARM_SMP_H */ |