| | 1 | #ifndef _LINUX_KERNEL_STAT_H |
| | 2 | #define _LINUX_KERNEL_STAT_H |
| | 3 | |
| | 4 | #include <linux/smp.h> |
| | 5 | #include <linux/threads.h> |
| | 6 | #include <linux/percpu.h> |
| | 7 | #include <linux/cpumask.h> |
| | 8 | #include <linux/interrupt.h> |
| | 9 | #include <asm/irq.h> |
| | 10 | #include <asm/cputime.h> |
| | 11 | |
| | 12 | /* |
| | 13 | * 'kernel_stat.h' contains the definitions needed for doing |
| | 14 | * some kernel statistics (CPU usage, context switches ...), |
| | 15 | * used by rstatd/perfmeter |
| | 16 | */ |
| | 17 | |
| | 18 | struct cpu_usage_stat { |
| | 19 | cputime64_t user; |
| | 20 | cputime64_t nice; |
| | 21 | cputime64_t system; |
| | 22 | cputime64_t softirq; |
| | 23 | cputime64_t irq; |
| | 24 | cputime64_t idle; |
| | 25 | cputime64_t iowait; |
| | 26 | cputime64_t steal; |
| | 27 | cputime64_t guest; |
| | 28 | cputime64_t guest_nice; |
| | 29 | }; |
| | 30 | |
| | 31 | struct kernel_stat { |
| | 32 | struct cpu_usage_stat cpustat; |
| | 33 | #ifndef CONFIG_GENERIC_HARDIRQS |
| | 34 | unsigned int irqs[NR_IRQS]; |
| | 35 | #endif |
| | 36 | unsigned int softirqs[NR_SOFTIRQS]; |
| | 37 | }; |
| | 38 | |
| | 39 | DECLARE_PER_CPU(struct kernel_stat, kstat); |
| | 40 | |
| | 41 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) |
| | 42 | /* Must have preemption disabled for this to be meaningful. */ |
| | 43 | #define kstat_this_cpu __get_cpu_var(kstat) |
| | 44 | |
| | 45 | extern unsigned long long nr_context_switches(void); |
| | 46 | |
| | 47 | #ifndef CONFIG_GENERIC_HARDIRQS |
| | 48 | #define kstat_irqs_this_cpu(irq) \ |
| | 49 | (kstat_this_cpu.irqs[irq]) |
| | 50 | |
| | 51 | struct irq_desc; |
| | 52 | |
| | 53 | static inline void kstat_incr_irqs_this_cpu(unsigned int irq, |
| | 54 | struct irq_desc *desc) |
| | 55 | { |
| | 56 | kstat_this_cpu.irqs[irq]++; |
| | 57 | } |
| | 58 | |
| | 59 | static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) |
| | 60 | { |
| | 61 | return kstat_cpu(cpu).irqs[irq]; |
| | 62 | } |
| | 63 | #else |
| | 64 | #include <linux/irq.h> |
| | 65 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
| | 66 | #define kstat_irqs_this_cpu(DESC) \ |
| | 67 | ((DESC)->kstat_irqs[smp_processor_id()]) |
| | 68 | #define kstat_incr_irqs_this_cpu(irqno, DESC) \ |
| | 69 | ((DESC)->kstat_irqs[smp_processor_id()]++) |
| | 70 | |
| | 71 | #endif |
| | 72 | |
| | 73 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
| | 74 | { |
| | 75 | kstat_this_cpu.softirqs[irq]++; |
| | 76 | } |
| | 77 | |
| | 78 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) |
| | 79 | { |
| | 80 | return kstat_cpu(cpu).softirqs[irq]; |
| | 81 | } |
| | 82 | |
| | 83 | /* |
| | 84 | * Number of interrupts per specific IRQ source, since bootup |
| | 85 | */ |
| | 86 | static inline unsigned int kstat_irqs(unsigned int irq) |
| | 87 | { |
| | 88 | unsigned int sum = 0; |
| | 89 | int cpu; |
| | 90 | |
| | 91 | for_each_possible_cpu(cpu) |
| | 92 | sum += kstat_irqs_cpu(irq, cpu); |
| | 93 | |
| | 94 | return sum; |
| | 95 | } |
| | 96 | |
| | 97 | |
| | 98 | /* |
| | 99 | * Lock/unlock the current runqueue - to extract task statistics: |
| | 100 | */ |
| | 101 | extern unsigned long long task_delta_exec(struct task_struct *); |
| | 102 | |
| | 103 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
| | 104 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); |
| | 105 | extern void account_steal_time(cputime_t); |
| | 106 | extern void account_idle_time(cputime_t); |
| | 107 | |
| | 108 | extern void account_process_tick(struct task_struct *, int user); |
| | 109 | extern void account_steal_ticks(unsigned long ticks); |
| | 110 | extern void account_idle_ticks(unsigned long ticks); |
| | 111 | |
| | 112 | #endif /* _LINUX_KERNEL_STAT_H */ |
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