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 long irqs_sum; 37 unsigned int softirqs[NR_SOFTIRQS]; 38 }; 39 40 DECLARE_PER_CPU(struct kernel_stat, kstat); 41 42 #define kstat_cpu(cpu) per_cpu(kstat, cpu) 43 /* Must have preemption disabled for this to be meaningful. */ 44 #define kstat_this_cpu __get_cpu_var(kstat) 45 46 extern unsigned long long nr_context_switches(void); 47 48 #ifndef CONFIG_GENERIC_HARDIRQS 49 50 struct irq_desc; 51 52 static inline void kstat_incr_irqs_this_cpu(unsigned int irq, 53 struct irq_desc *desc) 54 { 55 __this_cpu_inc(kstat.irqs[irq]); 56 __this_cpu_inc(kstat.irqs_sum); 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 67 #define kstat_incr_irqs_this_cpu(irqno, DESC) \ 68 do { \ 69 __this_cpu_inc(*(DESC)->kstat_irqs); \ 70 __this_cpu_inc(kstat.irqs_sum); \ 71 } while (0) 72 73 #endif 74 75 static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) 76 { 77 __this_cpu_inc(kstat.softirqs[irq]); 78 } 79 80 static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) 81 { 82 return kstat_cpu(cpu).softirqs[irq]; 83 } 84 85 /* 86 * Number of interrupts per specific IRQ source, since bootup 87 */ 88 #ifndef CONFIG_GENERIC_HARDIRQS 89 static inline unsigned int kstat_irqs(unsigned int irq) 90 { 91 unsigned int sum = 0; 92 int cpu; 93 94 for_each_possible_cpu(cpu) 95 sum += kstat_irqs_cpu(irq, cpu); 96 97 return sum; 98 } 99 #else 100 extern unsigned int kstat_irqs(unsigned int irq); 101 #endif 102 103 /* 104 * Number of interrupts per cpu, since bootup 105 */ 106 static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) 107 { 108 return kstat_cpu(cpu).irqs_sum; 109 } 110 111 /* 112 * Lock/unlock the current runqueue - to extract task statistics: 113 */ 114 extern unsigned long long task_delta_exec(struct task_struct *); 115 116 extern void account_user_time(struct task_struct *, cputime_t, cputime_t); 117 extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); 118 extern void account_steal_time(cputime_t); 119 extern void account_idle_time(cputime_t); 120 121 extern void account_process_tick(struct task_struct *, int user); 122 extern void account_steal_ticks(unsigned long ticks); 123 extern void account_idle_ticks(unsigned long ticks); 124 125 #endif /* _LINUX_KERNEL_STAT_H */ 126