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 #define kstat_irqs_this_cpu(irq) \ 50 (this_cpu_read(kstat.irqs[irq]) 51 52 struct irq_desc; 53 54 static inline void kstat_incr_irqs_this_cpu(unsigned int irq, 55 struct irq_desc *desc) 56 { 57 kstat_this_cpu.irqs[irq]++; 58 kstat_this_cpu.irqs_sum++; 59 } 60 61 static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) 62 { 63 return kstat_cpu(cpu).irqs[irq]; 64 } 65 #else 66 #include <linux/irq.h> 67 extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); 68 #define kstat_irqs_this_cpu(DESC) \ 69 ((DESC)->kstat_irqs[smp_processor_id()]) 70 #define kstat_incr_irqs_this_cpu(irqno, DESC) do {\ 71 ((DESC)->kstat_irqs[smp_processor_id()]++);\ 72 kstat_this_cpu.irqs_sum++; } while (0) 73 74 #endif 75 76 static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) 77 { 78 kstat_this_cpu.softirqs[irq]++; 79 } 80 81 static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) 82 { 83 return kstat_cpu(cpu).softirqs[irq]; 84 } 85 86 /* 87 * Number of interrupts per specific IRQ source, since bootup 88 */ 89 #ifndef CONFIG_GENERIC_HARDIRQS 90 static inline unsigned int kstat_irqs(unsigned int irq) 91 { 92 unsigned int sum = 0; 93 int cpu; 94 95 for_each_possible_cpu(cpu) 96 sum += kstat_irqs_cpu(irq, cpu); 97 98 return sum; 99 } 100 #else 101 extern unsigned int kstat_irqs(unsigned int irq); 102 #endif 103 104 /* 105 * Number of interrupts per cpu, since bootup 106 */ 107 static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) 108 { 109 return kstat_cpu(cpu).irqs_sum; 110 } 111 112 /* 113 * Lock/unlock the current runqueue - to extract task statistics: 114 */ 115 extern unsigned long long task_delta_exec(struct task_struct *); 116 117 extern void account_user_time(struct task_struct *, cputime_t, cputime_t); 118 extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); 119 extern void account_steal_time(cputime_t); 120 extern void account_idle_time(cputime_t); 121 122 extern void account_process_tick(struct task_struct *, int user); 123 extern void account_steal_ticks(unsigned long ticks); 124 extern void account_idle_ticks(unsigned long ticks); 125 126 #endif /* _LINUX_KERNEL_STAT_H */ 127