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 }; 29 30 struct kernel_stat { 31 struct cpu_usage_stat cpustat; 32 #ifndef CONFIG_GENERIC_HARDIRQS 33 unsigned int irqs[NR_IRQS]; 34 #endif 35 unsigned int softirqs[NR_SOFTIRQS]; 36 }; 37 38 DECLARE_PER_CPU(struct kernel_stat, kstat); 39 40 #define kstat_cpu(cpu) per_cpu(kstat, cpu) 41 /* Must have preemption disabled for this to be meaningful. */ 42 #define kstat_this_cpu __get_cpu_var(kstat) 43 44 extern unsigned long long nr_context_switches(void); 45 46 #ifndef CONFIG_GENERIC_HARDIRQS 47 #define kstat_irqs_this_cpu(irq) \ 48 (kstat_this_cpu.irqs[irq]) 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 kstat_this_cpu.irqs[irq]++; 56 } 57 58 static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) 59 { 60 return kstat_cpu(cpu).irqs[irq]; 61 } 62 #else 63 #include <linux/irq.h> 64 extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); 65 #define kstat_irqs_this_cpu(DESC) \ 66 ((DESC)->kstat_irqs[smp_processor_id()]) 67 #define kstat_incr_irqs_this_cpu(irqno, DESC) \ 68 ((DESC)->kstat_irqs[smp_processor_id()]++) 69 70 #endif 71 72 static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) 73 { 74 kstat_this_cpu.softirqs[irq]++; 75 } 76 77 static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) 78 { 79 return kstat_cpu(cpu).softirqs[irq]; 80 } 81 82 /* 83 * Number of interrupts per specific IRQ source, since bootup 84 */ 85 static inline unsigned int kstat_irqs(unsigned int irq) 86 { 87 unsigned int sum = 0; 88 int cpu; 89 90 for_each_possible_cpu(cpu) 91 sum += kstat_irqs_cpu(irq, cpu); 92 93 return sum; 94 } 95 96 97 /* 98 * Lock/unlock the current runqueue - to extract task statistics: 99 */ 100 extern unsigned long long task_delta_exec(struct task_struct *); 101 102 extern void account_user_time(struct task_struct *, cputime_t, cputime_t); 103 extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); 104 extern void account_steal_time(cputime_t); 105 extern void account_idle_time(cputime_t); 106 107 extern void account_process_tick(struct task_struct *, int user); 108 extern void account_steal_ticks(unsigned long ticks); 109 extern void account_idle_ticks(unsigned long ticks); 110 111 #endif /* _LINUX_KERNEL_STAT_H */ 112