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 */ 113