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