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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #ifndef _LINUX_KERNEL_STAT_H #define _LINUX_KERNEL_STAT_H #include <linux/smp.h> #include <linux/threads.h> #include <linux/percpu.h> #include <linux/cpumask.h> #include <linux/interrupt.h> #include <asm/irq.h> #include <asm/cputime.h> /* * 'kernel_stat.h' contains the definitions needed for doing * some kernel statistics (CPU usage, context switches ...), * used by rstatd/perfmeter */ struct cpu_usage_stat { cputime64_t user; cputime64_t nice; cputime64_t system; cputime64_t softirq; cputime64_t irq; cputime64_t idle; cputime64_t iowait; cputime64_t steal; cputime64_t guest; cputime64_t guest_nice; }; struct kernel_stat { struct cpu_usage_stat cpustat; #ifndef CONFIG_GENERIC_HARDIRQS unsigned int irqs[NR_IRQS]; #endif unsigned long irqs_sum; unsigned int softirqs[NR_SOFTIRQS]; }; DECLARE_PER_CPU(struct kernel_stat, kstat); #define kstat_cpu(cpu) per_cpu(kstat, cpu) /* Must have preemption disabled for this to be meaningful. */ #define kstat_this_cpu __get_cpu_var(kstat) extern unsigned long long nr_context_switches(void); #ifndef CONFIG_GENERIC_HARDIRQS struct irq_desc; static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *desc) { __this_cpu_inc(kstat.irqs[irq]); __this_cpu_inc(kstat.irqs_sum); } static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) { return kstat_cpu(cpu).irqs[irq]; } #else #include <linux/irq.h> extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); #define kstat_incr_irqs_this_cpu(irqno, DESC) \ do { \ __this_cpu_inc(*(DESC)->kstat_irqs); \ __this_cpu_inc(kstat.irqs_sum); \ } while (0) #endif static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) { __this_cpu_inc(kstat.softirqs[irq]); } static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) { return kstat_cpu(cpu).softirqs[irq]; } /* * Number of interrupts per specific IRQ source, since bootup */ #ifndef CONFIG_GENERIC_HARDIRQS static inline unsigned int kstat_irqs(unsigned int irq) { unsigned int sum = 0; int cpu; for_each_possible_cpu(cpu) sum += kstat_irqs_cpu(irq, cpu); return sum; } #else extern unsigned int kstat_irqs(unsigned int irq); #endif /* * Number of interrupts per cpu, since bootup */ static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) { return kstat_cpu(cpu).irqs_sum; } /* * Lock/unlock the current runqueue - to extract task statistics: */ extern unsigned long long task_delta_exec(struct task_struct *); extern void account_user_time(struct task_struct *, cputime_t, cputime_t); extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); extern void account_steal_time(cputime_t); extern void account_idle_time(cputime_t); extern void account_process_tick(struct task_struct *, int user); extern void account_steal_ticks(unsigned long ticks); extern void account_idle_ticks(unsigned long ticks); #endif /* _LINUX_KERNEL_STAT_H */ |