| | 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 <linux/sched.h> |
| | 10 | #include <linux/vtime.h> |
| | 11 | #include <asm/irq.h> |
| | 12 | #include <linux/cputime.h> |
| | 13 | |
| | 14 | /* |
| | 15 | * 'kernel_stat.h' contains the definitions needed for doing |
| | 16 | * some kernel statistics (CPU usage, context switches ...), |
| | 17 | * used by rstatd/perfmeter |
| | 18 | */ |
| | 19 | |
| | 20 | enum cpu_usage_stat { |
| | 21 | CPUTIME_USER, |
| | 22 | CPUTIME_NICE, |
| | 23 | CPUTIME_SYSTEM, |
| | 24 | CPUTIME_SOFTIRQ, |
| | 25 | CPUTIME_IRQ, |
| | 26 | CPUTIME_IDLE, |
| | 27 | CPUTIME_IOWAIT, |
| | 28 | CPUTIME_STEAL, |
| | 29 | CPUTIME_GUEST, |
| | 30 | CPUTIME_GUEST_NICE, |
| | 31 | NR_STATS, |
| | 32 | }; |
| | 33 | |
| | 34 | struct kernel_cpustat { |
| | 35 | u64 cpustat[NR_STATS]; |
| | 36 | }; |
| | 37 | |
| | 38 | struct kernel_stat { |
| | 39 | unsigned long irqs_sum; |
| | 40 | unsigned int softirqs[NR_SOFTIRQS]; |
| | 41 | }; |
| | 42 | |
| | 43 | DECLARE_PER_CPU(struct kernel_stat, kstat); |
| | 44 | DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat); |
| | 45 | |
| | 46 | /* Must have preemption disabled for this to be meaningful. */ |
| | 47 | #define kstat_this_cpu this_cpu_ptr(&kstat) |
| | 48 | #define kcpustat_this_cpu this_cpu_ptr(&kernel_cpustat) |
| | 49 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) |
| | 50 | #define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu) |
| | 51 | |
| | 52 | extern unsigned long long nr_context_switches(void); |
| | 53 | |
| | 54 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
| | 55 | extern void kstat_incr_irq_this_cpu(unsigned int irq); |
| | 56 | |
| | 57 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
| | 58 | { |
| | 59 | __this_cpu_inc(kstat.softirqs[irq]); |
| | 60 | } |
| | 61 | |
| | 62 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) |
| | 63 | { |
| | 64 | return kstat_cpu(cpu).softirqs[irq]; |
| | 65 | } |
| | 66 | |
| | 67 | /* |
| | 68 | * Number of interrupts per specific IRQ source, since bootup |
| | 69 | */ |
| | 70 | extern unsigned int kstat_irqs(unsigned int irq); |
| | 71 | extern unsigned int kstat_irqs_usr(unsigned int irq); |
| | 72 | |
| | 73 | /* |
| | 74 | * Number of interrupts per cpu, since bootup |
| | 75 | */ |
| | 76 | static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) |
| | 77 | { |
| | 78 | return kstat_cpu(cpu).irqs_sum; |
| | 79 | } |
| | 80 | |
| | 81 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
| | 82 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); |
| | 83 | extern void account_steal_time(cputime_t); |
| | 84 | extern void account_idle_time(cputime_t); |
| | 85 | |
| | 86 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
| | 87 | static inline void account_process_tick(struct task_struct *tsk, int user) |
| | 88 | { |
| | 89 | vtime_account_user(tsk); |
| | 90 | } |
| | 91 | #else |
| | 92 | extern void account_process_tick(struct task_struct *, int user); |
| | 93 | #endif |
| | 94 | |
| | 95 | extern void account_steal_ticks(unsigned long ticks); |
| | 96 | extern void account_idle_ticks(unsigned long ticks); |
| | 97 | |
| | 98 | #endif /* _LINUX_KERNEL_STAT_H */ |
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