projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _LINUX_KERNEL_STAT_H |
| 2 | #define _LINUX_KERNEL_STAT_H | |
| 3 | ||
| 1da177e4 LT |
4 | #include <linux/smp.h> |
| 5 | #include <linux/threads.h> | |
| 6 | #include <linux/percpu.h> | |
| 28ef3584 | 7 | #include <linux/cpumask.h> |
| 6859a840 | 8 | #include <asm/irq.h> |
| 1da177e4 LT |
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; | |
| 5e84cfde | 26 | cputime64_t guest; |
| 1da177e4 LT |
27 | }; |
| 28 | ||
| 29 | struct kernel_stat { | |
| 30 | struct cpu_usage_stat cpustat; | |
| 31 | unsigned int irqs[NR_IRQS]; | |
| 32 | }; | |
| 33 | ||
| 34 | DECLARE_PER_CPU(struct kernel_stat, kstat); | |
| 35 | ||
| 36 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) | |
| 37 | /* Must have preemption disabled for this to be meaningful. */ | |
| 38 | #define kstat_this_cpu __get_cpu_var(kstat) | |
| 39 | ||
| 40 | extern unsigned long long nr_context_switches(void); | |
| 41 | ||
| 42 | /* | |
| 43 | * Number of interrupts per specific IRQ source, since bootup | |
| 44 | */ | |
| 45 | static inline int kstat_irqs(int irq) | |
| 46 | { | |
| 28ef3584 | 47 | int cpu, sum = 0; |
| 1da177e4 | 48 | |
| 0a945022 | 49 | for_each_possible_cpu(cpu) |
| 28ef3584 | 50 | sum += kstat_cpu(cpu).irqs[irq]; |
| 1da177e4 LT |
51 | |
| 52 | return sum; | |
| 53 | } | |
| 54 | ||
| 55 | extern void account_user_time(struct task_struct *, cputime_t); | |
| c66f08be | 56 | extern void account_user_time_scaled(struct task_struct *, cputime_t); |
| 1da177e4 | 57 | extern void account_system_time(struct task_struct *, int, cputime_t); |
| c66f08be | 58 | extern void account_system_time_scaled(struct task_struct *, cputime_t); |
| 1da177e4 LT |
59 | extern void account_steal_time(struct task_struct *, cputime_t); |
| 60 | ||
| 61 | #endif /* _LINUX_KERNEL_STAT_H */ |