| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | #ifndef _LINUX_KERNEL_STAT_H |
| 2 | #define _LINUX_KERNEL_STAT_H |
| 3 | |
| 4 | #include <linux/config.h> |
| 5 | #include <asm/irq.h> |
| 6 | #include <linux/smp.h> |
| 7 | #include <linux/threads.h> |
| 8 | #include <linux/percpu.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 | }; |
| 27 | |
| 28 | struct kernel_stat { |
| 29 | struct cpu_usage_stat cpustat; |
| 30 | unsigned int irqs[NR_IRQS]; |
| 31 | }; |
| 32 | |
| 33 | DECLARE_PER_CPU(struct kernel_stat, kstat); |
| 34 | |
| 35 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) |
| 36 | /* Must have preemption disabled for this to be meaningful. */ |
| 37 | #define kstat_this_cpu __get_cpu_var(kstat) |
| 38 | |
| 39 | extern unsigned long long nr_context_switches(void); |
| 40 | |
| 41 | /* |
| 42 | * Number of interrupts per specific IRQ source, since bootup |
| 43 | */ |
| 44 | static inline int kstat_irqs(int irq) |
| 45 | { |
| 46 | int i, sum=0; |
| 47 | |
| 48 | for (i = 0; i < NR_CPUS; i++) |
| 49 | if (cpu_possible(i)) |
| 50 | sum += kstat_cpu(i).irqs[irq]; |
| 51 | |
| 52 | return sum; |
| 53 | } |
| 54 | |
| 55 | extern void account_user_time(struct task_struct *, cputime_t); |
| 56 | extern void account_system_time(struct task_struct *, int, cputime_t); |
| 57 | extern void account_steal_time(struct task_struct *, cputime_t); |
| 58 | |
| 59 | #endif /* _LINUX_KERNEL_STAT_H */ |