| 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 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | #include <asm/irq.h> |
| 5 | #include <linux/smp.h> |
| 6 | #include <linux/threads.h> |
| 7 | #include <linux/percpu.h> |
| Ingo Molnar | 28ef358 | 2005-11-07 00:59:29 -0800 | [diff] [blame] | 8 | #include <linux/cpumask.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
| Laurent Vivier | 5e84cfd | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 26 | cputime64_t guest; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
| Ingo Molnar | 28ef358 | 2005-11-07 00:59:29 -0800 | [diff] [blame] | 47 | int cpu, sum = 0; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| KAMEZAWA Hiroyuki | 0a94502 | 2006-03-28 01:56:37 -0800 | [diff] [blame] | 49 | for_each_possible_cpu(cpu) |
| Ingo Molnar | 28ef358 | 2005-11-07 00:59:29 -0800 | [diff] [blame] | 50 | sum += kstat_cpu(cpu).irqs[irq]; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | return sum; |
| 53 | } |
| 54 | |
| 55 | extern void account_user_time(struct task_struct *, cputime_t); |
| Michael Neuling | c66f08b | 2007-10-18 03:06:34 -0700 | [diff] [blame] | 56 | extern void account_user_time_scaled(struct task_struct *, cputime_t); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | extern void account_system_time(struct task_struct *, int, cputime_t); |
| Michael Neuling | c66f08b | 2007-10-18 03:06:34 -0700 | [diff] [blame] | 58 | extern void account_system_time_scaled(struct task_struct *, cputime_t); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | extern void account_steal_time(struct task_struct *, cputime_t); |
| 60 | |
| 61 | #endif /* _LINUX_KERNEL_STAT_H */ |