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android-review.linaro.org / kernel / hikey-linaro / 0b8f1efad30bd58f89961b82dfe68b9edf8fd2ac / . / include / linux / kernel_stat.h
blob: 4ee4b3d2316ffc78495e7bfa0dd3017f220c05c9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#ifndef _LINUX_KERNEL_STAT_H
2#define _LINUX_KERNEL_STAT_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]4#include <linux/smp.h>
5#include <linux/threads.h>
6#include <linux/percpu.h>
Ingo Molnar28ef3582005-11-07 00:59:29 -0800[diff] [blame]7#include <linux/cpumask.h>
Alan Mayer6859a842008-03-26 16:11:31 -0500[diff] [blame]8#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 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
17struct 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 Vivier5e84cfd2007-10-15 17:00:19 +0200[diff] [blame]26 cputime64_t guest;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]27};
28
29struct kernel_stat {
30 struct cpu_usage_stat cpustat;
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -0800[diff] [blame^]31#ifndef CONFIG_SPARSE_IRQ
32 unsigned int irqs[NR_IRQS];
33#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]34};
35
36DECLARE_PER_CPU(struct kernel_stat, kstat);
37
38#define kstat_cpu(cpu) per_cpu(kstat, cpu)
39/* Must have preemption disabled for this to be meaningful. */
40#define kstat_this_cpu __get_cpu_var(kstat)
41
42extern unsigned long long nr_context_switches(void);
43
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -0800[diff] [blame^]44#ifndef CONFIG_SPARSE_IRQ
45#define kstat_irqs_this_cpu(irq) \
46 (kstat_this_cpu.irqs[irq])
47
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +0200[diff] [blame]48struct irq_desc;
Yinghai Lu8c464a42008-08-25 12:41:19 -0700[diff] [blame]49
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +0200[diff] [blame]50static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
51 struct irq_desc *desc)
52{
53 kstat_this_cpu.irqs[irq]++;
54}
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -0800[diff] [blame^]55#endif
Yinghai Lu8c464a42008-08-25 12:41:19 -0700[diff] [blame]56
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -0800[diff] [blame^]57
58#ifndef CONFIG_SPARSE_IRQ
Yinghai Lu7f95ec92008-08-19 20:50:09 -0700[diff] [blame]59static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
60{
61 return kstat_cpu(cpu).irqs[irq];
62}
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -0800[diff] [blame^]63#else
64extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
65#endif
Yinghai Lu7f95ec92008-08-19 20:50:09 -0700[diff] [blame]66
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]67/*
68 * Number of interrupts per specific IRQ source, since bootup
69 */
Yinghai Lu7f95ec92008-08-19 20:50:09 -0700[diff] [blame]70static inline unsigned int kstat_irqs(unsigned int irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]71{
Yinghai Lu7f95ec92008-08-19 20:50:09 -0700[diff] [blame]72 unsigned int sum = 0;
73 int cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]74
KAMEZAWA Hiroyuki0a945022006-03-28 01:56:37 -0800[diff] [blame]75 for_each_possible_cpu(cpu)
Yinghai Lu7f95ec92008-08-19 20:50:09 -0700[diff] [blame]76 sum += kstat_irqs_cpu(irq, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]77
78 return sum;
79}
80
Frank Mayharbb34d922008-09-12 09:54:39 -0700[diff] [blame]81extern unsigned long long task_delta_exec(struct task_struct *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]82extern void account_user_time(struct task_struct *, cputime_t);
Michael Neulingc66f08b2007-10-18 03:06:34 -0700[diff] [blame]83extern void account_user_time_scaled(struct task_struct *, cputime_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]84extern void account_system_time(struct task_struct *, int, cputime_t);
Michael Neulingc66f08b2007-10-18 03:06:34 -0700[diff] [blame]85extern void account_system_time_scaled(struct task_struct *, cputime_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]86extern void account_steal_time(struct task_struct *, cputime_t);
87
88#endif /* _LINUX_KERNEL_STAT_H */