Merge tag 'gpio-v3.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
[linux-2.6.git] / include / linux / kernel_stat.h
blob51c72be4a7c3f1782a5d5f21801b06bea1720f57
1 #ifndef _LINUX_KERNEL_STAT_H
2 #define _LINUX_KERNEL_STAT_H
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 <asm/cputime.h>
15 * 'kernel_stat.h' contains the definitions needed for doing
16 * some kernel statistics (CPU usage, context switches ...),
17 * used by rstatd/perfmeter
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,
34 struct kernel_cpustat {
35 u64 cpustat[NR_STATS];
38 struct kernel_stat {
39 unsigned long irqs_sum;
40 unsigned int softirqs[NR_SOFTIRQS];
43 DECLARE_PER_CPU(struct kernel_stat, kstat);
44 DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);
46 /* Must have preemption disabled for this to be meaningful. */
47 #define kstat_this_cpu (&__get_cpu_var(kstat))
48 #define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat))
49 #define kstat_cpu(cpu) per_cpu(kstat, cpu)
50 #define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)
52 extern unsigned long long nr_context_switches(void);
54 #include <linux/irq.h>
55 extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
57 #define kstat_incr_irqs_this_cpu(irqno, DESC) \
58 do { \
59 __this_cpu_inc(*(DESC)->kstat_irqs); \
60 __this_cpu_inc(kstat.irqs_sum); \
61 } while (0)
63 static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
65 __this_cpu_inc(kstat.softirqs[irq]);
68 static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
70 return kstat_cpu(cpu).softirqs[irq];
74 * Number of interrupts per specific IRQ source, since bootup
76 extern unsigned int kstat_irqs(unsigned int irq);
79 * Number of interrupts per cpu, since bootup
81 static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
83 return kstat_cpu(cpu).irqs_sum;
87 * Lock/unlock the current runqueue - to extract task statistics:
89 extern unsigned long long task_delta_exec(struct task_struct *);
91 extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
92 extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
93 extern void account_steal_time(cputime_t);
94 extern void account_idle_time(cputime_t);
96 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
97 static inline void account_process_tick(struct task_struct *tsk, int user)
99 vtime_account_user(tsk);
101 #else
102 extern void account_process_tick(struct task_struct *, int user);
103 #endif
105 extern void account_steal_ticks(unsigned long ticks);
106 extern void account_idle_ticks(unsigned long ticks);
108 #endif /* _LINUX_KERNEL_STAT_H */