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1 | #ifndef _LINUX_KERNEL_STAT_H |
2 | #define _LINUX_KERNEL_STAT_H |
3 | |
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 <asm/irq.h> |
10 | #include <asm/cputime.h> |
11 | |
12 | /* |
13 | * 'kernel_stat.h' contains the definitions needed for doing |
14 | * some kernel statistics (CPU usage, context switches ...), |
15 | * used by rstatd/perfmeter |
16 | */ |
17 | |
18 | struct cpu_usage_stat { |
19 | cputime64_t user; |
20 | cputime64_t nice; |
21 | cputime64_t system; |
22 | cputime64_t softirq; |
23 | cputime64_t irq; |
24 | cputime64_t idle; |
25 | cputime64_t iowait; |
26 | cputime64_t steal; |
27 | cputime64_t guest; |
28 | cputime64_t guest_nice; |
29 | }; |
30 | |
31 | struct kernel_stat { |
32 | struct cpu_usage_stat cpustat; |
33 | #ifndef CONFIG_GENERIC_HARDIRQS |
34 | unsigned int irqs[NR_IRQS]; |
35 | #endif |
36 | unsigned int softirqs[NR_SOFTIRQS]; |
37 | }; |
38 | |
39 | DECLARE_PER_CPU(struct kernel_stat, kstat); |
40 | |
41 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) |
42 | /* Must have preemption disabled for this to be meaningful. */ |
43 | #define kstat_this_cpu __get_cpu_var(kstat) |
44 | |
45 | extern unsigned long long nr_context_switches(void); |
46 | |
47 | #ifndef CONFIG_GENERIC_HARDIRQS |
48 | #define kstat_irqs_this_cpu(irq) \ |
49 | (kstat_this_cpu.irqs[irq]) |
50 | |
51 | struct irq_desc; |
52 | |
53 | static inline void kstat_incr_irqs_this_cpu(unsigned int irq, |
54 | struct irq_desc *desc) |
55 | { |
56 | kstat_this_cpu.irqs[irq]++; |
57 | } |
58 | |
59 | static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) |
60 | { |
61 | return kstat_cpu(cpu).irqs[irq]; |
62 | } |
63 | #else |
64 | #include <linux/irq.h> |
65 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
66 | #define kstat_irqs_this_cpu(DESC) \ |
67 | ((DESC)->kstat_irqs[smp_processor_id()]) |
68 | #define kstat_incr_irqs_this_cpu(irqno, DESC) \ |
69 | ((DESC)->kstat_irqs[smp_processor_id()]++) |
70 | |
71 | #endif |
72 | |
73 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
74 | { |
75 | kstat_this_cpu.softirqs[irq]++; |
76 | } |
77 | |
78 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) |
79 | { |
80 | return kstat_cpu(cpu).softirqs[irq]; |
81 | } |
82 | |
83 | /* |
84 | * Number of interrupts per specific IRQ source, since bootup |
85 | */ |
86 | static inline unsigned int kstat_irqs(unsigned int irq) |
87 | { |
88 | unsigned int sum = 0; |
89 | int cpu; |
90 | |
91 | for_each_possible_cpu(cpu) |
92 | sum += kstat_irqs_cpu(irq, cpu); |
93 | |
94 | return sum; |
95 | } |
96 | |
97 | |
98 | /* |
99 | * Lock/unlock the current runqueue - to extract task statistics: |
100 | */ |
101 | extern unsigned long long task_delta_exec(struct task_struct *); |
102 | |
103 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
104 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); |
105 | extern void account_steal_time(cputime_t); |
106 | extern void account_idle_time(cputime_t); |
107 | |
108 | extern void account_process_tick(struct task_struct *, int user); |
109 | extern void account_steal_ticks(unsigned long ticks); |
110 | extern void account_idle_ticks(unsigned long ticks); |
111 | |
112 | #endif /* _LINUX_KERNEL_STAT_H */ |
113 |
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