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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 | }; |
29 | |
30 | struct kernel_stat { |
31 | struct cpu_usage_stat cpustat; |
32 | #ifndef CONFIG_GENERIC_HARDIRQS |
33 | unsigned int irqs[NR_IRQS]; |
34 | #endif |
35 | unsigned int softirqs[NR_SOFTIRQS]; |
36 | }; |
37 | |
38 | DECLARE_PER_CPU(struct kernel_stat, kstat); |
39 | |
40 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) |
41 | /* Must have preemption disabled for this to be meaningful. */ |
42 | #define kstat_this_cpu __get_cpu_var(kstat) |
43 | |
44 | extern unsigned long long nr_context_switches(void); |
45 | |
46 | #ifndef CONFIG_GENERIC_HARDIRQS |
47 | #define kstat_irqs_this_cpu(irq) \ |
48 | (kstat_this_cpu.irqs[irq]) |
49 | |
50 | struct irq_desc; |
51 | |
52 | static inline void kstat_incr_irqs_this_cpu(unsigned int irq, |
53 | struct irq_desc *desc) |
54 | { |
55 | kstat_this_cpu.irqs[irq]++; |
56 | } |
57 | |
58 | static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) |
59 | { |
60 | return kstat_cpu(cpu).irqs[irq]; |
61 | } |
62 | #else |
63 | #include <linux/irq.h> |
64 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
65 | #define kstat_irqs_this_cpu(DESC) \ |
66 | ((DESC)->kstat_irqs[smp_processor_id()]) |
67 | #define kstat_incr_irqs_this_cpu(irqno, DESC) \ |
68 | ((DESC)->kstat_irqs[smp_processor_id()]++) |
69 | |
70 | #endif |
71 | |
72 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
73 | { |
74 | kstat_this_cpu.softirqs[irq]++; |
75 | } |
76 | |
77 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) |
78 | { |
79 | return kstat_cpu(cpu).softirqs[irq]; |
80 | } |
81 | |
82 | /* |
83 | * Number of interrupts per specific IRQ source, since bootup |
84 | */ |
85 | static inline unsigned int kstat_irqs(unsigned int irq) |
86 | { |
87 | unsigned int sum = 0; |
88 | int cpu; |
89 | |
90 | for_each_possible_cpu(cpu) |
91 | sum += kstat_irqs_cpu(irq, cpu); |
92 | |
93 | return sum; |
94 | } |
95 | |
96 | |
97 | /* |
98 | * Lock/unlock the current runqueue - to extract task statistics: |
99 | */ |
100 | extern unsigned long long task_delta_exec(struct task_struct *); |
101 | |
102 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
103 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); |
104 | extern void account_steal_time(cputime_t); |
105 | extern void account_idle_time(cputime_t); |
106 | |
107 | extern void account_process_tick(struct task_struct *, int user); |
108 | extern void account_steal_ticks(unsigned long ticks); |
109 | extern void account_idle_ticks(unsigned long ticks); |
110 | |
111 | #endif /* _LINUX_KERNEL_STAT_H */ |
112 |
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