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1da177e4 LT |
1 | #ifndef _LINUX_KERNEL_STAT_H |
2 | #define _LINUX_KERNEL_STAT_H | |
3 | ||
1da177e4 LT |
4 | #include <linux/smp.h> |
5 | #include <linux/threads.h> | |
6 | #include <linux/percpu.h> | |
28ef3584 | 7 | #include <linux/cpumask.h> |
aa0ce5bb | 8 | #include <linux/interrupt.h> |
6859a840 | 9 | #include <asm/irq.h> |
1da177e4 LT |
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; | |
5e84cfde | 27 | cputime64_t guest; |
ce0e7b28 | 28 | cputime64_t guest_nice; |
1da177e4 LT |
29 | }; |
30 | ||
31 | struct kernel_stat { | |
32 | struct cpu_usage_stat cpustat; | |
d7e51e66 | 33 | #ifndef CONFIG_GENERIC_HARDIRQS |
0b8f1efa YL |
34 | unsigned int irqs[NR_IRQS]; |
35 | #endif | |
f2c66cd8 | 36 | unsigned long irqs_sum; |
aa0ce5bb | 37 | unsigned int softirqs[NR_SOFTIRQS]; |
1da177e4 LT |
38 | }; |
39 | ||
40 | DECLARE_PER_CPU(struct kernel_stat, kstat); | |
41 | ||
42 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) | |
43 | /* Must have preemption disabled for this to be meaningful. */ | |
44 | #define kstat_this_cpu __get_cpu_var(kstat) | |
45 | ||
46 | extern unsigned long long nr_context_switches(void); | |
47 | ||
d7e51e66 | 48 | #ifndef CONFIG_GENERIC_HARDIRQS |
0b8f1efa | 49 | |
d6c88a50 | 50 | struct irq_desc; |
8c464a4b | 51 | |
d6c88a50 TG |
52 | static inline void kstat_incr_irqs_this_cpu(unsigned int irq, |
53 | struct irq_desc *desc) | |
54 | { | |
6c9ae009 ED |
55 | __this_cpu_inc(kstat.irqs[irq]); |
56 | __this_cpu_inc(kstat.irqs_sum); | |
d6c88a50 | 57 | } |
8c464a4b | 58 | |
7f95ec9e YL |
59 | static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) |
60 | { | |
61 | return kstat_cpu(cpu).irqs[irq]; | |
62 | } | |
0b8f1efa | 63 | #else |
d52a61c0 | 64 | #include <linux/irq.h> |
0b8f1efa | 65 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
6c9ae009 ED |
66 | |
67 | #define kstat_incr_irqs_this_cpu(irqno, DESC) \ | |
68 | do { \ | |
69 | __this_cpu_inc(*(DESC)->kstat_irqs); \ | |
70 | __this_cpu_inc(kstat.irqs_sum); \ | |
71 | } while (0) | |
d52a61c0 | 72 | |
0b8f1efa | 73 | #endif |
7f95ec9e | 74 | |
aa0ce5bb KK |
75 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
76 | { | |
6c9ae009 | 77 | __this_cpu_inc(kstat.softirqs[irq]); |
aa0ce5bb KK |
78 | } |
79 | ||
80 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) | |
81 | { | |
82 | return kstat_cpu(cpu).softirqs[irq]; | |
83 | } | |
84 | ||
1da177e4 LT |
85 | /* |
86 | * Number of interrupts per specific IRQ source, since bootup | |
87 | */ | |
478735e3 | 88 | #ifndef CONFIG_GENERIC_HARDIRQS |
7f95ec9e | 89 | static inline unsigned int kstat_irqs(unsigned int irq) |
1da177e4 | 90 | { |
7f95ec9e YL |
91 | unsigned int sum = 0; |
92 | int cpu; | |
1da177e4 | 93 | |
0a945022 | 94 | for_each_possible_cpu(cpu) |
7f95ec9e | 95 | sum += kstat_irqs_cpu(irq, cpu); |
1da177e4 LT |
96 | |
97 | return sum; | |
98 | } | |
478735e3 KH |
99 | #else |
100 | extern unsigned int kstat_irqs(unsigned int irq); | |
101 | #endif | |
1da177e4 | 102 | |
f2c66cd8 KH |
103 | /* |
104 | * Number of interrupts per cpu, since bootup | |
105 | */ | |
106 | static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) | |
107 | { | |
108 | return kstat_cpu(cpu).irqs_sum; | |
109 | } | |
aa9c4c0f IM |
110 | |
111 | /* | |
112 | * Lock/unlock the current runqueue - to extract task statistics: | |
113 | */ | |
bb34d92f | 114 | extern unsigned long long task_delta_exec(struct task_struct *); |
aa9c4c0f | 115 | |
457533a7 MS |
116 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
117 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); | |
79741dd3 MS |
118 | extern void account_steal_time(cputime_t); |
119 | extern void account_idle_time(cputime_t); | |
120 | ||
121 | extern void account_process_tick(struct task_struct *, int user); | |
122 | extern void account_steal_ticks(unsigned long ticks); | |
123 | extern void account_idle_ticks(unsigned long ticks); | |
1da177e4 LT |
124 | |
125 | #endif /* _LINUX_KERNEL_STAT_H */ |