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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> |
3292beb3 | 9 | #include <linux/sched.h> |
dcbf832e | 10 | #include <linux/vtime.h> |
6859a840 | 11 | #include <asm/irq.h> |
1da177e4 LT |
12 | #include <asm/cputime.h> |
13 | ||
14 | /* | |
15 | * 'kernel_stat.h' contains the definitions needed for doing | |
16 | * some kernel statistics (CPU usage, context switches ...), | |
17 | * used by rstatd/perfmeter | |
18 | */ | |
19 | ||
3292beb3 GC |
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, | |
32 | }; | |
33 | ||
34 | struct kernel_cpustat { | |
35 | u64 cpustat[NR_STATS]; | |
1da177e4 LT |
36 | }; |
37 | ||
38 | struct kernel_stat { | |
d7e51e66 | 39 | #ifndef CONFIG_GENERIC_HARDIRQS |
0b8f1efa YL |
40 | unsigned int irqs[NR_IRQS]; |
41 | #endif | |
f2c66cd8 | 42 | unsigned long irqs_sum; |
aa0ce5bb | 43 | unsigned int softirqs[NR_SOFTIRQS]; |
1da177e4 LT |
44 | }; |
45 | ||
46 | DECLARE_PER_CPU(struct kernel_stat, kstat); | |
3292beb3 | 47 | DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat); |
1da177e4 | 48 | |
1da177e4 | 49 | /* Must have preemption disabled for this to be meaningful. */ |
3292beb3 GC |
50 | #define kstat_this_cpu (&__get_cpu_var(kstat)) |
51 | #define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat)) | |
52 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) | |
53 | #define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu) | |
1da177e4 LT |
54 | |
55 | extern unsigned long long nr_context_switches(void); | |
56 | ||
d7e51e66 | 57 | #ifndef CONFIG_GENERIC_HARDIRQS |
0b8f1efa | 58 | |
d6c88a50 | 59 | struct irq_desc; |
8c464a4b | 60 | |
d6c88a50 TG |
61 | static inline void kstat_incr_irqs_this_cpu(unsigned int irq, |
62 | struct irq_desc *desc) | |
63 | { | |
6c9ae009 ED |
64 | __this_cpu_inc(kstat.irqs[irq]); |
65 | __this_cpu_inc(kstat.irqs_sum); | |
d6c88a50 | 66 | } |
8c464a4b | 67 | |
7f95ec9e YL |
68 | static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) |
69 | { | |
70 | return kstat_cpu(cpu).irqs[irq]; | |
71 | } | |
0b8f1efa | 72 | #else |
d52a61c0 | 73 | #include <linux/irq.h> |
0b8f1efa | 74 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
6c9ae009 ED |
75 | |
76 | #define kstat_incr_irqs_this_cpu(irqno, DESC) \ | |
77 | do { \ | |
78 | __this_cpu_inc(*(DESC)->kstat_irqs); \ | |
79 | __this_cpu_inc(kstat.irqs_sum); \ | |
80 | } while (0) | |
d52a61c0 | 81 | |
0b8f1efa | 82 | #endif |
7f95ec9e | 83 | |
aa0ce5bb KK |
84 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
85 | { | |
6c9ae009 | 86 | __this_cpu_inc(kstat.softirqs[irq]); |
aa0ce5bb KK |
87 | } |
88 | ||
89 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) | |
90 | { | |
91 | return kstat_cpu(cpu).softirqs[irq]; | |
92 | } | |
93 | ||
1da177e4 LT |
94 | /* |
95 | * Number of interrupts per specific IRQ source, since bootup | |
96 | */ | |
478735e3 | 97 | #ifndef CONFIG_GENERIC_HARDIRQS |
7f95ec9e | 98 | static inline unsigned int kstat_irqs(unsigned int irq) |
1da177e4 | 99 | { |
7f95ec9e YL |
100 | unsigned int sum = 0; |
101 | int cpu; | |
1da177e4 | 102 | |
0a945022 | 103 | for_each_possible_cpu(cpu) |
7f95ec9e | 104 | sum += kstat_irqs_cpu(irq, cpu); |
1da177e4 LT |
105 | |
106 | return sum; | |
107 | } | |
478735e3 KH |
108 | #else |
109 | extern unsigned int kstat_irqs(unsigned int irq); | |
110 | #endif | |
1da177e4 | 111 | |
f2c66cd8 KH |
112 | /* |
113 | * Number of interrupts per cpu, since bootup | |
114 | */ | |
115 | static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) | |
116 | { | |
117 | return kstat_cpu(cpu).irqs_sum; | |
118 | } | |
aa9c4c0f IM |
119 | |
120 | /* | |
121 | * Lock/unlock the current runqueue - to extract task statistics: | |
122 | */ | |
bb34d92f | 123 | extern unsigned long long task_delta_exec(struct task_struct *); |
aa9c4c0f | 124 | |
457533a7 MS |
125 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
126 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); | |
79741dd3 MS |
127 | extern void account_steal_time(cputime_t); |
128 | extern void account_idle_time(cputime_t); | |
129 | ||
abf917cd | 130 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
bcebdf84 FW |
131 | static inline void account_process_tick(struct task_struct *tsk, int user) |
132 | { | |
133 | vtime_account_user(tsk); | |
134 | } | |
135 | #else | |
79741dd3 | 136 | extern void account_process_tick(struct task_struct *, int user); |
bcebdf84 FW |
137 | #endif |
138 | ||
79741dd3 MS |
139 | extern void account_steal_ticks(unsigned long ticks); |
140 | extern void account_idle_ticks(unsigned long ticks); | |
1da177e4 LT |
141 | |
142 | #endif /* _LINUX_KERNEL_STAT_H */ |