Commit | Line | Data |
---|---|---|
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> |
6859a840 | 10 | #include <asm/irq.h> |
1da177e4 LT |
11 | #include <asm/cputime.h> |
12 | ||
13 | /* | |
14 | * 'kernel_stat.h' contains the definitions needed for doing | |
15 | * some kernel statistics (CPU usage, context switches ...), | |
16 | * used by rstatd/perfmeter | |
17 | */ | |
18 | ||
3292beb3 GC |
19 | enum cpu_usage_stat { |
20 | CPUTIME_USER, | |
21 | CPUTIME_NICE, | |
22 | CPUTIME_SYSTEM, | |
23 | CPUTIME_SOFTIRQ, | |
24 | CPUTIME_IRQ, | |
25 | CPUTIME_IDLE, | |
26 | CPUTIME_IOWAIT, | |
27 | CPUTIME_STEAL, | |
28 | CPUTIME_GUEST, | |
29 | CPUTIME_GUEST_NICE, | |
30 | NR_STATS, | |
31 | }; | |
32 | ||
33 | struct kernel_cpustat { | |
34 | u64 cpustat[NR_STATS]; | |
1da177e4 LT |
35 | }; |
36 | ||
37 | struct kernel_stat { | |
d7e51e66 | 38 | #ifndef CONFIG_GENERIC_HARDIRQS |
0b8f1efa YL |
39 | unsigned int irqs[NR_IRQS]; |
40 | #endif | |
f2c66cd8 | 41 | unsigned long irqs_sum; |
aa0ce5bb | 42 | unsigned int softirqs[NR_SOFTIRQS]; |
1da177e4 LT |
43 | }; |
44 | ||
45 | DECLARE_PER_CPU(struct kernel_stat, kstat); | |
3292beb3 | 46 | DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat); |
1da177e4 | 47 | |
1da177e4 | 48 | /* Must have preemption disabled for this to be meaningful. */ |
3292beb3 GC |
49 | #define kstat_this_cpu (&__get_cpu_var(kstat)) |
50 | #define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat)) | |
51 | #define kstat_cpu(cpu) per_cpu(kstat, cpu) | |
52 | #define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu) | |
1da177e4 LT |
53 | |
54 | extern unsigned long long nr_context_switches(void); | |
55 | ||
d7e51e66 | 56 | #ifndef CONFIG_GENERIC_HARDIRQS |
0b8f1efa | 57 | |
d6c88a50 | 58 | struct irq_desc; |
8c464a4b | 59 | |
d6c88a50 TG |
60 | static inline void kstat_incr_irqs_this_cpu(unsigned int irq, |
61 | struct irq_desc *desc) | |
62 | { | |
6c9ae009 ED |
63 | __this_cpu_inc(kstat.irqs[irq]); |
64 | __this_cpu_inc(kstat.irqs_sum); | |
d6c88a50 | 65 | } |
8c464a4b | 66 | |
7f95ec9e YL |
67 | static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) |
68 | { | |
69 | return kstat_cpu(cpu).irqs[irq]; | |
70 | } | |
0b8f1efa | 71 | #else |
d52a61c0 | 72 | #include <linux/irq.h> |
0b8f1efa | 73 | extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
6c9ae009 ED |
74 | |
75 | #define kstat_incr_irqs_this_cpu(irqno, DESC) \ | |
76 | do { \ | |
77 | __this_cpu_inc(*(DESC)->kstat_irqs); \ | |
78 | __this_cpu_inc(kstat.irqs_sum); \ | |
79 | } while (0) | |
d52a61c0 | 80 | |
0b8f1efa | 81 | #endif |
7f95ec9e | 82 | |
aa0ce5bb KK |
83 | static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
84 | { | |
6c9ae009 | 85 | __this_cpu_inc(kstat.softirqs[irq]); |
aa0ce5bb KK |
86 | } |
87 | ||
88 | static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) | |
89 | { | |
90 | return kstat_cpu(cpu).softirqs[irq]; | |
91 | } | |
92 | ||
1da177e4 LT |
93 | /* |
94 | * Number of interrupts per specific IRQ source, since bootup | |
95 | */ | |
478735e3 | 96 | #ifndef CONFIG_GENERIC_HARDIRQS |
7f95ec9e | 97 | static inline unsigned int kstat_irqs(unsigned int irq) |
1da177e4 | 98 | { |
7f95ec9e YL |
99 | unsigned int sum = 0; |
100 | int cpu; | |
1da177e4 | 101 | |
0a945022 | 102 | for_each_possible_cpu(cpu) |
7f95ec9e | 103 | sum += kstat_irqs_cpu(irq, cpu); |
1da177e4 LT |
104 | |
105 | return sum; | |
106 | } | |
478735e3 KH |
107 | #else |
108 | extern unsigned int kstat_irqs(unsigned int irq); | |
109 | #endif | |
1da177e4 | 110 | |
f2c66cd8 KH |
111 | /* |
112 | * Number of interrupts per cpu, since bootup | |
113 | */ | |
114 | static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) | |
115 | { | |
116 | return kstat_cpu(cpu).irqs_sum; | |
117 | } | |
aa9c4c0f IM |
118 | |
119 | /* | |
120 | * Lock/unlock the current runqueue - to extract task statistics: | |
121 | */ | |
bb34d92f | 122 | extern unsigned long long task_delta_exec(struct task_struct *); |
aa9c4c0f | 123 | |
457533a7 MS |
124 | extern void account_user_time(struct task_struct *, cputime_t, cputime_t); |
125 | extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); | |
79741dd3 MS |
126 | extern void account_steal_time(cputime_t); |
127 | extern void account_idle_time(cputime_t); | |
128 | ||
129 | extern void account_process_tick(struct task_struct *, int user); | |
130 | extern void account_steal_ticks(unsigned long ticks); | |
131 | extern void account_idle_ticks(unsigned long ticks); | |
1da177e4 LT |
132 | |
133 | #endif /* _LINUX_KERNEL_STAT_H */ |