11da177e4SLinus Torvalds #ifndef _LINUX_KERNEL_STAT_H 21da177e4SLinus Torvalds #define _LINUX_KERNEL_STAT_H 31da177e4SLinus Torvalds 41da177e4SLinus Torvalds #include <asm/irq.h> 51da177e4SLinus Torvalds #include <linux/smp.h> 61da177e4SLinus Torvalds #include <linux/threads.h> 71da177e4SLinus Torvalds #include <linux/percpu.h> 828ef3584SIngo Molnar #include <linux/cpumask.h> 91da177e4SLinus Torvalds #include <asm/cputime.h> 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds /* 121da177e4SLinus Torvalds * 'kernel_stat.h' contains the definitions needed for doing 131da177e4SLinus Torvalds * some kernel statistics (CPU usage, context switches ...), 141da177e4SLinus Torvalds * used by rstatd/perfmeter 151da177e4SLinus Torvalds */ 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds struct cpu_usage_stat { 181da177e4SLinus Torvalds cputime64_t user; 191da177e4SLinus Torvalds cputime64_t nice; 201da177e4SLinus Torvalds cputime64_t system; 211da177e4SLinus Torvalds cputime64_t softirq; 221da177e4SLinus Torvalds cputime64_t irq; 231da177e4SLinus Torvalds cputime64_t idle; 241da177e4SLinus Torvalds cputime64_t iowait; 251da177e4SLinus Torvalds cputime64_t steal; 26*5e84cfdeSLaurent Vivier cputime64_t guest; 271da177e4SLinus Torvalds }; 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds struct kernel_stat { 301da177e4SLinus Torvalds struct cpu_usage_stat cpustat; 311da177e4SLinus Torvalds unsigned int irqs[NR_IRQS]; 321da177e4SLinus Torvalds }; 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds DECLARE_PER_CPU(struct kernel_stat, kstat); 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds #define kstat_cpu(cpu) per_cpu(kstat, cpu) 371da177e4SLinus Torvalds /* Must have preemption disabled for this to be meaningful. */ 381da177e4SLinus Torvalds #define kstat_this_cpu __get_cpu_var(kstat) 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds extern unsigned long long nr_context_switches(void); 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds /* 431da177e4SLinus Torvalds * Number of interrupts per specific IRQ source, since bootup 441da177e4SLinus Torvalds */ 451da177e4SLinus Torvalds static inline int kstat_irqs(int irq) 461da177e4SLinus Torvalds { 4728ef3584SIngo Molnar int cpu, sum = 0; 481da177e4SLinus Torvalds 490a945022SKAMEZAWA Hiroyuki for_each_possible_cpu(cpu) 5028ef3584SIngo Molnar sum += kstat_cpu(cpu).irqs[irq]; 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds return sum; 531da177e4SLinus Torvalds } 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds extern void account_user_time(struct task_struct *, cputime_t); 561da177e4SLinus Torvalds extern void account_system_time(struct task_struct *, int, cputime_t); 571da177e4SLinus Torvalds extern void account_steal_time(struct task_struct *, cputime_t); 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds #endif /* _LINUX_KERNEL_STAT_H */ 60