Viewing file:  kernel_stat.h (1.24 KB) -rw-r--r--
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#ifndef _LINUX_KERNEL_STAT_H
#define _LINUX_KERNEL_STAT_H
#include <linux/config.h>
#include <asm/irq.h>
#include <linux/smp.h>
#include <linux/threads.h>
/*
* 'kernel_stat.h' contains the definitions needed for doing
* some kernel statistics (CPU usage, context switches ...),
* used by rstatd/perfmeter
*/
#define DK_MAX_MAJOR 16
#define DK_MAX_DISK 16
struct kernel_stat {
unsigned int per_cpu_user[NR_CPUS],
per_cpu_nice[NR_CPUS],
per_cpu_system[NR_CPUS];
unsigned int dk_drive[DK_MAX_MAJOR][DK_MAX_DISK];
unsigned int dk_drive_rio[DK_MAX_MAJOR][DK_MAX_DISK];
unsigned int dk_drive_wio[DK_MAX_MAJOR][DK_MAX_DISK];
unsigned int dk_drive_rblk[DK_MAX_MAJOR][DK_MAX_DISK];
unsigned int dk_drive_wblk[DK_MAX_MAJOR][DK_MAX_DISK];
unsigned int pgpgin, pgpgout;
unsigned int pswpin, pswpout;
#if !defined(CONFIG_ARCH_S390)
unsigned int irqs[NR_CPUS][NR_IRQS];
#endif
unsigned int context_swtch;
};
extern struct kernel_stat kstat;
#if !defined(CONFIG_ARCH_S390)
/*
* Number of interrupts per specific IRQ source, since bootup
*/
static inline int kstat_irqs (int irq)
{
int i, sum=0;
for (i = 0 ; i < smp_num_cpus ; i++)
sum += kstat.irqs[cpu_logical_map(i)][irq];
return sum;
}
#endif
#endif /* _LINUX_KERNEL_STAT_H */
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