kernel_stat.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- #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 ipackets, opackets;
- unsigned int ierrors, oerrors;
- unsigned int collisions;
- 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 */