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Include/linux/kernel_stat.h


15018 #ifndef _LINUX_KERNEL_STAT_H 15019 #define _LINUX_KERNEL_STAT_H 15020 15021 #include <asm/irq.h> 15022 #include <linux/smp.h> 15023 #include <linux/tasks.h> 15024 15025 /* 'kernel_stat.h' contains the definitions needed for 15026 * doing some kernel statistics (CPU usage, context 15027 * switches ...), used by rstatd/perfmeter */ 15028 15029 #define DK_NDRIVE 4 15030 15031 struct kernel_stat { 15032 unsigned int cpu_user, cpu_nice, cpu_system; 15033 unsigned int per_cpu_user[NR_CPUS], 15034 per_cpu_nice[NR_CPUS], 15035 per_cpu_system[NR_CPUS]; 15036 unsigned int dk_drive[DK_NDRIVE]; 15037 unsigned int dk_drive_rio[DK_NDRIVE]; 15038 unsigned int dk_drive_wio[DK_NDRIVE]; 15039 unsigned int dk_drive_rblk[DK_NDRIVE]; 15040 unsigned int dk_drive_wblk[DK_NDRIVE]; 15041 unsigned int pgpgin, pgpgout; 15042 unsigned int pswpin, pswpout; 15043 unsigned int irqs[NR_CPUS][NR_IRQS]; 15044 unsigned int ipackets, opackets; 15045 unsigned int ierrors, oerrors; 15046 unsigned int collisions; 15047 unsigned int context_swtch; 15048 }; 15049 15050 extern struct kernel_stat kstat; 15051 15052 /* # of interrupts per specific IRQ src, since bootup */ 15053 extern inline int kstat_irqs (int irq) 15054 { 15055 int i, sum=0; 15056 15057 for (i = 0 ; i < smp_num_cpus ; i++) 15058 sum += kstat.irqs[cpu_logical_map(i)][irq]; 15059 15060 return sum; 15061 } 15062 15063 #endif /* _LINUX_KERNEL_STAT_H */



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