Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 50 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/kernel_stat.h b/pfinet/linux-src/include/linux/kernel_stat.h
new file mode 100644
index 00000000..cd584c1a
--- /dev/null
+++ b/pfinet/linux-src/include/linux/kernel_stat.h
@@ -0,0 +1,50 @@
+#ifndef _LINUX_KERNEL_STAT_H
+#define _LINUX_KERNEL_STAT_H
+
+#include <asm/irq.h>
+#include <linux/smp.h>
+#include <linux/tasks.h>
+
+/*
+ * 'kernel_stat.h' contains the definitions needed for doing
+ * some kernel statistics (CPU usage, context switches ...),
+ * used by rstatd/perfmeter
+ */
+
+#define DK_NDRIVE 4
+
+struct kernel_stat {
+	unsigned int cpu_user, cpu_nice, cpu_system;	
+	unsigned int per_cpu_user[NR_CPUS],
+	             per_cpu_nice[NR_CPUS],
+	             per_cpu_system[NR_CPUS];
+	unsigned int dk_drive[DK_NDRIVE];
+	unsigned int dk_drive_rio[DK_NDRIVE];
+	unsigned int dk_drive_wio[DK_NDRIVE];
+	unsigned int dk_drive_rblk[DK_NDRIVE];
+	unsigned int dk_drive_wblk[DK_NDRIVE];
+	unsigned int pgpgin, pgpgout;
+	unsigned int pswpin, pswpout;
+	unsigned int irqs[NR_CPUS][NR_IRQS];
+	unsigned int ipackets, opackets;
+	unsigned int ierrors, oerrors;
+	unsigned int collisions;
+	unsigned int context_swtch;
+};
+
+extern struct kernel_stat kstat;
+
+/*
+ * Number of interrupts per specific IRQ source, since bootup
+ */
+extern 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 /* _LINUX_KERNEL_STAT_H */