$NetBSD: patch-src_irq.c,v 1.1 2015/08/18 07:47:46 he Exp $

Provide a port to NetBSD.

--- src/irq.c.orig	2014-09-05 08:57:01.000000000 +0000
+++ src/irq.c
@@ -27,10 +27,22 @@
 #include "configfile.h"
 #include "utils_ignorelist.h"
 
-#if !KERNEL_LINUX
+#if !KERNEL_LINUX && !KERNEL_NETBSD
 # error "No applicable input method."
 #endif
 
+#if KERNEL_NETBSD
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/evcnt.h>
+#include <malloc.h>
+
+#endif /* KERNEL_NETBSD */
+
+
+
 /*
  * (Module-)Global variables
  */
@@ -90,6 +102,7 @@ static void irq_submit (const char *irq_
 	plugin_dispatch_values (&vl);
 } /* void irq_submit */
 
+#if KERNEL_LINUX
 static int irq_read (void)
 {
 	FILE *fh;
@@ -183,6 +196,63 @@ static int irq_read (void)
 
 	return (0);
 } /* int irq_read */
+#endif /* KERNEL_LINUX */
+
+#if KERNEL_NETBSD
+static int
+irq_read (void)
+{
+	const int mib[4] = {
+		CTL_KERN,
+		KERN_EVCNT,
+		EVCNT_TYPE_INTR,
+		KERN_EVCNT_COUNT_NONZERO
+	};
+	size_t buflen = 0;
+	void *buf = NULL;
+	const struct evcnt_sysctl *evs, *last_evs;
+
+	for (;;) {
+		size_t newlen;
+		int error;
+
+		if (buflen)
+			buf = malloc(buflen);
+		error = sysctl(mib, __arraycount(mib),
+			       buf, &newlen, NULL, 0);
+		if (error) {
+			ERROR("irq plugin: failed to get event count");
+			return -1;
+		}
+		if (newlen <= buflen) {
+			buflen = newlen;
+			break;
+		}
+		if (buf)
+			free(buf);
+		buflen = newlen;
+	}
+	evs = buf;
+	last_evs = (void*)((char *)buf + buflen);
+	buflen /= sizeof(uint64_t);
+	while(evs < last_evs
+	      && buflen > sizeof(*evs) / sizeof(uint64_t)
+	      && buflen >= evs->ev_len)
+	{
+		char irqname[80];
+
+		snprintf(irqname, 80, "%s-%s", evs->ev_strings,
+			 evs->ev_strings + evs->ev_grouplen + 1);
+
+		irq_submit(irqname, evs->ev_count);
+
+		buflen -= evs->ev_len;
+		evs =(const void*)((const uint64_t *)evs + evs->ev_len);
+	}
+	      
+	return 0;
+}
+#endif /* KERNEL_NETBSD */
 
 void module_register (void)
 {