X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fcontextswitch.c;h=c207318f9d62425fbfb18e7e86727bce62b65bcb;hb=bec423a136b879dc53e9123f7e8b94c7ef6097a2;hp=f571d39c39201c174d0cfea1ba68054a6565ad0d;hpb=5faee1b80e2718c7c12801439af1a6a6729c0b8d;p=collectd.git

diff --git a/src/contextswitch.c b/src/contextswitch.c
index f571d39c..c207318f 100644
--- a/src/contextswitch.c
+++ b/src/contextswitch.c
@@ -59,29 +59,31 @@ static void cs_submit (derive_t context_switches)
 
 static int cs_read (void)
 {
-	int status = -2;
 #if HAVE_SYSCTLBYNAME
-	int value;
+	int value = 0;
 	size_t value_len = sizeof (value);
+	int status;
 
-	if (sysctlbyname ("vm.stats.sys.v_swtch", (void *) &value, &value_len,
-			NULL, 0) == 0)
-	{
-		cs_submit(value);
-		status = 0;
-	}
-	else
+	status = sysctlbyname ("vm.stats.sys.v_swtch",
+			&value, &value_len,
+			/* new pointer = */ NULL, /* new length = */ 0);
+	if (status != 0)
 	{
-		ERROR("contextswitch plugin: sysctlbyname failed");
+		ERROR("contextswitch plugin: sysctlbyname "
+				"(vm.stats.sys.v_swtch) failed");
+		return (-1);
 	}
 
+	cs_submit (value);
 /* #endif HAVE_SYSCTLBYNAME */
+
 #elif KERNEL_LINUX
 	FILE *fh;
 	char buffer[64];
 	int numfields;
 	char *fields[3];
 	derive_t result = 0;
+	int status = -2;
 
 	fh = fopen ("/proc/stat", "r");
 	if (fh == NULL) {