From: Florian Forster <octo@collectd.org>
Date: Fri, 26 Sep 2014 02:10:32 +0000 (-0700)
Subject: cpu plugin: Don't report empty cpu states.
X-Git-Tag: collectd-5.5.0~174
X-Git-Url: https://git.octo.it/?a=commitdiff_plain;h=30cfed83c4d662a0996b49fe48eeb9a3ddd09944;p=collectd.git

cpu plugin: Don't report empty cpu states.
---

diff --git a/src/cpu.c b/src/cpu.c
index 475d18ac..fae7ab9a 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -343,6 +343,12 @@ static void submit_percent(int cpu_num, int cpu_state, gauge_t percent)
 {
 	value_t value;
 
+	/* This function is called for all known CPU states, but each read
+	 * method will only report a subset. The remaining states are left as
+	 * NAN and we ignore them here. */
+	if (isnan (percent))
+		return;
+
 	value.gauge = percent;
 	submit_value (cpu_num, cpu_state, "percent", value);
 }
@@ -362,9 +368,6 @@ static int cpu_states_alloc (size_t cpu_num) /* {{{ */
 	cpu_state_t *tmp;
 	size_t sz;
 
-	if (cpu_num < 0)
-		return (EINVAL);
-
 	sz = (((size_t) cpu_num) + 1) * CPU_STATE_MAX;
 	assert (sz > 0);