From: Ruben Kerkhof <ruben@rubenkerkhof.com>
Date: Sun, 2 Aug 2015 18:54:51 +0000 (+0200)
Subject: irq: skip FIQ line in /proc/interrupts
X-Git-Tag: collectd-5.5.1~68^2~4
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=91fbf283d2c180105c4729907ea9d2079c6d93f7;p=collectd.git

irq: skip FIQ line in /proc/interrupts

/proc/interrupts on my Raspberry PI contains:
FIQ:              usb_fiq

This line doesn't contain any per cpu counters
but we try to parse it anyway, resulting in:
parse_value: Failed to parse string as derive: usb_fiq.

Fixes #971
---

diff --git a/src/irq.c b/src/irq.c
index 1168b979..6afacf0d 100644
--- a/src/irq.c
+++ b/src/irq.c
@@ -155,6 +155,10 @@ static int irq_read (void)
 		if (irq_name[irq_name_len - 1] != ':')
 			continue;
 
+		/* Is it the the ARM fast interrupt (FIQ)? */
+		if (irq_name_len == 4 && (strncmp(irq_name, "FIQ:", 4) == 0))
+			continue;
+
 		irq_name[irq_name_len - 1] = 0;
 		irq_name_len--;