From: Tomasz Pala <gotar@pld-linux.org>
Date: Sat, 18 Apr 2009 15:45:01 +0000 (+0200)
Subject: irq plugin: Parse interrupt counters as unsigned long long.
X-Git-Tag: collectd-4.5.4~17
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=ac1aa530ff9c875068e69991f6cfa7f46ea10aaf

irq plugin: Parse interrupt counters as unsigned long long.

Hello,

attached patch fixes accounting of most frequent interrupts (like NICs
on routers). E.g. in my case:

213:      76266      76357      76250      76397 2408617852 2411844062 2411642538 2411814531   PCI-MSI-edge      eth1
214: 2621368360 2621463385 2621343444 2621386931    2349184         28         35         32   PCI-MSI-edge      eth0

Here LONG_MAX (2147483647L) overflows in 10 days uptime and strtol()
returns the same value.

As all the values (including counter_t) are unsigned long long int, the
fix is trivial (for now there's no need to check for irq_value overflow;>).

--
Tomasz Pala <gotar@pld-linux.org>

Signed-off-by: Florian Forster <octo@leeloo.lan.home.verplant.org>
---

diff --git a/src/irq.c b/src/irq.c
index 9b7e6187..38304fca 100644
--- a/src/irq.c
+++ b/src/irq.c
@@ -152,8 +152,8 @@ static int irq_read (void)
 	FILE *fh;
 	char buffer[BUFSIZE];
 	unsigned int irq;
-	unsigned int irq_value;
-	long value;
+	unsigned long long irq_value;
+	unsigned long long value;
 	char *endptr;
 	int i;
 
@@ -183,7 +183,7 @@ static int irq_read (void)
 		for (i = 1; i < fields_num; i++)
 		{
 			errno = 0;
-			value = strtol (fields[i], &endptr, 10);
+			value = strtoull (fields[i], &endptr, 10);
 
 			if ((*endptr != '\0') || (errno != 0))
 				break;