powerpc-utils/SOURCES/powerpc-utils-73ba26-lparst...

37 lines
1.2 KiB
Diff

diff --git a/src/lparstat.c b/src/lparstat.c
index 31a4ee8..eebba1f 100644
--- a/src/lparstat.c
+++ b/src/lparstat.c
@@ -492,6 +492,15 @@ void get_cpu_util_purr(struct sysentry *unused_se, char *buf)
delta_purr = get_delta_value("purr");
delta_idle_purr = get_delta_value("idle_purr");
+ /*
+ * Given that these values are read from different
+ * sources (purr from lparcfg and idle_purr from sysfs),
+ * a small variation in the values is possible.
+ * In such cases, round down delta_idle_purr to delta_purr.
+ */
+ if (delta_idle_purr > delta_purr)
+ delta_idle_purr = delta_purr;
+
physc = (delta_purr - delta_idle_purr) / delta_tb;
physc *= 100.00;
@@ -507,6 +516,15 @@ void get_cpu_idle_purr(struct sysentry *unused_se, char *buf)
delta_purr = get_delta_value("purr");
delta_idle_purr = get_delta_value("idle_purr");
+ /*
+ * Given that these values are read from different
+ * sources (purr from lparcfg and idle_purr from sysfs),
+ * a small variation in the values is possible.
+ * In such cases, round down delta_idle_purr to delta_purr.
+ */
+ if (delta_idle_purr > delta_purr)
+ delta_idle_purr = delta_purr;
+
physc = (delta_purr - delta_idle_purr) / delta_tb;
idle = (delta_purr / delta_tb) - physc;
idle *= 100.00;