sched: guest CPU accounting: add guest-CPU /proc/stat field
as recent CPUs introduce a third running state, after "user" and
"system", we need a new field, "guest", in cpustat to store the time
used by the CPU to run virtual CPU. Modify /proc/stat to display this
new field.
Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Acked-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index bee251c..b872a01 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -443,6 +443,7 @@
int i;
unsigned long jif;
cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
+ cputime64_t guest;
u64 sum = 0;
struct timespec boottime;
unsigned int *per_irq_sum;
@@ -453,6 +454,7 @@
user = nice = system = idle = iowait =
irq = softirq = steal = cputime64_zero;
+ guest = cputime64_zero;
getboottime(&boottime);
jif = boottime.tv_sec;
@@ -467,6 +469,7 @@
irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
+ guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
for (j = 0; j < NR_IRQS; j++) {
unsigned int temp = kstat_cpu(i).irqs[j];
sum += temp;
@@ -474,7 +477,7 @@
}
}
- seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu\n",
+ seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
(unsigned long long)cputime64_to_clock_t(user),
(unsigned long long)cputime64_to_clock_t(nice),
(unsigned long long)cputime64_to_clock_t(system),
@@ -482,7 +485,8 @@
(unsigned long long)cputime64_to_clock_t(iowait),
(unsigned long long)cputime64_to_clock_t(irq),
(unsigned long long)cputime64_to_clock_t(softirq),
- (unsigned long long)cputime64_to_clock_t(steal));
+ (unsigned long long)cputime64_to_clock_t(steal),
+ (unsigned long long)cputime64_to_clock_t(guest));
for_each_online_cpu(i) {
/* Copy values here to work around gcc-2.95.3, gcc-2.96 */
@@ -494,7 +498,9 @@
irq = kstat_cpu(i).cpustat.irq;
softirq = kstat_cpu(i).cpustat.softirq;
steal = kstat_cpu(i).cpustat.steal;
- seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
+ guest = kstat_cpu(i).cpustat.guest;
+ seq_printf(p,
+ "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
i,
(unsigned long long)cputime64_to_clock_t(user),
(unsigned long long)cputime64_to_clock_t(nice),
@@ -503,7 +509,8 @@
(unsigned long long)cputime64_to_clock_t(iowait),
(unsigned long long)cputime64_to_clock_t(irq),
(unsigned long long)cputime64_to_clock_t(softirq),
- (unsigned long long)cputime64_to_clock_t(steal));
+ (unsigned long long)cputime64_to_clock_t(steal),
+ (unsigned long long)cputime64_to_clock_t(guest));
}
seq_printf(p, "intr %llu", (unsigned long long)sum);