Since it is necessary to count and record the real utilization of the sq
thread, it is recorded in the /proc/stat file.
Signed-off-by: Xiaobing Li <[email protected]>
---
fs/proc/stat.c | 25 ++++++++++++++++++++++++-
include/linux/kernel_stat.h | 3 +++
2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index da60956b2915..bd86c0657874 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -79,6 +79,29 @@ static void show_all_irqs(struct seq_file *p)
show_irq_gap(p, nr_irqs - next);
}
+static void show_sqthread_util(struct seq_file *p)
+{
+ int i, j;
+
+ for_each_online_cpu(i) {
+ struct kernel_cpustat kcpustat;
+
+ kcpustat_cpu_fetch(&kcpustat, i);
+ struct task_struct **sqstat = kcpustat.sq_util;
+
+ for (j = 0; j < MAX_SQ_NUM; j++) {
+ if (sqstat[j]) {
+ seq_printf(p, "%d %s", sqstat[j]->pid, sqstat[j]->comm);
+ seq_put_decimal_ull(p, " pelt ",
+ (unsigned long long)sqstat[j]->se.avg.util_avg);
+ seq_put_decimal_ull(p, " real ",
+ (unsigned long long)sqstat[j]->se.sq_avg.util_avg);
+ seq_putc(p, '\n');
+ }
+ }
+ }
+}
+
static int show_stat(struct seq_file *p, void *v)
{
int i, j;
@@ -187,7 +210,7 @@ static int show_stat(struct seq_file *p, void *v)
for (i = 0; i < NR_SOFTIRQS; i++)
seq_put_decimal_ull(p, " ", per_softirq_sums[i]);
seq_putc(p, '\n');
-
+ show_sqthread_util(p);
return 0;
}
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 9935f7ecbfb9..722703da681e 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -11,6 +11,7 @@
#include <linux/vtime.h>
#include <asm/irq.h>
+#define MAX_SQ_NUM 16
/*
* 'kernel_stat.h' contains the definitions needed for doing
* some kernel statistics (CPU usage, context switches ...),
@@ -36,6 +37,8 @@ enum cpu_usage_stat {
struct kernel_cpustat {
u64 cpustat[NR_STATS];
+ bool flag;
+ struct task_struct *sq_util[MAX_SQ_NUM];
};
struct kernel_stat {
--
2.34.1