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-rw-r--r--fs/proc/proc_misc.c40
1 files changed, 19 insertions, 21 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 61b25f4eabe6..7ea52c79b2da 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -30,6 +30,7 @@
#include <linux/mm.h>
#include <linux/mmzone.h>
#include <linux/pagemap.h>
+#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/swap.h>
#include <linux/slab.h>
@@ -521,17 +522,13 @@ static const struct file_operations proc_vmalloc_operations = {
static int show_stat(struct seq_file *p, void *v)
{
- int i;
+ int i, j;
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;
-
- per_irq_sum = kzalloc(sizeof(unsigned int)*NR_IRQS, GFP_KERNEL);
- if (!per_irq_sum)
- return -ENOMEM;
+ unsigned int per_irq_sum;
user = nice = system = idle = iowait =
irq = softirq = steal = cputime64_zero;
@@ -540,8 +537,6 @@ static int show_stat(struct seq_file *p, void *v)
jif = boottime.tv_sec;
for_each_possible_cpu(i) {
- int j;
-
user = cputime64_add(user, kstat_cpu(i).cpustat.user);
nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
system = cputime64_add(system, kstat_cpu(i).cpustat.system);
@@ -551,11 +546,10 @@ static int show_stat(struct seq_file *p, void *v)
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;
- per_irq_sum[j] += temp;
- }
+
+ for_each_irq_nr(j)
+ sum += kstat_irqs_cpu(j, i);
+
sum += arch_irq_stat_cpu(i);
}
sum += arch_irq_stat();
@@ -597,8 +591,15 @@ static int show_stat(struct seq_file *p, void *v)
}
seq_printf(p, "intr %llu", (unsigned long long)sum);
- for (i = 0; i < NR_IRQS; i++)
- seq_printf(p, " %u", per_irq_sum[i]);
+ /* sum again ? it could be updated? */
+ for_each_irq_nr(j) {
+ per_irq_sum = 0;
+
+ for_each_possible_cpu(i)
+ per_irq_sum += kstat_irqs_cpu(j, i);
+
+ seq_printf(p, " %u", per_irq_sum);
+ }
seq_printf(p,
"\nctxt %llu\n"
@@ -612,7 +613,6 @@ static int show_stat(struct seq_file *p, void *v)
nr_running(),
nr_iowait());
- kfree(per_irq_sum);
return 0;
}
@@ -651,15 +651,14 @@ static const struct file_operations proc_stat_operations = {
*/
static void *int_seq_start(struct seq_file *f, loff_t *pos)
{
- return (*pos <= NR_IRQS) ? pos : NULL;
+ return (*pos <= nr_irqs) ? pos : NULL;
}
+
static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
{
(*pos)++;
- if (*pos > NR_IRQS)
- return NULL;
- return pos;
+ return (*pos <= nr_irqs) ? pos : NULL;
}
static void int_seq_stop(struct seq_file *f, void *v)
@@ -667,7 +666,6 @@ static void int_seq_stop(struct seq_file *f, void *v)
/* Nothing to do */
}
-
static const struct seq_operations int_seq_ops = {
.start = int_seq_start,
.next = int_seq_next,