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path: root/fs/proc/softirqs.c
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Diffstat (limited to 'fs/proc/softirqs.c')
-rw-r--r--fs/proc/softirqs.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/proc/softirqs.c b/fs/proc/softirqs.c
new file mode 100644
index 00000000000..1807c2419f1
--- /dev/null
+++ b/fs/proc/softirqs.c
@@ -0,0 +1,44 @@
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+/*
+ * /proc/softirqs ... display the number of softirqs
+ */
+static int show_softirqs(struct seq_file *p, void *v)
+{
+ int i, j;
+
+ seq_printf(p, " ");
+ for_each_possible_cpu(i)
+ seq_printf(p, "CPU%-8d", i);
+ seq_printf(p, "\n");
+
+ for (i = 0; i < NR_SOFTIRQS; i++) {
+ seq_printf(p, "%8s:", softirq_to_name[i]);
+ for_each_possible_cpu(j)
+ seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
+ seq_printf(p, "\n");
+ }
+ return 0;
+}
+
+static int softirqs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, show_softirqs, NULL);
+}
+
+static const struct file_operations proc_softirqs_operations = {
+ .open = softirqs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init proc_softirqs_init(void)
+{
+ proc_create("softirqs", 0, NULL, &proc_softirqs_operations);
+ return 0;
+}
+module_init(proc_softirqs_init);