Add an entry in /proc/scheduler which reads out the running cpu scheduler's
name.

Signed-off-by: Con Kolivas <kernel@kolivas.org>


Index: linux-2.6.10-rc1-mm2-plugsched1/fs/proc/proc_misc.c
===================================================================
--- linux-2.6.10-rc1-mm2-plugsched1.orig/fs/proc/proc_misc.c	2004-10-30 00:19:30.452320081 +1000
+++ linux-2.6.10-rc1-mm2-plugsched1/fs/proc/proc_misc.c	2004-10-30 00:20:14.086339759 +1000
@@ -45,6 +45,7 @@
 #include <linux/sysrq.h>
 #include <linux/vmalloc.h>
 #include <linux/crash_dump.h>
+#include <linux/sched.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
@@ -265,6 +266,18 @@ static int version_read_proc(char *page,
 	return proc_calc_metrics(page, start, off, count, eof, len);
 }
 
+static int scheduler_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	char *sched_name = scheduler->cpusched_name;
+	int len;
+
+	strcpy(page, sched_name);
+	strcat(page, "\n");
+	len = strlen(page);
+	return proc_calc_metrics(page, start, off, count, eof, len);
+}
+
 extern struct seq_operations cpuinfo_op;
 static int cpuinfo_open(struct inode *inode, struct file *file)
 {
@@ -608,6 +621,7 @@ void __init proc_misc_init(void)
 		{"cmdline",	cmdline_read_proc},
 		{"locks",	locks_read_proc},
 		{"execdomains",	execdomains_read_proc},
+		{"scheduler",	scheduler_read_proc},
 		{NULL,}
 	};
 	for (p = simple_ones; p->name; p++)