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tracefs: Add directory /sys/kernel/tracing

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When tracefs is configured, have the directory /sys/kernel/tracing appear
just like /sys/kernel/debug appears when debugfs is configured.

This will give a consistent place for system admins to mount tracefs.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2015-01-21 11:28:23 -05:00 committed by Steven Rostedt
parent f76180bc07
commit cc31004a4a
1 changed files with 7 additions and 0 deletions
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7
fs/tracefs/inode.c
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@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/kobject.h>
#include <linux/namei.h>
#include <linux/tracefs.h>
#include <linux/fsnotify.h>
@ -509,10 +510,16 @@ bool tracefs_initialized(void)
return tracefs_registered;
}
static struct kobject *trace_kobj;
static int __init tracefs_init(void)
{
int retval;
trace_kobj = kobject_create_and_add("tracing", kernel_kobj);
if (!trace_kobj)
return -EINVAL;
retval = register_filesystem(&trace_fs_type);
if (!retval)
tracefs_registered = true;