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tracefs: Annotate tracefs_ops with __ro_after_init 

tracefs_ops is initialized inside tracefs_create_instance_dir and not
modified after. tracefs_create_instance_dir allows for initialization
only once, and is called from create_trace_instances(marked __init),
which is called from tracer_init_tracefs(marked __init). Also, mark
tracefs_create_instance_dir as __init.

Link: http://lkml.kernel.org/r/20180725171901.4468-1-zsm@chromium.org

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
hifive-unleashed-5.1
Zubin Mithra 2018-07-25 10:19:01 -07:00 committed by Steven Rostedt (VMware)
parent c3bc8fd637
commit 5248ee8560
1 changed files with 3 additions and 2 deletions
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5
fs/tracefs/inode.c
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@ -53,7 +53,7 @@ static const struct file_operations tracefs_file_operations = {
static struct tracefs_dir_ops {
int (*mkdir)(const char *name);
int (*rmdir)(const char *name);
} tracefs_ops;
} tracefs_ops __ro_after_init;
static char *get_dname(struct dentry *dentry)
{
@ -478,7 +478,8 @@ struct dentry *tracefs_create_dir(const char *name, struct dentry *parent)
*
* Returns the dentry of the instances directory.
*/
struct dentry *tracefs_create_instance_dir(const char *name, struct dentry *parent,
__init struct dentry *tracefs_create_instance_dir(const char *name,
struct dentry *parent,
int (*mkdir)(const char *name),
int (*rmdir)(const char *name))
{