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authorZubin Mithra <zsm@chromium.org>2018-07-25 19:19:01 +0200
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2018-07-31 17:32:44 +0200
commit5248ee85603067e62a228402afd2fb68f957746b (patch)
tree2f9c99ec03cf8189bf1323ed80f3e04f34189ea3 /fs/tracefs
parenttracing: Centralize preemptirq tracepoints and unify their usage (diff)
downloadlinux-5248ee85603067e62a228402afd2fb68f957746b.tar.xz
linux-5248ee85603067e62a228402afd2fb68f957746b.zip
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>
Diffstat (limited to 'fs/tracefs')
-rw-r--r--fs/tracefs/inode.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
index bea8ad876bf9..7098c49f3693 100644
--- a/fs/tracefs/inode.c
+++ b/fs/tracefs/inode.c
@@ -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))
{