On Wed, 12 Jun 2024 09:11:56 +0800 Hongbo Li <lihongb...@huawei.com> wrote:
> @@ -934,6 +943,12 @@ static int hugetlbfs_setattr(struct mnt_idmap *idmap, > if (error) > return error; > > + trace_hugetlbfs_setattr(inode, dentry->d_name.len, dentry->d_name.name, > + attr->ia_valid, attr->ia_mode, > + from_kuid(&init_user_ns, attr->ia_uid), > + from_kgid(&init_user_ns, attr->ia_gid), > + inode->i_size, attr->ia_size); > + That's a lot of parameters to pass to a tracepoint. Why not just pass the dentry and attr and do the above in the TP_fast_assign() logic? That would put less pressure on the icache for the code part. -- Steve
