x86/resctrl: Clean up unused function parameter in rmdir path

Commit

  fd8d9db3 ("x86/resctrl: Remove superfluous kernfs_get() calls to prevent refcount leak")

removed superfluous kernfs_get() calls in rdtgroup_ctrl_remove() and
rdtgroup_rmdir_ctrl(). That change resulted in an unused function
parameter to these two functions.

Clean up the unused function parameter in rdtgroup_ctrl_remove(),
rdtgroup_rmdir_mon() and their callers rdtgroup_rmdir_ctrl() and
rdtgroup_rmdir().
Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/1606759618-13181-1-git-send-email-xiaochen.shen@intel.com

arch/x86/kernel/cpu/resctrl/rdtgroup.c

@@ -3018,8 +3018,7 @@ static int rdtgroup_mkdir(struct kernfs_node *parent_kn, const char *name,
 	return -EPERM;
 }
 
-static int rdtgroup_rmdir_mon(struct kernfs_node *kn, struct rdtgroup *rdtgrp,
-			      cpumask_var_t tmpmask)
+static int rdtgroup_rmdir_mon(struct rdtgroup *rdtgrp, cpumask_var_t tmpmask)
 {
 	struct rdtgroup *prdtgrp = rdtgrp->mon.parent;
 	int cpu;
@@ -3051,8 +3050,7 @@ static int rdtgroup_rmdir_mon(struct kernfs_node *kn, struct rdtgroup *rdtgrp,
 	return 0;
 }
 
-static int rdtgroup_ctrl_remove(struct kernfs_node *kn,
-				struct rdtgroup *rdtgrp)
+static int rdtgroup_ctrl_remove(struct rdtgroup *rdtgrp)
 {
 	rdtgrp->flags = RDT_DELETED;
 	list_del(&rdtgrp->rdtgroup_list);
@@ -3061,8 +3059,7 @@ static int rdtgroup_ctrl_remove(struct kernfs_node *kn,
 	return 0;
 }
 
-static int rdtgroup_rmdir_ctrl(struct kernfs_node *kn, struct rdtgroup *rdtgrp,
-			       cpumask_var_t tmpmask)
+static int rdtgroup_rmdir_ctrl(struct rdtgroup *rdtgrp, cpumask_var_t tmpmask)
 {
 	int cpu;
 
@@ -3089,7 +3086,7 @@ static int rdtgroup_rmdir_ctrl(struct kernfs_node *kn, struct rdtgroup *rdtgrp,
 	closid_free(rdtgrp->closid);
 	free_rmid(rdtgrp->mon.rmid);
 
-	rdtgroup_ctrl_remove(kn, rdtgrp);
+	rdtgroup_ctrl_remove(rdtgrp);
 
 	/*
 	 * Free all the child monitor group rmids.
@@ -3126,13 +3123,13 @@ static int rdtgroup_rmdir(struct kernfs_node *kn)
 	    rdtgrp != &rdtgroup_default) {
 		if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP ||
 		    rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED) {
-			ret = rdtgroup_ctrl_remove(kn, rdtgrp);
+			ret = rdtgroup_ctrl_remove(rdtgrp);
 		} else {
-			ret = rdtgroup_rmdir_ctrl(kn, rdtgrp, tmpmask);
+			ret = rdtgroup_rmdir_ctrl(rdtgrp, tmpmask);
 		}
 	} else if (rdtgrp->type == RDTMON_GROUP &&
 		 is_mon_groups(parent_kn, kn->name)) {
-		ret = rdtgroup_rmdir_mon(kn, rdtgrp, tmpmask);
+		ret = rdtgroup_rmdir_mon(rdtgrp, tmpmask);
 	} else {
 		ret = -EPERM;
 	}