sched/psi: Remove unused parameter nbytes of psi_trigger_create()

psi_trigger_create()'s 'nbytes' parameter is not used, so we can remove it.

Signed-off-by: Hao Jia <jiahao.os@bytedance.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/include/linux/psi.h b/include/linux/psi.h
index 8978476..dd74411 100644 (file)
--- a/include/linux/psi.h
+++ b/include/linux/psi.h
@@ -27,7 +27,7 @@ void psi_memstall_leave(unsigned long *flags);
 
 int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res);
 struct psi_trigger *psi_trigger_create(struct psi_group *group,
-                       char *buf, size_t nbytes, enum psi_res res);
+                       char *buf, enum psi_res res);
 void psi_trigger_destroy(struct psi_trigger *t);
 
 __poll_t psi_trigger_poll(void **trigger_ptr, struct file *file,

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index ffaccd6..df7df58 100644 (file)
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -3698,7 +3698,7 @@ static ssize_t cgroup_pressure_write(struct kernfs_open_file *of, char *buf,
        }
 
        psi = cgroup_ino(cgrp) == 1 ? &psi_system : cgrp->psi;
-       new = psi_trigger_create(psi, buf, nbytes, res);
+       new = psi_trigger_create(psi, buf, res);
        if (IS_ERR(new)) {
                cgroup_put(cgrp);
                return PTR_ERR(new);

diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c
index 5ee615a..ecb4b4f 100644 (file)
--- a/kernel/sched/psi.c
+++ b/kernel/sched/psi.c
@@ -1087,7 +1087,7 @@ int psi_show(struct seq_file *m, struct psi_group *group, enum psi_res res)
 }
 
 struct psi_trigger *psi_trigger_create(struct psi_group *group,
-                       char *buf, size_t nbytes, enum psi_res res)
+                       char *buf, enum psi_res res)
 {
        struct psi_trigger *t;
        enum psi_states state;
@@ -1316,7 +1316,7 @@ static ssize_t psi_write(struct file *file, const char __user *user_buf,
                return -EBUSY;
        }
 
-       new = psi_trigger_create(&psi_system, buf, nbytes, res);
+       new = psi_trigger_create(&psi_system, buf, res);
        if (IS_ERR(new)) {
                mutex_unlock(&seq->lock);
                return PTR_ERR(new);