Previous patches removed the only caller of cgroup_rstat_flush_atomic().
Remove the function and simplify the code.
Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
---
include/linux/cgroup.h | 1 -
kernel/cgroup/rstat.c | 26 +++++---------------------
2 files changed, 5 insertions(+), 22 deletions(-)
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 885f5395fcd0..567c547cf371 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -692,7 +692,6 @@ static inline void cgroup_path_from_kernfs_id(u64 id, char *buf, size_t buflen)
*/
void cgroup_rstat_updated(struct cgroup *cgrp, int cpu);
void cgroup_rstat_flush(struct cgroup *cgrp);
-void cgroup_rstat_flush_atomic(struct cgroup *cgrp);
void cgroup_rstat_flush_hold(struct cgroup *cgrp);
void cgroup_rstat_flush_release(void);
diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c
index d3252b0416b6..f9ad33f117c8 100644
--- a/kernel/cgroup/rstat.c
+++ b/kernel/cgroup/rstat.c
@@ -171,7 +171,7 @@ __weak noinline void bpf_rstat_flush(struct cgroup *cgrp,
__diag_pop();
/* see cgroup_rstat_flush() */
-static void cgroup_rstat_flush_locked(struct cgroup *cgrp, bool may_sleep)
+static void cgroup_rstat_flush_locked(struct cgroup *cgrp)
__releases(&cgroup_rstat_lock) __acquires(&cgroup_rstat_lock)
{
int cpu;
@@ -207,9 +207,8 @@ static void cgroup_rstat_flush_locked(struct cgroup *cgrp, bool may_sleep)
}
raw_spin_unlock_irqrestore(cpu_lock, flags);
- /* if @may_sleep, play nice and yield if necessary */
- if (may_sleep && (need_resched() ||
- spin_needbreak(&cgroup_rstat_lock))) {
+ /* play nice and yield if necessary */
+ if (need_resched() || spin_needbreak(&cgroup_rstat_lock)) {
spin_unlock_irq(&cgroup_rstat_lock);
if (!cond_resched())
cpu_relax();
@@ -236,25 +235,10 @@ __bpf_kfunc void cgroup_rstat_flush(struct cgroup *cgrp)
might_sleep();
spin_lock_irq(&cgroup_rstat_lock);
- cgroup_rstat_flush_locked(cgrp, true);
+ cgroup_rstat_flush_locked(cgrp);
spin_unlock_irq(&cgroup_rstat_lock);
}
-/**
- * cgroup_rstat_flush_atomic- atomic version of cgroup_rstat_flush()
- * @cgrp: target cgroup
- *
- * This function can be called from any context.
- */
-void cgroup_rstat_flush_atomic(struct cgroup *cgrp)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&cgroup_rstat_lock, flags);
- cgroup_rstat_flush_locked(cgrp, false);
- spin_unlock_irqrestore(&cgroup_rstat_lock, flags);
-}
-
/**
* cgroup_rstat_flush_hold - flush stats in @cgrp's subtree and hold
* @cgrp: target cgroup
@@ -269,7 +253,7 @@ void cgroup_rstat_flush_hold(struct cgroup *cgrp)
{
might_sleep();
spin_lock_irq(&cgroup_rstat_lock);
- cgroup_rstat_flush_locked(cgrp, true);
+ cgroup_rstat_flush_locked(cgrp);
}
/**
--
2.40.0.634.g4ca3ef3211-goog
