On 9/6/2022 3:31 AM, Shakeel Butt wrote:
On Tue, Sep 06, 2022 at 03:35:16AM +0800, Jiebin Sun wrote:
Add percpu_counter_add_local for only updating local counter
without aggregating to global counter.
Please add why do we need this. Who should use this and who shouldn't.
Thanks. I have added the code comment and change log in patch v3 and
provided
the info who should use it and who shouldn't.
Signed-off-by: Jiebin Sun <jiebin.sun@xxxxxxxxx>
[...]
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index ed610b75dc32..d33cb750962a 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -72,6 +72,12 @@ void percpu_counter_set(struct percpu_counter *fbc, s64 amount)
}
EXPORT_SYMBOL(percpu_counter_set);
Add a doc comment here on why someone want to use this?
+void percpu_counter_add_local(struct percpu_counter *fbc, s64 amount)
+{
+ this_cpu_add(*fbc->counters, amount);
+}
+EXPORT_SYMBOL(percpu_counter_add_local);
+
/*
* This function is both preempt and irq safe. The former is due to explicit
* preemption disable. The latter is guaranteed by the fact that the slow path
--
2.31.1
