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Subject[PATCH 9/9] tracing: Switch to kvfree_rcu() API
Date
Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

CC: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
kernel/trace/trace_osnoise.c | 3 +--
kernel/trace/trace_probe.c | 3 +--
2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 7520d43aed55..4719a848bf17 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -138,8 +138,7 @@ static void osnoise_unregister_instance(struct trace_array *tr)
if (!found)
return;

- synchronize_rcu();
- kfree(inst);
+ kvfree_rcu(inst);
}

/*
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 3ed2a3f37297..8a3822818bf8 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -1138,8 +1138,7 @@ int trace_probe_remove_file(struct trace_probe *tp,
return -ENOENT;

list_del_rcu(&link->list);
- synchronize_rcu();
- kfree(link);
+ kvfree_rcu(link);

if (list_empty(&tp->event->files))
trace_probe_clear_flag(tp, TP_FLAG_TRACE);
--
2.30.2
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