[PATCH 5/9] x86/mm: Switch to kvfree_rcu() API

[Uladzislau Rezki (Sony)]

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@xxxxxxxxxxx>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
---
 arch/x86/mm/mmio-mod.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index 933a2ebad471..e75137a06c32 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -307,10 +307,8 @@ static void iounmap_trace_core(volatile void __iomem *addr)
 
 not_enabled:
 	spin_unlock_irq(&trace_lock);
-	if (found_trace) {
-		synchronize_rcu(); /* unregister_kmmio_probe() requirement */
-		kfree(found_trace);
-	}
+	if (found_trace)
+		kvfree_rcu(found_trace); /* unregister_kmmio_probe() requirement */
 }
 
 void mmiotrace_iounmap(volatile void __iomem *addr)
-- 
2.30.2