Thread (3 messages) 3 messages, 2 authors, 2023-03-16

[PATCH v2 03/14] tracing: Rename kvfree_rcu() to kvfree_rcu_mightsleep()

STALE1283d

From: Joel Fernandes (Google) <hidden>
Date: 2023-03-15 18:19:38
Also in: lkml
Subsystem: the rest, tracing, tracing os noise / latency tracers · Maintainers: Linus Torvalds, Steven Rostedt, Masami Hiramatsu

From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>

The kvfree_rcu() macro's single-argument form is deprecated.  Therefore
switch to the new kvfree_rcu_mightsleep() variant. The goal is to
avoid accidental use of the single-argument forms, which can introduce
functionality bugs in atomic contexts and latency bugs in non-atomic
contexts.

Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <redacted>
---
 kernel/trace/trace_osnoise.c | 2 +-
 kernel/trace/trace_probe.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 04f0fdae19a1..f68ca1e6460f 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -159,7 +159,7 @@ static void osnoise_unregister_instance(struct trace_array *tr)
 	if (!found)
 		return;
 
-	kvfree_rcu(inst);
+	kvfree_rcu_mightsleep(inst);
 }
 
 /*
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 20d0c4a97633..2d2616678295 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -1172,7 +1172,7 @@ int trace_probe_remove_file(struct trace_probe *tp,
 		return -ENOENT;
 
 	list_del_rcu(&link->list);
-	kvfree_rcu(link);
+	kvfree_rcu_mightsleep(link);
 
 	if (list_empty(&tp->event->files))
 		trace_probe_clear_flag(tp, TP_FLAG_TRACE);
-- 
2.40.0.rc1.284.g88254d51c5-goog
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help