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authorJiri Olsa <[email protected]>2021-12-06 19:20:31 +0100
committerSteven Rostedt (VMware) <[email protected]>2021-12-08 12:12:02 -0500
commitfea3ffa48c6d42a11dca766c89284d22eaf5603f (patch)
treead54cc756325d4e0cd30e803d96043eb482f60bb
parent7d5b7cad79da76f3dad4a9f6040e524217814e5a (diff)
ftrace: Add cleanup to unregister_ftrace_direct_multi
Adding ops cleanup to unregister_ftrace_direct_multi, so it can be reused in another register call. Link: https://lkml.kernel.org/r/[email protected] Cc: Ingo Molnar <[email protected]> Cc: Heiko Carstens <[email protected]> Fixes: f64dd4627ec6 ("ftrace: Add multi direct register/unregister interface") Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
-rw-r--r--kernel/trace/ftrace.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 7f0594e28226..be5f6b32a012 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5542,6 +5542,10 @@ int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr)
err = unregister_ftrace_function(ops);
remove_direct_functions_hash(hash, addr);
mutex_unlock(&direct_mutex);
+
+ /* cleanup for possible another register call */
+ ops->func = NULL;
+ ops->trampoline = 0;
return err;
}
EXPORT_SYMBOL_GPL(unregister_ftrace_direct_multi);