From fa96b24204af42274ec13dfb2f2e6990d7510e55 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Fri, 5 Aug 2022 14:48:14 -0700 Subject: btf: Add a new kfunc flag which allows to mark a function to be sleepable This allows to declare a kfunc as sleepable and prevents its use in a non sleepable program. Signed-off-by: Benjamin Tissoires Co-developed-by: Yosry Ahmed Signed-off-by: Yosry Ahmed Signed-off-by: Hao Luo Link: https://lore.kernel.org/r/20220805214821.1058337-2-haoluo@google.com Signed-off-by: Alexei Starovoitov --- include/linux/btf.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/btf.h b/include/linux/btf.h index cdb376d53238..976cbdd2981f 100644 --- a/include/linux/btf.h +++ b/include/linux/btf.h @@ -49,6 +49,7 @@ * for this case. */ #define KF_TRUSTED_ARGS (1 << 4) /* kfunc only takes trusted pointer arguments */ +#define KF_SLEEPABLE (1 << 5) /* kfunc may sleep */ struct btf; struct btf_member; -- cgit v1.2.3