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-rw-r--r--include/linux/btf.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/btf.h b/include/linux/btf.h
index e9b90d9c3569..49e0fe6d8274 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -73,6 +73,14 @@
#define KF_RCU (1 << 7) /* kfunc only takes rcu pointer arguments */
/*
+ * Tag marking a kernel function as a kfunc. This is meant to minimize the
+ * amount of copy-paste that kfunc authors have to include for correctness so
+ * as to avoid issues such as the compiler inlining or eliding either a static
+ * kfunc, or a global kfunc in an LTO build.
+ */
+#define __bpf_kfunc __used noinline
+
+/*
* Return the name of the passed struct, if exists, or halt the build if for
* example the structure gets renamed. In this way, developers have to revisit
* the code using that structure name, and update it accordingly.