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-rw-r--r--kernel/bpf/helpers.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 95eb59a045ea..bd7f5988ed9c 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -12,6 +12,7 @@
#include <linux/bpf.h>
#include <linux/rcupdate.h>
#include <linux/random.h>
+#include <linux/smp.h>
/* If kernel subsystem is allowing eBPF programs to call this function,
* inside its own verifier_ops->get_func_proto() callback it should return
@@ -99,3 +100,14 @@ const struct bpf_func_proto bpf_get_prandom_u32_proto = {
.gpl_only = false,
.ret_type = RET_INTEGER,
};
+
+static u64 bpf_get_smp_processor_id(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5)
+{
+ return raw_smp_processor_id();
+}
+
+const struct bpf_func_proto bpf_get_smp_processor_id_proto = {
+ .func = bpf_get_smp_processor_id,
+ .gpl_only = false,
+ .ret_type = RET_INTEGER,
+};