This was added in kernel 3.16 in commit beba4bb096201 ("tracing: Add
__get_dynamic_array_len() macro for trace events")
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
backport/backport-include/trace/ftrace.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/backport/backport-include/trace/ftrace.h b/backport/backport-include/trace/ftrace.h
index 5fda0ce5..2daedd55 100644
--- a/backport/backport-include/trace/ftrace.h
+++ b/backport/backport-include/trace/ftrace.h
@@ -6,4 +6,8 @@
ftrace_print_array_seq(p, array, count, el_size); \
})
+#undef __get_dynamic_array_len
+#define __get_dynamic_array_len(field) \
+ ((__entry->__data_loc_##field >> 16) & 0xffff)
+
#include_next <trace/ftrace.h>
--
2.11.0
--
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