[PATCH 50/74] headers: add __vstring and __assign_vstr
Johannes Berg <[email protected]> Fri, 24 May 2024 19:08:02 +0200
| Newsgroups | org.kernel.vger.backports |
|---|---|
| Message-ID | <20240524190907.67ec030e44de.I027a0b45d32f671a7eaa83ff3b6213978df4a4b1@changeid> |
From: Felix Fietkau <[email protected]> Used within tracepoints on a few drivers Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: Johannes Berg <[email protected]> --- backport/backport-include/trace/trace_events.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 backport/backport-include/trace/trace_events.h diff --git a/backport/backport-include/trace/trace_events.h b/backport/backport-include/trace/trace_events.h new file mode 100644 index 000000000000..fd6a4f3c343d --- /dev/null +++ b/backport/backport-include/trace/trace_events.h @@ -0,0 +1,16 @@ +#include <linux/version.h> + +#if LINUX_VERSION_IS_LESS(6,0,0) +#undef VSTRING_MSG_MAX +#define VSTRING_MSG_MAX 512 + +#undef __vstring +#define __vstring(msg, fmt, va) __dynamic_array(char, msg, VSTRING_MSG_MAX) + +#undef __assign_vstr +#define __assign_vstr(msg, fmt, va) \ + WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg), VSTRING_MSG_MAX, \ + fmt, *va) >= VSTRING_MSG_MAX) +#endif /* <6.0 */ + +#include_next <trace/trace_events.h> -- 2.45.1