This adds WARN_ONCE from the Linux Kernel. It is useful to warn only once when we would otherwise spam the log.
Signed-off-by: Sascha Hauer <[email protected]> --- include/asm-generic/bug.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index 8583d2425f..82b78261fc 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -34,4 +34,17 @@ unlikely(__ret_warn_on); \ }) #endif + +#define WARN_ONCE(condition, format...) ({ \ + static int __warned; \ + int __ret_warn_once = !!(condition); \ + \ + if (unlikely(__ret_warn_once)) { \ + if (WARN(!__warned, format)) { \ + __warned = 1; \ + dump_stack(); \ + } \ + } \ + unlikely(__ret_warn_once); \ +}) #endif -- 2.27.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
