From 940cfea4270436edf515bf07d0a778eed6cec16d Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Fri, 9 Jan 2026 16:31:42 +0100 Subject: [PATCH] s390/bug: Implement WARN_ONCE() This is the s390 variant of commit 11bb4944f014 ("x86/bug: Implement WARN_ONCE()"). Reviewed-by: Sven Schnelle Signed-off-by: Heiko Carstens --- arch/s390/include/asm/bug.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h index 1559873b19b09..1fbcbdbc595fe 100644 --- a/arch/s390/include/asm/bug.h +++ b/arch/s390/include/asm/bug.h @@ -104,6 +104,17 @@ do { \ #define __WARN_printf(taint, fmt, arg...) \ __WARN_print_arg(BUGFLAG_TAINT(taint), fmt, ## arg) +#define WARN_ONCE(cond, format, arg...) \ +({ \ + int __ret_warn_on = !!(cond); \ + \ + if (unlikely(__ret_warn_on)) { \ + __WARN_print_arg(BUGFLAG_ONCE|BUGFLAG_TAINT(TAINT_WARN),\ + format, ## arg); \ + } \ + __ret_warn_on; \ +}) + #define HAVE_ARCH_BUG #define HAVE_ARCH_BUG_FORMAT #define HAVE_ARCH_BUG_FORMAT_ARGS -- 2.47.3