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bug: Implement WARN_ON() using __WARN_FLAGS()

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This completes 3bc3c9c3ab ("bugs/core: Pass down the condition
string of WARN_ON_ONCE(cond) warnings to __WARN_FLAGS()") and makes
WARN_ON() and WARN_ON_ONCE() behaviour consistent.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251110115757.690999560@infradead.org
This commit is contained in:
Peter Zijlstra 2025-11-10 11:58:37 +01:00
parent 7d2c27a0ec
commit 3fd45b871f
1 changed files with 21 additions and 7 deletions
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28
include/asm-generic/bug.h
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@ -109,22 +109,36 @@ extern __printf(1, 2) void __warn_printk(const char *fmt, ...);
} while (0)
#else
#define __WARN() __WARN_FLAGS("", BUGFLAG_TAINT(TAINT_WARN))
#define __WARN_printf(taint, arg...) do { \
instrumentation_begin(); \
__warn_printk(arg); \
__WARN_FLAGS("", BUGFLAG_NO_CUT_HERE | BUGFLAG_TAINT(taint));\
instrumentation_end(); \
} while (0)
#define WARN_ON_ONCE(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN_FLAGS("["#condition"] ", \
BUGFLAG_ONCE | \
BUGFLAG_TAINT(TAINT_WARN)); \
unlikely(__ret_warn_on); \
#ifndef WARN_ON
#define WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN_FLAGS("["#condition"] ", \
BUGFLAG_TAINT(TAINT_WARN)); \
unlikely(__ret_warn_on); \
})
#endif
#ifndef WARN_ON_ONCE
#define WARN_ON_ONCE(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN_FLAGS("["#condition"] ", \
BUGFLAG_ONCE | \
BUGFLAG_TAINT(TAINT_WARN)); \
unlikely(__ret_warn_on); \
})
#endif
#endif /* __WARN_FLAGS */
/* used internally by panic.c */
#ifndef WARN_ON