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bugs/core: Pass down the condition string of WARN_ON_ONCE(cond) warnings to __WARN_FLAGS() 

Doing this will allow architecture code to store and print out
this information as part of the WARN_ON and BUG_ON facilities.

The format of the string is '[condition]', for example:

  WARN_ON_ONCE(idx < 0 && ptr);

Will get the '[idx < 0 && ptr]' string literal passed down as 'cond_str'
in __WARN_FLAGS().

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-arch@vger.kernel.org
Link: https://lore.kernel.org/r/20250515124644.2958810-3-mingo@kernel.org
This commit is contained in:
Ingo Molnar 2025-05-15 14:46:31 +02:00
parent aec58b4851
commit 3bc3c9c3ab
1 changed files with 1 additions and 1 deletions
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2
include/asm-generic/bug.h
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@ -110,7 +110,7 @@ extern __printf(1, 2) void __warn_printk(const char *fmt, ...);
#define WARN_ON_ONCE(condition) ({ \ #define WARN_ON_ONCE(condition) ({ \
int __ret_warn_on = !!(condition); \ int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \ if (unlikely(__ret_warn_on)) \
__WARN_FLAGS("", \ __WARN_FLAGS("["#condition"] ", \
BUGFLAG_ONCE | \ BUGFLAG_ONCE | \
BUGFLAG_TAINT(TAINT_WARN)); \ BUGFLAG_TAINT(TAINT_WARN)); \
unlikely(__ret_warn_on); \ unlikely(__ret_warn_on); \