bugs/x86: Augment warnings output by concatenating 'cond_str' with the regular __FILE__ string in _BUG_FLAGS()

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This allows the reuse of the UD2 based 'struct bug_entry' low-overhead
_BUG_FLAGS() implementation and string-printing backend, without
having to add a new field.

An example:

If we have the following WARN_ON_ONCE() in kernel/sched/core.c:

	WARN_ON_ONCE(idx < 0 && ptr);

Then previously _BUG_FLAGS() would store this string in bug_entry::file:

	"kernel/sched/core.c"

After this patch, it would store and print:

	"[idx < 0 && ptr] kernel/sched/core.c"

Which is an extended string that will be printed in warnings.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arch@vger.kernel.org
Link: https://lore.kernel.org/r/20250515124644.2958810-6-mingo@kernel.org

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This commit is contained in:

Ingo Molnar 2025-05-15 14:46:34 +02:00

parent 407b9076c1

commit 48ede5be5c

1 changed files with 1 additions and 1 deletions

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arch/x86/include/asm/bug.h

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