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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2024-01-03 11:19:48 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2024-01-11 16:16:58 +0100 |
| commit | 3b437626ed4777d8ef6de28bf282bbbb36bee69f (patch) | |
| tree | e9068f3492e51947ec2039ce103f630da2bf5da0 /include/linux | |
| parent | 89f1040d09f2fb4da2a2e056e320662a5b87671d (diff) | |
| download | barebox-3b437626ed4777d8ef6de28bf282bbbb36bee69f.tar.gz barebox-3b437626ed4777d8ef6de28bf282bbbb36bee69f.tar.xz | |
lib: add optional linked list debugging
When enabled, this outputs messages like:
list_del corruption, 000000005fe4a9d0->next is LIST_POISON1 (0000000000000100)
which can be useful when debugging.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240103101948.2630473-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bug.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/bug.h b/include/linux/bug.h index d8fc328a07..8ea5f8d1b2 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -6,4 +6,21 @@ #include <asm-generic/bug.h> #include <linux/build_bug.h> +/* + * Since detected data corruption should stop operation on the affected + * structures. Return value must be checked and sanely acted on by caller. + */ +static inline __must_check bool check_data_corruption(bool v) { return v; } +#define CHECK_DATA_CORRUPTION(condition, fmt, ...) \ + check_data_corruption(({ \ + bool corruption = unlikely(condition); \ + if (corruption) { \ + if (IS_ENABLED(CONFIG_BUG_ON_DATA_CORRUPTION)) { \ + panic(fmt, ##__VA_ARGS__); \ + } else \ + WARN(1, fmt, ##__VA_ARGS__); \ + } \ + corruption; \ + })) + #endif /* _LINUX_BUG_H */ |