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maple_tree: add debug BUG_ON and WARN_ON variants

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Add debug macros to dump the maple state and/or the tree for both warning
and bug_on calls.

Link: https://lkml.kernel.org/r/20230518145544.1722059-7-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: David Binderman <dcb314@hotmail.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Liam R. Howlett
2023-05-18 10:55:15 -04:00
committed by Andrew Morton
parent 89f499f35c
commit f0a1f866ab
2 changed files with 129 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

100
include/linux/maple_tree.h
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@@ -482,13 +482,13 @@ static inline void mas_init(struct ma_state *mas, struct maple_tree *tree,
}
/* Checks if a mas has not found anything */
static inline bool mas_is_none(struct ma_state *mas)
static inline bool mas_is_none(const struct ma_state *mas)
{
return mas->node == MAS_NONE;
}
/* Checks if a mas has been paused */
static inline bool mas_is_paused(struct ma_state *mas)
static inline bool mas_is_paused(const struct ma_state *mas)
{
return mas->node == MAS_PAUSE;
}
@@ -679,6 +679,8 @@ extern atomic_t maple_tree_tests_run;
extern atomic_t maple_tree_tests_passed;
void mt_dump(const struct maple_tree *mt, enum mt_dump_format format);
void mas_dump(const struct ma_state *mas);
void mas_wr_dump(const struct ma_wr_state *wr_mas);
void mt_validate(struct maple_tree *mt);
void mt_cache_shrink(void);
#define MT_BUG_ON(__tree, __x) do { \
@@ -695,8 +697,100 @@ void mt_cache_shrink(void);
atomic_inc(&maple_tree_tests_passed); \
} \
} while (0)
#define MAS_BUG_ON(__mas, __x) do { \
atomic_inc(&maple_tree_tests_run); \
if (__x) { \
pr_info("BUG at %s:%d (%u)\n", \
__func__, __LINE__, __x); \
mas_dump(__mas); \
mt_dump((__mas)->tree, mt_dump_hex); \
pr_info("Pass: %u Run:%u\n", \
atomic_read(&maple_tree_tests_passed), \
atomic_read(&maple_tree_tests_run)); \
dump_stack(); \
} else { \
atomic_inc(&maple_tree_tests_passed); \
} \
} while (0)
#define MAS_WR_BUG_ON(__wrmas, __x) do { \
atomic_inc(&maple_tree_tests_run); \
if (__x) { \
pr_info("BUG at %s:%d (%u)\n", \
__func__, __LINE__, __x); \
mas_wr_dump(__wrmas); \
mas_dump((__wrmas)->mas); \
mt_dump((__wrmas)->mas->tree, mt_dump_hex); \
pr_info("Pass: %u Run:%u\n", \
atomic_read(&maple_tree_tests_passed), \
atomic_read(&maple_tree_tests_run)); \
dump_stack(); \
} else { \
atomic_inc(&maple_tree_tests_passed); \
} \
} while (0)
#define MT_WARN_ON(__tree, __x) ({ \
int ret = !!(__x); \
atomic_inc(&maple_tree_tests_run); \
if (ret) { \
pr_info("WARN at %s:%d (%u)\n", \
__func__, __LINE__, __x); \
mt_dump(__tree, mt_dump_hex); \
pr_info("Pass: %u Run:%u\n", \
atomic_read(&maple_tree_tests_passed), \
atomic_read(&maple_tree_tests_run)); \
dump_stack(); \
} else { \
atomic_inc(&maple_tree_tests_passed); \
} \
unlikely(ret); \
})
#define MAS_WARN_ON(__mas, __x) ({ \
int ret = !!(__x); \
atomic_inc(&maple_tree_tests_run); \
if (ret) { \
pr_info("WARN at %s:%d (%u)\n", \
__func__, __LINE__, __x); \
mas_dump(__mas); \
mt_dump((__mas)->tree, mt_dump_hex); \
pr_info("Pass: %u Run:%u\n", \
atomic_read(&maple_tree_tests_passed), \
atomic_read(&maple_tree_tests_run)); \
dump_stack(); \
} else { \
atomic_inc(&maple_tree_tests_passed); \
} \
unlikely(ret); \
})
#define MAS_WR_WARN_ON(__wrmas, __x) ({ \
int ret = !!(__x); \
atomic_inc(&maple_tree_tests_run); \
if (ret) { \
pr_info("WARN at %s:%d (%u)\n", \
__func__, __LINE__, __x); \
mas_wr_dump(__wrmas); \
mas_dump((__wrmas)->mas); \
mt_dump((__wrmas)->mas->tree, mt_dump_hex); \
pr_info("Pass: %u Run:%u\n", \
atomic_read(&maple_tree_tests_passed), \
atomic_read(&maple_tree_tests_run)); \
dump_stack(); \
} else { \
atomic_inc(&maple_tree_tests_passed); \
} \
unlikely(ret); \
})
#else
#define MT_BUG_ON(__tree, __x) BUG_ON(__x)
#define MT_BUG_ON(__tree, __x) BUG_ON(__x)
#define MAS_BUG_ON(__mas, __x) BUG_ON(__x)
#define MAS_WR_BUG_ON(__mas, __x) BUG_ON(__x)
#define MT_WARN_ON(__tree, __x) WARN_ON(__x)
#define MAS_WARN_ON(__mas, __x) WARN_ON(__x)
#define MAS_WR_WARN_ON(__mas, __x) WARN_ON(__x)
#endif /* CONFIG_DEBUG_MAPLE_TREE */
#endif /*_LINUX_MAPLE_TREE_H */