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| author | Jiri Kosina <jkosina@suse.cz> | 2021-02-23 11:33:13 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2021-02-23 11:33:13 +0100 |
| commit | d6310078d9f8c416e85f641a631aecf58f9c97ff (patch) | |
| tree | 58ed5d9818ada3e970d93438083731abd6293ba9 /include/linux/mmdebug.h | |
| parent | f8dd50e097b221e35c34b844826db92158ec18c2 (diff) | |
| parent | df7b622906f24be954beca94e60c195fde65c6d5 (diff) | |
Merge branch 'for-5.12/google' into for-linus
- User experience improvements for hid-google from Nicolas Boichat
Diffstat (limited to 'include/linux/mmdebug.h')
| -rw-r--r-- | include/linux/mmdebug.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h index 2ad72d2c8cc5..5d0767cb424a 100644 --- a/include/linux/mmdebug.h +++ b/include/linux/mmdebug.h @@ -37,6 +37,18 @@ void dump_mm(const struct mm_struct *mm); BUG(); \ } \ } while (0) +#define VM_WARN_ON_ONCE_PAGE(cond, page) ({ \ + static bool __section(".data.once") __warned; \ + int __ret_warn_once = !!(cond); \ + \ + if (unlikely(__ret_warn_once && !__warned)) { \ + dump_page(page, "VM_WARN_ON_ONCE_PAGE(" __stringify(cond)")");\ + __warned = true; \ + WARN_ON(1); \ + } \ + unlikely(__ret_warn_once); \ +}) + #define VM_WARN_ON(cond) (void)WARN_ON(cond) #define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond) #define VM_WARN_ONCE(cond, format...) (void)WARN_ONCE(cond, format) @@ -48,6 +60,7 @@ void dump_mm(const struct mm_struct *mm); #define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond) #define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond) #define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond) +#define VM_WARN_ON_ONCE_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond) #define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond) #define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond) #endif |