diff options
Diffstat (limited to 'include/linux/alloc_tag.h')
-rw-r--r-- | include/linux/alloc_tag.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/alloc_tag.h b/include/linux/alloc_tag.h index d18388c0e9e1..3af5d6a5ced4 100644 --- a/include/linux/alloc_tag.h +++ b/include/linux/alloc_tag.h @@ -29,6 +29,27 @@ struct alloc_tag { struct alloc_tag_counters __percpu *counters; } __aligned(8); +#ifdef CONFIG_MEM_ALLOC_PROFILING_DEBUG + +#define CODETAG_EMPTY ((void *)1) + +static inline bool is_codetag_empty(union codetag_ref *ref) +{ + return ref->ct == CODETAG_EMPTY; +} + +static inline void set_codetag_empty(union codetag_ref *ref) +{ + if (ref) + ref->ct = CODETAG_EMPTY; +} + +#else /* CONFIG_MEM_ALLOC_PROFILING_DEBUG */ + +static inline bool is_codetag_empty(union codetag_ref *ref) { return false; } + +#endif /* CONFIG_MEM_ALLOC_PROFILING_DEBUG */ + #ifdef CONFIG_MEM_ALLOC_PROFILING struct codetag_bytes { @@ -151,6 +172,11 @@ static inline void alloc_tag_sub(union codetag_ref *ref, size_t bytes) if (!ref || !ref->ct) return; + if (is_codetag_empty(ref)) { + ref->ct = NULL; + return; + } + tag = ct_to_alloc_tag(ref->ct); this_cpu_sub(tag->counters->bytes, bytes); |