Add function attributes that allow detecting use after free, and calling free on bad pointer at compile time.
Signed-off-by: Stephen Hemminger <step...@networkplumber.org> --- lib/gpudev/rte_gpudev.h | 46 +++++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 22 deletions(-) diff --git a/lib/gpudev/rte_gpudev.h b/lib/gpudev/rte_gpudev.h index 0a94a6abc4..7a35cf85d1 100644 --- a/lib/gpudev/rte_gpudev.h +++ b/lib/gpudev/rte_gpudev.h @@ -357,6 +357,28 @@ int rte_gpu_callback_unregister(int16_t dev_id, enum rte_gpu_event event, __rte_experimental int rte_gpu_info_get(int16_t dev_id, struct rte_gpu_info *info); + +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice. + * + * Deallocate a chunk of memory allocated with rte_gpu_mem_alloc(). + * + * @param dev_id + * Reference device ID. + * @param ptr + * Pointer to the memory area to be deallocated. + * NULL is a no-op accepted value. + * + * @return + * 0 on success, -rte_errno otherwise: + * - ENODEV if invalid dev_id + * - ENOTSUP if operation not supported by the driver + * - EPERM if driver error + */ +__rte_experimental +int rte_gpu_mem_free(int16_t dev_id, void *ptr); + /** * @warning * @b EXPERIMENTAL: this API may change without prior notice. @@ -385,28 +407,8 @@ int rte_gpu_info_get(int16_t dev_id, struct rte_gpu_info *info); */ __rte_experimental void *rte_gpu_mem_alloc(int16_t dev_id, size_t size, unsigned int align) -__rte_alloc_size(2); - -/** - * @warning - * @b EXPERIMENTAL: this API may change without prior notice. - * - * Deallocate a chunk of memory allocated with rte_gpu_mem_alloc(). - * - * @param dev_id - * Reference device ID. - * @param ptr - * Pointer to the memory area to be deallocated. - * NULL is a no-op accepted value. - * - * @return - * 0 on success, -rte_errno otherwise: - * - ENODEV if invalid dev_id - * - ENOTSUP if operation not supported by the driver - * - EPERM if driver error - */ -__rte_experimental -int rte_gpu_mem_free(int16_t dev_id, void *ptr); + __rte_alloc_size(2) __rte_alloc_align(3) + __rte_malloc __rte_dealloc(rte_gpu_mem_free, 2); /** * @warning -- 2.45.2
