qcacmn: Add debug version of qdf_mem_multi_pages_alloc/free
Under memory debug, qdf_mem_multi_pages_alloc function is getting reported as the culprit of memory leaks when there is no associated qdf_mem_multi_pages_free call. qdf_mem_multi_pages_alloc is just an allocator function which uses qdf_mem_malloc internally to serve the requested allocation and is not the actual source of the leak. As there are multiple users of qdf_mem_multi_pages_alloc in the code base, add memory debug versions of qdf_mem_multi_pages_alloc/free to track the actual users of the allocations. Change-Id: I8b2159de842a3c5d7f9cdb244ca148cf6df37d0d CRs-Fixed: 2474749
This commit is contained in:
Shiva Krishna Pittala
@@ -128,6 +128,28 @@ void qdf_mem_free_debug(void *ptr, const char *file, uint32_t line);
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#define qdf_mem_free(ptr) \
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qdf_mem_free_debug(ptr, __func__, __LINE__)
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void qdf_mem_multi_pages_alloc_debug(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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size_t element_size, uint16_t element_num,
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qdf_dma_context_t memctxt, bool cacheable,
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const char *func, uint32_t line,
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void *caller);
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#define qdf_mem_multi_pages_alloc(osdev, pages, element_size, element_num,\
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memctxt, cacheable) \
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qdf_mem_multi_pages_alloc_debug(osdev, pages, element_size, \
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element_num, memctxt, cacheable, \
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__func__, __LINE__, QDF_RET_IP)
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void qdf_mem_multi_pages_free_debug(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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qdf_dma_context_t memctxt, bool cacheable,
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const char *func, uint32_t line);
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#define qdf_mem_multi_pages_free(osdev, pages, memctxt, cacheable) \
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qdf_mem_multi_pages_free_debug(osdev, pages, memctxt, cacheable, \
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__func__, __LINE__)
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/**
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* qdf_mem_check_for_leaks() - Assert that the current memory domain is empty
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*
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@@ -257,6 +279,15 @@ void qdf_mem_free_consistent(qdf_device_t osdev, void *dev,
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qdf_size_t size, void *vaddr,
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qdf_dma_addr_t paddr, qdf_dma_context_t memctx);
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void qdf_mem_multi_pages_alloc(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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size_t element_size, uint16_t element_num,
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qdf_dma_context_t memctxt, bool cacheable);
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void qdf_mem_multi_pages_free(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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qdf_dma_context_t memctxt, bool cacheable);
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#endif /* MEMORY_DEBUG */
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/**
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@@ -504,13 +535,6 @@ void qdf_mem_dma_sync_single_for_cpu(qdf_device_t osdev,
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qdf_size_t size,
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__dma_data_direction direction);
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void qdf_mem_multi_pages_alloc(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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size_t element_size, uint16_t element_num,
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qdf_dma_context_t memctxt, bool cacheable);
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void qdf_mem_multi_pages_free(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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qdf_dma_context_t memctxt, bool cacheable);
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int qdf_mem_multi_page_link(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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uint32_t elem_size, uint32_t elem_count, uint8_t cacheable);
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@@ -1067,6 +1067,163 @@ void qdf_mem_check_for_leaks(void)
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panic("%u fatal memory leaks detected!", leaks_count);
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}
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/**
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* qdf_mem_multi_pages_alloc_debug() - Debug version of
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* qdf_mem_multi_pages_alloc
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* @osdev: OS device handle pointer
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* @pages: Multi page information storage
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* @element_size: Each element size
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* @element_num: Total number of elements should be allocated
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* @memctxt: Memory context
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* @cacheable: Coherent memory or cacheable memory
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* @func: Caller of this allocator
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* @line: Line number of the caller
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* @caller: Return address of the caller
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*
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* This function will allocate large size of memory over multiple pages.
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* Large size of contiguous memory allocation will fail frequently, then
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* instead of allocate large memory by one shot, allocate through multiple, non
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* contiguous memory and combine pages when actual usage
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*
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* Return: None
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*/
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void qdf_mem_multi_pages_alloc_debug(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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size_t element_size, uint16_t element_num,
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qdf_dma_context_t memctxt, bool cacheable,
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const char *func, uint32_t line,
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void *caller)
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{
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uint16_t page_idx;
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struct qdf_mem_dma_page_t *dma_pages;
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void **cacheable_pages = NULL;
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uint16_t i;
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pages->num_element_per_page = PAGE_SIZE / element_size;
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if (!pages->num_element_per_page) {
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qdf_print("Invalid page %d or element size %d",
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(int)PAGE_SIZE, (int)element_size);
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goto out_fail;
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}
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pages->num_pages = element_num / pages->num_element_per_page;
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if (element_num % pages->num_element_per_page)
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pages->num_pages++;
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if (cacheable) {
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/* Pages information storage */
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pages->cacheable_pages = qdf_mem_malloc_debug(
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pages->num_pages * sizeof(pages->cacheable_pages),
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func, line, caller, 0);
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if (!pages->cacheable_pages)
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goto out_fail;
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cacheable_pages = pages->cacheable_pages;
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for (page_idx = 0; page_idx < pages->num_pages; page_idx++) {
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cacheable_pages[page_idx] = qdf_mem_malloc_debug(
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PAGE_SIZE, func, line, caller, 0);
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if (!cacheable_pages[page_idx])
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goto page_alloc_fail;
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}
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pages->dma_pages = NULL;
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} else {
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pages->dma_pages = qdf_mem_malloc_debug(
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pages->num_pages * sizeof(struct qdf_mem_dma_page_t),
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func, line, caller, 0);
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if (!pages->dma_pages)
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goto out_fail;
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dma_pages = pages->dma_pages;
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for (page_idx = 0; page_idx < pages->num_pages; page_idx++) {
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dma_pages->page_v_addr_start =
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qdf_mem_alloc_consistent_debug(
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osdev, osdev->dev, PAGE_SIZE,
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&dma_pages->page_p_addr,
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func, line, caller);
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if (!dma_pages->page_v_addr_start) {
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qdf_print("dmaable page alloc fail pi %d",
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page_idx);
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goto page_alloc_fail;
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}
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dma_pages->page_v_addr_end =
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dma_pages->page_v_addr_start + PAGE_SIZE;
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dma_pages++;
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}
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pages->cacheable_pages = NULL;
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}
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return;
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page_alloc_fail:
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if (cacheable) {
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for (i = 0; i < page_idx; i++)
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qdf_mem_free_debug(pages->cacheable_pages[i],
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func, line);
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qdf_mem_free_debug(pages->cacheable_pages, func, line);
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} else {
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dma_pages = pages->dma_pages;
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for (i = 0; i < page_idx; i++) {
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qdf_mem_free_consistent_debug(
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osdev, osdev->dev,
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PAGE_SIZE, dma_pages->page_v_addr_start,
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dma_pages->page_p_addr, memctxt, func, line);
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dma_pages++;
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}
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qdf_mem_free_debug(pages->dma_pages, func, line);
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}
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out_fail:
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pages->cacheable_pages = NULL;
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pages->dma_pages = NULL;
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pages->num_pages = 0;
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}
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qdf_export_symbol(qdf_mem_multi_pages_alloc_debug);
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/**
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* qdf_mem_multi_pages_free_debug() - Debug version of qdf_mem_multi_pages_free
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* @osdev: OS device handle pointer
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* @pages: Multi page information storage
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* @memctxt: Memory context
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* @cacheable: Coherent memory or cacheable memory
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* @func: Caller of this allocator
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* @line: Line number of the caller
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*
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* This function will free large size of memory over multiple pages.
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*
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* Return: None
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*/
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void qdf_mem_multi_pages_free_debug(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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qdf_dma_context_t memctxt, bool cacheable,
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const char *func, uint32_t line)
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{
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unsigned int page_idx;
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struct qdf_mem_dma_page_t *dma_pages;
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if (cacheable) {
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for (page_idx = 0; page_idx < pages->num_pages; page_idx++)
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qdf_mem_free_debug(pages->cacheable_pages[page_idx],
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func, line);
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qdf_mem_free_debug(pages->cacheable_pages, func, line);
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} else {
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dma_pages = pages->dma_pages;
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for (page_idx = 0; page_idx < pages->num_pages; page_idx++) {
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qdf_mem_free_consistent_debug(
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osdev, osdev->dev, PAGE_SIZE,
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dma_pages->page_v_addr_start,
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dma_pages->page_p_addr, memctxt, func, line);
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dma_pages++;
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}
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qdf_mem_free_debug(pages->dma_pages, func, line);
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}
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pages->cacheable_pages = NULL;
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pages->dma_pages = NULL;
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pages->num_pages = 0;
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}
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qdf_export_symbol(qdf_mem_multi_pages_free_debug);
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#else
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static void qdf_mem_debug_init(void) {}
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@@ -1136,37 +1293,6 @@ void qdf_mem_free(void *ptr)
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}
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qdf_export_symbol(qdf_mem_free);
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#endif
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void *qdf_aligned_malloc_fl(qdf_size_t size, uint32_t ring_base_align,
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void **vaddr_unaligned,
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const char *func, uint32_t line)
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{
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void *vaddr_aligned;
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*vaddr_unaligned = qdf_mem_malloc_fl(size, func, line);
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if (!*vaddr_unaligned) {
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qdf_warn("Failed to alloc %zuB @ %s:%d", size, func, line);
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return NULL;
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}
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if ((unsigned long)(*vaddr_unaligned) % ring_base_align) {
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qdf_mem_free(*vaddr_unaligned);
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*vaddr_unaligned = qdf_mem_malloc_fl(size + ring_base_align - 1,
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func, line);
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if (!*vaddr_unaligned) {
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qdf_warn("Failed to alloc %zuB @ %s:%d",
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size, func, line);
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return NULL;
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}
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}
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vaddr_aligned = (*vaddr_unaligned) +
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((unsigned long)(*vaddr_unaligned) % ring_base_align);
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return vaddr_aligned;
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}
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qdf_export_symbol(qdf_aligned_malloc_fl);
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/**
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* qdf_mem_multi_pages_alloc() - allocate large size of kernel memory
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@@ -1307,6 +1433,38 @@ void qdf_mem_multi_pages_free(qdf_device_t osdev,
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return;
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}
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qdf_export_symbol(qdf_mem_multi_pages_free);
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#endif
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void *qdf_aligned_malloc_fl(qdf_size_t size, uint32_t ring_base_align,
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void **vaddr_unaligned,
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const char *func, uint32_t line)
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{
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void *vaddr_aligned;
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*vaddr_unaligned = qdf_mem_malloc_fl(size, func, line);
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if (!*vaddr_unaligned) {
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qdf_warn("Failed to alloc %zuB @ %s:%d", size, func, line);
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return NULL;
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}
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if ((unsigned long)(*vaddr_unaligned) % ring_base_align) {
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qdf_mem_free(*vaddr_unaligned);
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*vaddr_unaligned = qdf_mem_malloc_fl(size + ring_base_align - 1,
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func, line);
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if (!*vaddr_unaligned) {
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qdf_warn("Failed to alloc %zuB @ %s:%d",
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size, func, line);
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return NULL;
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}
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}
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vaddr_aligned = (*vaddr_unaligned) +
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((unsigned long)(*vaddr_unaligned) % ring_base_align);
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return vaddr_aligned;
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}
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qdf_export_symbol(qdf_aligned_malloc_fl);
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/**
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* qdf_mem_multi_page_link() - Make links for multi page elements
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