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qcacmn: Add QDF debug capability to track total SKB allocation

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Enhance existing SKB leak debug capability to track total
SKB allocation by driver in SLUB debug enabled builds.

Change-Id: I6bb19ab482961febd8bb5adebe8f71e732ff60dd
CRs-Fixed: 2066205
This commit is contained in:
Rajeev Kumar
2017-06-23 11:02:28 -07:00
committed by snandini
parent 7dacc4efe3
commit bc19894820
3 changed files with 34 additions and 0 deletions
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15
qdf/inc/qdf_mem.h
View File

@@ -302,5 +302,20 @@ void qdf_mem_multi_pages_free(qdf_device_t osdev,
int qdf_mem_multi_page_link(qdf_device_t osdev, int qdf_mem_multi_page_link(qdf_device_t osdev,
struct qdf_mem_multi_page_t *pages, struct qdf_mem_multi_page_t *pages,
uint32_t elem_size, uint32_t elem_count, uint8_t cacheable); uint32_t elem_size, uint32_t elem_count, uint8_t cacheable);
/**
* qdf_mem_skb_inc() - increment total skb allocation size
* @size: size to be added
*
* Return: none
*/
void qdf_mem_skb_inc(qdf_size_t size);
/**
* qdf_mem_skb_dec() - decrement total skb allocation size
* @size: size to be decremented
*
* Return: none
*/
void qdf_mem_skb_dec(qdf_size_t size);
#endif /* __QDF_MEMORY_H */ #endif /* __QDF_MEMORY_H */

17
qdf/linux/src/qdf_mem.c
View File

@@ -107,10 +107,12 @@ static struct dentry *qdf_mem_debugfs_root;
* struct __qdf_mem_stat - qdf memory statistics * struct __qdf_mem_stat - qdf memory statistics
* @kmalloc: total kmalloc allocations * @kmalloc: total kmalloc allocations
* @dma: total dma allocations * @dma: total dma allocations
* @skb: total skb allocations
*/ */
static struct __qdf_mem_stat { static struct __qdf_mem_stat {
qdf_atomic_t kmalloc; qdf_atomic_t kmalloc;
qdf_atomic_t dma; qdf_atomic_t dma;
qdf_atomic_t skb;
} qdf_mem_stat; } qdf_mem_stat;
static inline void qdf_mem_kmalloc_inc(qdf_size_t size) static inline void qdf_mem_kmalloc_inc(qdf_size_t size)
@@ -123,6 +125,11 @@ static inline void qdf_mem_dma_inc(qdf_size_t size)
qdf_atomic_add(size, &qdf_mem_stat.dma); qdf_atomic_add(size, &qdf_mem_stat.dma);
} }
void qdf_mem_skb_inc(qdf_size_t size)
{
qdf_atomic_add(size, &qdf_mem_stat.skb);
}
static inline void qdf_mem_kmalloc_dec(qdf_size_t size) static inline void qdf_mem_kmalloc_dec(qdf_size_t size)
{ {
qdf_atomic_sub(size, &qdf_mem_stat.kmalloc); qdf_atomic_sub(size, &qdf_mem_stat.kmalloc);
@@ -133,6 +140,11 @@ static inline void qdf_mem_dma_dec(qdf_size_t size)
qdf_atomic_sub(size, &qdf_mem_stat.dma); qdf_atomic_sub(size, &qdf_mem_stat.dma);
} }
void qdf_mem_skb_dec(qdf_size_t size)
{
qdf_atomic_sub(size, &qdf_mem_stat.skb);
}
#ifdef MEMORY_DEBUG #ifdef MEMORY_DEBUG
/** /**
* struct __qdf_mem_info - memory statistics * struct __qdf_mem_info - memory statistics
@@ -493,6 +505,11 @@ static QDF_STATUS qdf_mem_debugfs_init(void)
qdf_mem_debugfs_root, qdf_mem_debugfs_root,
&qdf_mem_stat.dma); &qdf_mem_stat.dma);
debugfs_create_atomic_t("skb",
S_IRUSR,
qdf_mem_debugfs_root,
&qdf_mem_stat.skb);
return QDF_STATUS_SUCCESS; return QDF_STATUS_SUCCESS;
} }

2
qdf/linux/src/qdf_nbuf.c
View File

@@ -1539,6 +1539,7 @@ void qdf_net_buf_debug_add_node(qdf_nbuf_t net_buf, size_t size,
p_node->file_name = file_name; p_node->file_name = file_name;
p_node->line_num = line_num; p_node->line_num = line_num;
p_node->size = size; p_node->size = size;
qdf_mem_skb_inc(size);
p_node->p_next = gp_qdf_net_buf_track_tbl[i]; p_node->p_next = gp_qdf_net_buf_track_tbl[i];
gp_qdf_net_buf_track_tbl[i] = p_node; gp_qdf_net_buf_track_tbl[i] = p_node;
} else } else
@@ -1601,6 +1602,7 @@ done:
net_buf); net_buf);
QDF_ASSERT(0); QDF_ASSERT(0);
} else { } else {
qdf_mem_skb_dec(p_node->size);
qdf_nbuf_track_free(p_node); qdf_nbuf_track_free(p_node);
} }
} }