qcacmn: Log memory stats in host driver

Add logs in driver to log current memory footprint
in init functions. Add wlan_mem_stats to sysfs node
in both perf and defconfig builds.
The stats are included under MCL feature
DCONFIG_WLAN_SYSFS_MEM_STATS.

Change-Id: I79c6d418a5762cddf52ab3bc0b0c93993fa7fd84
CRs-Fixed: 2635192

dp/wifi3.0/dp_main.c

@@ -10684,6 +10684,11 @@ dp_soc_attach(struct cdp_ctrl_objmgr_psoc *ctrl_psoc,
 	dp_soc_set_interrupt_mode(soc);
 	dp_soc_set_def_pdev(soc);
 
+	dp_info("Mem stats: DMA = %u HEAP = %u SKB = %u",
+		qdf_dma_mem_stats_read(),
+		qdf_heap_mem_stats_read(),
+		qdf_skb_mem_stats_read());
+
 	return soc;
 fail5:
 	dp_soc_srng_free(soc);
@@ -10876,6 +10881,11 @@ void *dp_soc_init(struct dp_soc *soc, HTC_HANDLE htc_handle,
 	/* initialize work queue for stats processing */
 	qdf_create_work(0, &soc->htt_stats.work, htt_t2h_stats_handler, soc);
 
+	dp_info("Mem stats: DMA = %u HEAP = %u SKB = %u",
+		qdf_dma_mem_stats_read(),
+		qdf_heap_mem_stats_read(),
+		qdf_skb_mem_stats_read());
+
 	return soc;
 fail6:
 	htt_soc_htc_dealloc(soc->htt_handle);
@@ -12429,6 +12439,11 @@ static inline QDF_STATUS dp_pdev_init(struct cdp_soc_t *txrx_soc,
 	dp_init_tso_stats(pdev);
 	dp_tx_ppdu_stats_attach(pdev);
 
+	dp_info("Mem stats: DMA = %u HEAP = %u SKB = %u",
+		qdf_dma_mem_stats_read(),
+		qdf_heap_mem_stats_read(),
+		qdf_skb_mem_stats_read());
+
 	return QDF_STATUS_SUCCESS;
 fail9:
 	dp_ipa_uc_detach(soc, pdev);

qdf/inc/qdf_mem.h

@@ -555,8 +555,6 @@ int qdf_mem_multi_page_link(qdf_device_t osdev,
 		struct qdf_mem_multi_page_t *pages,
 		uint32_t elem_size, uint32_t elem_count, uint8_t cacheable);
 
-#ifdef WLAN_DEBUGFS
-
 /**
  * qdf_mem_kmalloc_inc() - increment kmalloc allocated bytes count
  * @size: number of bytes to increment by
@@ -573,13 +571,7 @@ void qdf_mem_kmalloc_inc(qdf_size_t size);
  */
 void qdf_mem_kmalloc_dec(qdf_size_t size);
 
-#else
+#ifdef CONFIG_WLAN_SYSFS_MEM_STATS
-
-static inline void qdf_mem_kmalloc_inc(qdf_size_t size) { }
-static inline void qdf_mem_kmalloc_dec(qdf_size_t size) { }
-
-#endif /* WLAN_DEBUGFS */
-
 /**
  * qdf_mem_skb_inc() - increment total skb allocation size
  * @size: size to be added
@@ -596,6 +588,16 @@ void qdf_mem_skb_inc(qdf_size_t size);
  */
 void qdf_mem_skb_dec(qdf_size_t size);
 
+#else
+static inline void qdf_mem_skb_inc(qdf_size_t size)
+{
+}
+
+static inline void qdf_mem_skb_dec(qdf_size_t size)
+{
+}
+#endif /* CONFIG_WLAN_SYSFS_MEM_STATS */
+
 /**
  * qdf_mem_map_table_alloc() - Allocate shared memory info structure
  * @num: number of required storage
@@ -846,4 +848,28 @@ static inline void qdf_mem_shared_mem_free(qdf_device_t osdev,
 	qdf_mem_free(shared_mem);
 }
 
+/**
+ * qdf_dma_mem_stats_read() - Return the DMA memory allocated in
+ * host driver
+ *
+ * Return: None
+ */
+int32_t qdf_dma_mem_stats_read(void);
+
+/**
+ * qdf_heap_mem_stats_read() - Return the heap memory allocated
+ * in host driver
+ *
+ * Return: None
+ */
+int32_t qdf_heap_mem_stats_read(void);
+
+/**
+ * qdf_skb_mem_stats_read() - Return the SKB memory allocated in
+ * host driver
+ *
+ * Return: None
+ */
+int32_t qdf_skb_mem_stats_read(void);
+
 #endif /* __QDF_MEMORY_H */

qdf/inc/qdf_nbuf.h

@@ -1620,7 +1620,12 @@ static inline qdf_nbuf_t
 qdf_nbuf_alloc_fl(qdf_device_t osdev, qdf_size_t size, int reserve, int align,
 		  int prio, const char *func, uint32_t line)
 {
-	return __qdf_nbuf_alloc(osdev, size, reserve, align, prio, func, line);
+	qdf_nbuf_t nbuf;
+
+	nbuf = __qdf_nbuf_alloc(osdev, size, reserve, align, prio, func, line);
+	if (qdf_likely(nbuf))
+		qdf_mem_skb_inc(nbuf->truesize);
+	return nbuf;
 }
 
 static inline void qdf_nbuf_free(qdf_nbuf_t buf)

qdf/linux/src/qdf_mem.c

@@ -59,6 +59,18 @@ static bool is_initial_mem_debug_disabled;
 #define QDF_MEM_WARN_THRESHOLD 300 /* ms */
 #define QDF_DEBUG_STRING_SIZE 512
 
+/**
+ * struct __qdf_mem_stat - qdf memory statistics
+ * @kmalloc: total kmalloc allocations
+ * @dma: total dma allocations
+ * @skb: total skb allocations
+ */
+static struct __qdf_mem_stat {
+	qdf_atomic_t kmalloc;
+	qdf_atomic_t dma;
+	qdf_atomic_t skb;
+} qdf_mem_stat;
+
 #ifdef MEMORY_DEBUG
 #include "qdf_debug_domain.h"
 
@@ -292,54 +304,11 @@ u_int8_t prealloc_disabled = 1;
 qdf_declare_param(prealloc_disabled, byte);
 qdf_export_symbol(prealloc_disabled);
 
-/**
- * struct __qdf_mem_stat - qdf memory statistics
- * @kmalloc:	total kmalloc allocations
- * @dma:	total dma allocations
- * @skb:	total skb allocations
- */
-static struct __qdf_mem_stat {
-	qdf_atomic_t kmalloc;
-	qdf_atomic_t dma;
-	qdf_atomic_t skb;
-} qdf_mem_stat;
-
-void qdf_mem_skb_inc(qdf_size_t size)
-{
-	qdf_atomic_add(size, &qdf_mem_stat.skb);
-}
-
-void qdf_mem_skb_dec(qdf_size_t size)
-{
-	qdf_atomic_sub(size, &qdf_mem_stat.skb);
-}
-
 #if defined WLAN_DEBUGFS
 
 /* Debugfs root directory for qdf_mem */
 static struct dentry *qdf_mem_debugfs_root;
 
-void qdf_mem_kmalloc_inc(qdf_size_t size)
-{
-	qdf_atomic_add(size, &qdf_mem_stat.kmalloc);
-}
-
-void qdf_mem_kmalloc_dec(qdf_size_t size)
-{
-	qdf_atomic_sub(size, &qdf_mem_stat.kmalloc);
-}
-
-static void qdf_mem_dma_inc(qdf_size_t size)
-{
-	qdf_atomic_add(size, &qdf_mem_stat.dma);
-}
-
-static inline void qdf_mem_dma_dec(qdf_size_t size)
-{
-	qdf_atomic_sub(size, &qdf_mem_stat.dma);
-}
-
-
 #ifdef MEMORY_DEBUG
 static int qdf_err_printer(void *priv, const char *fmt, ...)
 {
@@ -841,9 +810,6 @@ static QDF_STATUS qdf_mem_debugfs_init(void)
 
 #else /* WLAN_DEBUGFS */
 
-static inline void qdf_mem_dma_inc(qdf_size_t size) {}
-static inline void qdf_mem_dma_dec(qdf_size_t size) {}
-
 static QDF_STATUS qdf_mem_debugfs_init(void)
 {
 	return QDF_STATUS_E_NOSUPPORT;
@@ -863,6 +829,38 @@ static QDF_STATUS qdf_mem_debug_debugfs_exit(void)
 
 #endif /* WLAN_DEBUGFS */
 
+void qdf_mem_kmalloc_inc(qdf_size_t size)
+{
+	qdf_atomic_add(size, &qdf_mem_stat.kmalloc);
+}
+
+static void qdf_mem_dma_inc(qdf_size_t size)
+{
+	qdf_atomic_add(size, &qdf_mem_stat.dma);
+}
+
+#ifdef CONFIG_WLAN_SYSFS_MEM_STATS
+void qdf_mem_skb_inc(qdf_size_t size)
+{
+	qdf_atomic_add(size, &qdf_mem_stat.skb);
+}
+
+void qdf_mem_skb_dec(qdf_size_t size)
+{
+	qdf_atomic_sub(size, &qdf_mem_stat.skb);
+}
+#endif
+
+void qdf_mem_kmalloc_dec(qdf_size_t size)
+{
+	qdf_atomic_sub(size, &qdf_mem_stat.kmalloc);
+}
+
+static inline void qdf_mem_dma_dec(qdf_size_t size)
+{
+	qdf_atomic_sub(size, &qdf_mem_stat.dma);
+}
+
 /**
  * __qdf_mempool_init() - Create and initialize memory pool
  *
@@ -2302,3 +2300,24 @@ void qdf_ether_addr_copy(void *dst_addr, const void *src_addr)
 }
 qdf_export_symbol(qdf_ether_addr_copy);
 
+int32_t qdf_dma_mem_stats_read(void)
+{
+	return qdf_atomic_read(&qdf_mem_stat.dma);
+}
+
+qdf_export_symbol(qdf_dma_mem_stats_read);
+
+int32_t qdf_heap_mem_stats_read(void)
+{
+	return qdf_atomic_read(&qdf_mem_stat.kmalloc);
+}
+
+qdf_export_symbol(qdf_heap_mem_stats_read);
+
+int32_t qdf_skb_mem_stats_read(void)
+{
+	return qdf_atomic_read(&qdf_mem_stat.skb);
+}
+
+qdf_export_symbol(qdf_skb_mem_stats_read);
+

qdf/linux/src/qdf_nbuf.c

@@ -551,6 +551,7 @@ void __qdf_nbuf_free(struct sk_buff *skb)
 		return;
 
 	qdf_nbuf_count_dec(skb);
+	qdf_mem_skb_dec(skb->truesize);
 	if (nbuf_free_cb)
 		nbuf_free_cb(skb);
 	else