1 /*
2 * Copyright (c) 2020 The Linux Foundation. All rights reserved.
3 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for
6 * any purpose with or without fee is hereby granted, provided that the
7 * above copyright notice and this permission notice appear in all
8 * copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /**
21 * DOC: wlan_hdd_sysfs_mem_stats.h
22 *
23 * Implementation to add sysfs node wlan_mem_stats
24 */
25
26 #ifndef _WLAN_HDD_SYSFS_MEM_STATS
27 #define _WLAN_HDD_SYSFS_MEM_STATS
28
29 #if defined(WLAN_SYSFS) && defined(CONFIG_WLAN_SYSFS_MEM_STATS)
30 /**
31 * hdd_sysfs_mem_stats_create() - Function to create
32 * wlan_mem_stats sysfs node to capture host driver memory usage
33 * @wlan_kobject: sysfs wlan kobject
34 *
35 * file path: /sys/kernel/wifi/wlan/wlan_mem_stats
36 *
37 * usage: cat /sys/kernel/wifi/wlan/wlan_mem_stats
38 *
39 * Return: 0 on success and errno on failure
40 */
41 int hdd_sysfs_mem_stats_create(struct kobject *wlan_kobject);
42
43 /**
44 * hdd_sysfs_mem_stats_destroy() - API to destroy wlan_mem_stats
45 * @wlan_kobject: sysfs wlan kobject
46 *
47 * Return: none
48 */
49 void hdd_sysfs_mem_stats_destroy(struct kobject *wlan_kobject);
50 #else
51 static inline int
hdd_sysfs_mem_stats_create(struct kobject * wlan_kobject)52 hdd_sysfs_mem_stats_create(struct kobject *wlan_kobject)
53 {
54 return 0;
55 }
56
57 static inline void
hdd_sysfs_mem_stats_destroy(struct kobject * wlan_kobject)58 hdd_sysfs_mem_stats_destroy(struct kobject *wlan_kobject)
59 {
60 }
61 #endif /* WLAN_SYSFS && CONFIG_WLAN_SYSFS_MEM_STATS */
62 #endif /* _WLAN_HDD_SYSFS_MEM_STATS */
63
64