1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/* Internal definitions for network filesystem support
 3 *
 4 * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
 5 * Written by David Howells (dhowells@redhat.com)
 6 */
 7
 8#ifdef pr_fmt
 9#undef pr_fmt
10#endif
11
12#define pr_fmt(fmt) "netfs: " fmt
13
14/*
15 * read_helper.c
16 */
17extern unsigned int netfs_debug;
18
19/*
20 * stats.c
21 */
22#ifdef CONFIG_NETFS_STATS
23extern atomic_t netfs_n_rh_readahead;
24extern atomic_t netfs_n_rh_readpage;
25extern atomic_t netfs_n_rh_rreq;
26extern atomic_t netfs_n_rh_sreq;
27extern atomic_t netfs_n_rh_download;
28extern atomic_t netfs_n_rh_download_done;
29extern atomic_t netfs_n_rh_download_failed;
30extern atomic_t netfs_n_rh_download_instead;
31extern atomic_t netfs_n_rh_read;
32extern atomic_t netfs_n_rh_read_done;
33extern atomic_t netfs_n_rh_read_failed;
34extern atomic_t netfs_n_rh_zero;
35extern atomic_t netfs_n_rh_short_read;
36extern atomic_t netfs_n_rh_write;
37extern atomic_t netfs_n_rh_write_begin;
38extern atomic_t netfs_n_rh_write_done;
39extern atomic_t netfs_n_rh_write_failed;
40extern atomic_t netfs_n_rh_write_zskip;
41
42
43static inline void netfs_stat(atomic_t *stat)
44{
45	atomic_inc(stat);
46}
47
48static inline void netfs_stat_d(atomic_t *stat)
49{
50	atomic_dec(stat);
51}
52
53#else
54#define netfs_stat(x) do {} while(0)
55#define netfs_stat_d(x) do {} while(0)
56#endif
57
58/*****************************************************************************/
59/*
60 * debug tracing
61 */
62#define dbgprintk(FMT, ...) \
63	printk("[%-6.6s] "FMT"\n", current->comm, ##__VA_ARGS__)
64
65#define kenter(FMT, ...) dbgprintk("==> %s("FMT")", __func__, ##__VA_ARGS__)
66#define kleave(FMT, ...) dbgprintk("<== %s()"FMT"", __func__, ##__VA_ARGS__)
67#define kdebug(FMT, ...) dbgprintk(FMT, ##__VA_ARGS__)
68
69#ifdef __KDEBUG
70#define _enter(FMT, ...) kenter(FMT, ##__VA_ARGS__)
71#define _leave(FMT, ...) kleave(FMT, ##__VA_ARGS__)
72#define _debug(FMT, ...) kdebug(FMT, ##__VA_ARGS__)
73
74#elif defined(CONFIG_NETFS_DEBUG)
75#define _enter(FMT, ...)			\
76do {						\
77	if (netfs_debug)			\
78		kenter(FMT, ##__VA_ARGS__);	\
79} while (0)
80
81#define _leave(FMT, ...)			\
82do {						\
83	if (netfs_debug)			\
84		kleave(FMT, ##__VA_ARGS__);	\
85} while (0)
86
87#define _debug(FMT, ...)			\
88do {						\
89	if (netfs_debug)			\
90		kdebug(FMT, ##__VA_ARGS__);	\
91} while (0)
92
93#else
94#define _enter(FMT, ...) no_printk("==> %s("FMT")", __func__, ##__VA_ARGS__)
95#define _leave(FMT, ...) no_printk("<== %s()"FMT"", __func__, ##__VA_ARGS__)
96#define _debug(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
97#endif