include/linux/sunrpc/debug.h

Source file repositories/reference/linux-study-clean/include/linux/sunrpc/debug.h

File Facts

System
Linux kernel
Corpus path
include/linux/sunrpc/debug.h
Extension
.h
Size
2498 bytes
Lines
117
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _LINUX_SUNRPC_DEBUG_H_
#define _LINUX_SUNRPC_DEBUG_H_

#include <uapi/linux/sunrpc/debug.h>

/*
 * Debugging macros etc
 */
extern unsigned int		rpc_debug;
extern unsigned int		nfs_debug;
extern unsigned int		nfsd_debug;
extern unsigned int		nlm_debug;

#define dprintk(fmt, ...)						\
	dfprintk(FACILITY, fmt, ##__VA_ARGS__)
#define dprintk_rcu(fmt, ...)						\
	dfprintk_rcu(FACILITY, fmt, ##__VA_ARGS__)

#undef ifdebug
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define ifdebug(fac)		if (unlikely(rpc_debug & RPCDBG_##fac))

# if IS_ENABLED(CONFIG_SUNRPC_DEBUG_TRACE)
#  define __sunrpc_printk(fmt, ...)	trace_printk(fmt, ##__VA_ARGS__)
# else
#  define __sunrpc_printk(fmt, ...)	printk(KERN_DEFAULT fmt, ##__VA_ARGS__)
# endif

# define dfprintk(fac, fmt, ...)					\
do {									\
	ifdebug(fac)							\
		__sunrpc_printk(fmt, ##__VA_ARGS__);			\
	else								\
		no_printk(fmt, ##__VA_ARGS__);				\
} while (0)

# define dfprintk_rcu(fac, fmt, ...)					\
do {									\
	ifdebug(fac) {							\
		rcu_read_lock();					\
		__sunrpc_printk(fmt, ##__VA_ARGS__);			\
		rcu_read_unlock();					\
	} else {							\
		no_printk(fmt, ##__VA_ARGS__);				\
	}								\
} while (0)

#else
# define ifdebug(fac)		if (0)
# define dfprintk(fac, fmt, ...)	no_printk(fmt, ##__VA_ARGS__)
# define dfprintk_rcu(fac, fmt, ...)	no_printk(fmt, ##__VA_ARGS__)
#endif

/*
 * Sysctl interface for RPC debugging
 */

struct rpc_clnt;
struct rpc_xprt;

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
void		rpc_register_sysctl(void);
void		rpc_unregister_sysctl(void);
void		sunrpc_debugfs_init(void);
void		sunrpc_debugfs_exit(void);
void		rpc_clnt_debugfs_register(struct rpc_clnt *);
void		rpc_clnt_debugfs_unregister(struct rpc_clnt *);
void		rpc_xprt_debugfs_register(struct rpc_xprt *);
void		rpc_xprt_debugfs_unregister(struct rpc_xprt *);
#else
static inline void
sunrpc_debugfs_init(void)
{
	return;
}

static inline void
sunrpc_debugfs_exit(void)
{
	return;
}

static inline void
rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
{
	return;
}

static inline void
rpc_clnt_debugfs_unregister(struct rpc_clnt *clnt)

Annotation

Implementation Notes