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sunrpc: add a debugfs rpc_xprt directory with an info file in it

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Add a new directory heirarchy under the debugfs sunrpc/ directory:

    sunrpc/
        rpc_xprt/
            <xprt id>/

Within that directory, we can put files that give info about the
xprts. We do have the (minor) problem that there is no succinct,
unique identifier for rpc_xprts. So we generate them synthetically
with a static atomic_t counter.

For now, this directory just holds an "info" file, but we may add
other files to it in the future.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Jeff Layton 2014-11-26 14:44:44 -05:00 • committed by Trond Myklebust
parent b4b9d2ccf0
commit 388f0c7767
4 changed files with 134 additions and 7 deletions
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15
include/linux/sunrpc/debug.h
View file

@ -55,6 +55,7 @@ extern unsigned int nlm_debug;
*/
struct rpc_clnt;
struct rpc_xprt;
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
void rpc_register_sysctl(void);
@ -63,6 +64,8 @@ int sunrpc_debugfs_init(void);
void sunrpc_debugfs_exit(void);
int rpc_clnt_debugfs_register(struct rpc_clnt *);
void rpc_clnt_debugfs_unregister(struct rpc_clnt *);
int rpc_xprt_debugfs_register(struct rpc_xprt *);
void rpc_xprt_debugfs_unregister(struct rpc_xprt *);
#else
static inline int
sunrpc_debugfs_init(void)
@ -87,6 +90,18 @@ rpc_clnt_debugfs_unregister(struct rpc_clnt *clnt)
{
return;
}
static inline int
rpc_xprt_debugfs_register(struct rpc_xprt *xprt)
{
return 0;
}
static inline void
rpc_xprt_debugfs_unregister(struct rpc_xprt *xprt)
{
return;
}
#endif
#endif /* _LINUX_SUNRPC_DEBUG_H_ */