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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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3
include/linux/sunrpc/xprt.h
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@ -239,6 +239,9 @@ struct rpc_xprt {
struct net *xprt_net;
const char *servername;
const char *address_strings[RPC_DISPLAY_MAX];
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
struct dentry *debugfs; /* debugfs directory */
#endif
};
#if defined(CONFIG_SUNRPC_BACKCHANNEL)