sunrpc: add debugfs file for displaying client rpc_task queue

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It's possible to get a dump of the RPC task queue by writing a value to
/proc/sys/sunrpc/rpc_debug. If you write any value to that file, you get
a dump of the RPC client task list into the log buffer. This is a rather
inconvenient interface however, and makes it hard to get immediate info
about the task queue.

Add a new directory hierarchy under debugfs:

    sunrpc/
        rpc_clnt/
            <clientid>/

Within each clientid directory we create a new "tasks" file that will
dump info similar to what shows up in the log buffer, but with a few
small differences -- we avoid printing raw kernel addresses in favor of
symbolic names and the XID is also displayed.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

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This commit is contained in:

Jeff Layton 2014-11-26 14:44:43 -05:00 • committed by Trond Myklebust

parent ea5264138d

commit b4b9d2ccf0

7 changed files with 245 additions and 1 deletions

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4

include/linux/sunrpc/clnt.h

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31

include/linux/sunrpc/debug.h

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