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authorJeff Layton <jlayton@primarydata.com>2014-11-26 22:44:43 +0300
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-11-27 21:14:51 +0300
commitb4b9d2ccf0be61c69213f6ae4e33377c05194ef4 (patch)
tree54709e972d890b22b6de65124f87953534aaa9a3 /net/sunrpc/Kconfig
parentea5264138d240825a7e3f11d5945d568b74efb91 (diff)
downloadlinux-b4b9d2ccf0be61c69213f6ae4e33377c05194ef4.tar.xz
sunrpc: add debugfs file for displaying client rpc_task queue
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>
Diffstat (limited to 'net/sunrpc/Kconfig')
-rw-r--r--net/sunrpc/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig
index 0754d0f466d2..fb78117b896c 100644
--- a/net/sunrpc/Kconfig
+++ b/net/sunrpc/Kconfig
@@ -35,6 +35,7 @@ config RPCSEC_GSS_KRB5
config SUNRPC_DEBUG
bool "RPC: Enable dprintk debugging"
depends on SUNRPC && SYSCTL
+ select DEBUG_FS
help
This option enables a sysctl-based debugging interface
that is be used by the 'rpcdebug' utility to turn on or off