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Message-Id: <1383142901-6186-2-git-send-email-changbin.du@gmail.com> Date: Wed, 30 Oct 2013 22:21:41 +0800 From: "Du, Changbin" <changbin.du@...il.com> To: jbaron@...mai.com, joe@...ches.com Cc: linux-kernel@...r.kernel.org, marcel@...tmann.org, "Du, Changbin" <changbin.du@...il.com> Subject: [PATCH v4 2/2] dynamic-debug-howto.txt: update since new wildcard support From: "Du, Changbin" <changbin.du@...il.com> Add the usage of using new feature wildcard support. Signed-off-by: Du, Changbin <changbin.du@...il.com> --- Documentation/dynamic-debug-howto.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/dynamic-debug-howto.txt b/Documentation/dynamic-debug-howto.txt index 1bbdcfc..46325eb 100644 --- a/Documentation/dynamic-debug-howto.txt +++ b/Documentation/dynamic-debug-howto.txt @@ -108,6 +108,12 @@ If your query set is big, you can batch them too: ~# cat query-batch-file > <debugfs>/dynamic_debug/control +A another way is to use wildcard. The match rule support '*' (matches +zero or more characters) and '?' (matches exactly one character).For +example, you can match all usb drivers: + + ~# echo "file drivers/usb/* +p" > <debugfs>/dynamic_debug/control + At the syntactical level, a command comprises a sequence of match specifications, followed by a flags change specification. @@ -315,6 +321,9 @@ nullarbor:~ # echo -n 'func svc_process -p' > nullarbor:~ # echo -n 'format "nfsd: READ" +p' > <debugfs>/dynamic_debug/control +// enable messages in files of which the pathes include string "usb" +nullarbor:~ # echo -n '*usb* +p' > <debugfs>/dynamic_debug/control + // enable all messages nullarbor:~ # echo -n '+p' > <debugfs>/dynamic_debug/control -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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