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| author | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:43:20 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:43:20 +0100 |
| commit | 65370bdf881e20907e7a53abab9b8c0bc5f60a6b (patch) | |
| tree | 0d32a494e873b7b92dbfab0e67ffeef597ee8108 /Documentation/dynamic-debug-howto.txt | |
| parent | e207552e64ea053a33e856828ad7915484911d06 (diff) | |
| parent | 5cb480f6b488128140c940abff3c36f524a334a8 (diff) | |
Merge branch 'linus' into core/locking
Refresh the topic.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/dynamic-debug-howto.txt')
| -rw-r--r-- | Documentation/dynamic-debug-howto.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/dynamic-debug-howto.txt b/Documentation/dynamic-debug-howto.txt index 1bbdcfcf1f13..46325eb2ea76 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 |