On Tue, 2020-06-09 at 13:45 +0300, Stanimir Varbanov wrote: > Hello, > > Here is the third version of dynamic debug improvements in Venus > driver. As has been suggested on previous version by Joe [1] I've > made the relevant changes in dynamic debug core to handle leveling > as more generic way and not open-code/workaround it in the driver. > > About changes: > - added change in the dynamic_debug and in documentation > - added respective pr_debug_level and dev_dbg_level > > regards, > Stan > > [1] https://lkml.org/lkml/2020/5/21/668
This capability is already clumsily used by many drivers that use a module level "debug" flag. $ git grep -P "MODULE_PARM.*\bdebug\b"|wc -l 501 That's a _lot_ of homebrewed mechanisms. Making dynamic debug have this as a feature would help consolidate and standardize the capability. ftrace is definitely useful, but not quite as lightweight and doesn't have the typical uses.
