On Sun, Sep 04, 2022 at 03:40:58PM -0600, Jim Cromie wrote: > Demonstrate use of DECLARE_DYNDBG_CLASSMAP macro, and expose them as > sysfs-nodes for testing. Wait, why sysfs? sysfs isn't for testing, why not use debugfs? > > For each of the 4 class-map-types: > > - declare a class-map of that type, > - declare the enum corresponding to those class-names > - share _base across 0..30 range > - add a __pr_debug_cls() call for each class-name > - declare 2 sysnodes for each class-map > for 'p' flag, and future 'T' flag > > These declarations create the following sysfs parameter interface: > > :#> pwd > /sys/module/test_dynamic_debug/parameters > :#> ls > T_disjoint_bits T_disjoint_names T_level_names T_level_num do_prints > p_disjoint_bits p_disjoint_names p_level_names p_level_num What is in these files? For sysfs stuff, you need Documentation/ABI entries so that you can't abuse sysfs. With debugfs, you can do anything you want :) thanks, greg k-h
