Messages in this thread |  | | From | Jim Cromie <> | | Subject | [PATCH 0/11] dynamic_debug: allow multiple pending queries on boot-line | | Date | Tue, 28 Jun 2011 01:09:41 -0600 |
| |
This patchset extends dynamic-debug facility to allow use of pr_debug() within a loadable module's module_init() function. Query/rules can be given on the boot-line, and are saved to a pending list if they cannot be applied immediately. Later, when the module is being loaded, the pending list is scanned, and matching rules are applied. Thus pr_debug() calls in the module's initialization function are active when it is invoked.
Other features: - dynamic_debug.verbose=1 at boot-time or while running - ddebug_query can specify multiple queries, separated by ';' - warn on multiple uses of a single match-spec in single query - tolerate bad queries in ddebug_query w/o taking down facility
Possible additions (not done now)
- <dbgfs>/dynamic_debug/pending to show pending query/rules
- scan existing pending list before adding new entry currently same rule can be appended multiple times
- persistent queries when module is unloaded, applied rules are deleted
[PATCH 01/11] dynamic_debug: allow changing of dynamic_debug verbosity any time [PATCH 02/11] dynamic_debug: trim source-path prefix from dynamic_debug/control [PATCH 03/11] dynamic_debug: process multiple commands on a line [PATCH 04/11] dynamic_debug: warn when >1 of each type of match-spec is given [PATCH 05/11] dynamic_debug: use pr_info instead of printk(KERN_INFO .. [PATCH 06/11] dynamic_debug: KERN_ERR should not depend upon verbosity [PATCH 07/11] dynamic_debug: dont kill entire facility on error parsing ddebug_query [PATCH 08/11] dynamic_debug: return int from ddebug_change [PATCH 09/11] dynamic_debug: add_to_pending() saves non-matching queries for later. [PATCH 10/11] dynamic_debug: call apply_pending_queries from ddebug_add_module [PATCH 11/11] dynamic_debug: document use of pendinq queries at boot-time
|  |