From: Hendrik Brueckner Date: Wed, 18 Sep 2013 15:21:34 +0000 (+0200) Subject: s390/s390dbf: add debug_level_enabled() function X-Git-Tag: firefly_0821_release~176^2~5053^2~46 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f1d86b61fb6692c592e937dfb5069e4057855a3b;p=firefly-linux-kernel-4.4.55.git s390/s390dbf: add debug_level_enabled() function Add the debug_level_enabled() function to check if debug events for a particular level would be logged. This might help to save cycles for debug events that require additional information collection. Signed-off-by: Hendrik Brueckner Signed-off-by: Martin Schwidefsky --- diff --git a/Documentation/s390/s390dbf.txt b/Documentation/s390/s390dbf.txt index fcaf0b4efba2..3da163383c93 100644 --- a/Documentation/s390/s390dbf.txt +++ b/Documentation/s390/s390dbf.txt @@ -157,6 +157,16 @@ Return Value: none Description: Sets new actual debug level if new_level is valid. +--------------------------------------------------------------------------- +bool debug_level_enabled (debug_info_t * id, int level); + +Parameter: id: handle for debug log + level: debug level + +Return Value: True if level is less or equal to the current debug level. + +Description: Returns true if debug events for the specified level would be + logged. Otherwise returns false. --------------------------------------------------------------------------- void debug_stop_all(void); diff --git a/arch/s390/include/asm/debug.h b/arch/s390/include/asm/debug.h index 188c5052a20a..530c15eb01e9 100644 --- a/arch/s390/include/asm/debug.h +++ b/arch/s390/include/asm/debug.h @@ -107,6 +107,11 @@ void debug_set_level(debug_info_t* id, int new_level); void debug_set_critical(void); void debug_stop_all(void); +static inline bool debug_level_enabled(debug_info_t* id, int level) +{ + return level <= id->level; +} + static inline debug_entry_t* debug_event(debug_info_t* id, int level, void* data, int length) {