From f1d86b61fb6692c592e937dfb5069e4057855a3b Mon Sep 17 00:00:00 2001 From: Hendrik Brueckner Date: Wed, 18 Sep 2013 17:21:34 +0200 Subject: [PATCH] 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 --- Documentation/s390/s390dbf.txt | 10 ++++++++++ arch/s390/include/asm/debug.h | 5 +++++ 2 files changed, 15 insertions(+) diff --git a/Documentation/s390/s390dbf.txt b/Documentation/s390/s390dbf.txt index fcaf0b4..3da1633 100644 --- a/Documentation/s390/s390dbf.txt +++ b/Documentation/s390/s390dbf.txt @@ -158,6 +158,16 @@ 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); Parameter: none diff --git a/arch/s390/include/asm/debug.h b/arch/s390/include/asm/debug.h index 188c505..530c15e 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) { -- 2.7.4