From afe1323c76c84c5c5bf50ef8fb7aa593fe2ca2e0 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Wed, 1 Oct 2008 18:58:21 +0100 Subject: [PATCH] [compiler] Allow for selective disabling of debug levels at runtime The usefulness of DBGLVL_IO is limited by the fact that many cards require large numbers of uninteresting I/O reads/writes at device probe time, typically when driving a bit-bashing I2C/SPI bus to read the MAC address. This patch adds the DBG_DISABLE() and DBG_ENABLE() macros, which can be used to temporarily disable and re-enable selected debug levels. Note that debug levels must still be enabled in the build in order to function at all: you can't use DBG_ENABLE(DBGLVL_IO) in an object built with DEBUG=object:1 and expect it to do anything. --- src/include/compiler.h | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/src/include/compiler.h b/src/include/compiler.h index a6532dad..b6a6f8e2 100644 --- a/src/include/compiler.h +++ b/src/include/compiler.h @@ -131,11 +131,26 @@ extern void dbg_decolourise ( void ); extern void dbg_hex_dump_da ( unsigned long dispaddr, const void *data, unsigned long len ); -/* Compatibility with existing Makefile */ #if DEBUG_SYMBOL -#define DBGLVL DEBUG_SYMBOL +#define DBGLVL_MAX DEBUG_SYMBOL +#else +#define DBGLVL_MAX 0 +#endif + +/* Allow for selective disabling of enabled debug levels */ +#if DBGLVL_MAX +int __debug_disable; +#define DBGLVL ( DBGLVL_MAX & ~__debug_disable ) +#define DBG_DISABLE( level ) do { \ + __debug_disable |= ( (level) & DBGLVL_MAX ); \ + } while ( 0 ) +#define DBG_ENABLE( level ) do { \ + __debug_disable &= ~( (level) & DBGLVL_MAX ); \ + } while ( 0 ) #else #define DBGLVL 0 +#define DBG_DISABLE( level ) do { } while ( 0 ) +#define DBG_ENABLE( level ) do { } while ( 0 ) #endif #define DBGLVL_LOG 1