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ALSA: pcm: Add snd_printd_ratelimit()

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Direct calls to printk_limit() will emit log noise even when CONFIG_SND_DEBUG is not
defined. Add a wrapper macro around printk_limit() that is conditionally defined by
CONFIG_SND_DEBUG.

Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Yacine Belkadi <yacine.belkadi.1@gmail.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Tim Gardner 2013-08-16 11:18:59 -06:00 • committed by Takashi Iwai
parent c841ad2a9b
commit bcbb15530e
1 changed files with 8 additions and 0 deletions
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8
include/sound/core.h
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@ -27,6 +27,7 @@
#include <linux/rwsem.h> /* struct rw_semaphore */ #include <linux/rwsem.h> /* struct rw_semaphore */
#include <linux/pm.h> /* pm_message_t */ #include <linux/pm.h> /* pm_message_t */
#include <linux/stringify.h> #include <linux/stringify.h>
#include <linux/printk.h>
/* number of supported soundcards */ /* number of supported soundcards */
#ifdef CONFIG_SND_DYNAMIC_MINORS #ifdef CONFIG_SND_DYNAMIC_MINORS
@ -375,6 +376,11 @@ void __snd_printk(unsigned int level, const char *file, int line,
*/ */
#define snd_BUG() WARN(1, "BUG?\n") #define snd_BUG() WARN(1, "BUG?\n")
/**
* Suppress high rates of output when CONFIG_SND_DEBUG is enabled.
*/
#define snd_printd_ratelimit() printk_ratelimit()
/** /**
* snd_BUG_ON - debugging check macro * snd_BUG_ON - debugging check macro
* @cond: condition to evaluate * @cond: condition to evaluate
@ -398,6 +404,8 @@ static inline void _snd_printd(int level, const char *format, ...) {}
unlikely(__ret_warn_on); \ unlikely(__ret_warn_on); \
}) })
static inline bool snd_printd_ratelimit(void) { return false; }
#endif /* CONFIG_SND_DEBUG */ #endif /* CONFIG_SND_DEBUG */
#ifdef CONFIG_SND_DEBUG_VERBOSE #ifdef CONFIG_SND_DEBUG_VERBOSE