ALSA: pcm: Add snd_printd_ratelimit() (bcbb1553) · Commits · 戴 / test

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>

include/sound/core.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@
		#include <linux/rwsem.h> /* struct rw_semaphore */
		#include <linux/pm.h> /* pm_message_t */
		#include <linux/stringify.h>
		#include <linux/printk.h>

		/* number of supported soundcards */
		#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")

		/**
		* Suppress high rates of output when CONFIG_SND_DEBUG is enabled.
		*/
		#define snd_printd_ratelimit() printk_ratelimit()

		/**
		* snd_BUG_ON - debugging check macro
		* @cond: condition to evaluate
		@@ -398,6 +404,8 @@ static inline void _snd_printd(int level, const char *format, ...) {}
		unlikely(__ret_warn_on); \
		})

		static inline bool snd_printd_ratelimit(void) { return false; }

		#endif /* CONFIG_SND_DEBUG */

		#ifdef CONFIG_SND_DEBUG_VERBOSE

Admin message