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author | Takashi Iwai <tiwai@suse.de> | 2009-09-10 15:33:03 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2009-09-10 15:33:03 +0200 |
commit | 9d416811f8cab11bf595b2880c557c33e3ae1ae9 (patch) | |
tree | b680aba747156ce228bd6bf9c54ca722d0d8e1ed /sound/core | |
parent | df9200dd0454c91c5436c22072611f0edd3b5f42 (diff) | |
parent | cf0baf16c3a3b3dd67ea3df346479032ab10e988 (diff) | |
download | kernel_samsung_smdk4412-9d416811f8cab11bf595b2880c557c33e3ae1ae9.zip kernel_samsung_smdk4412-9d416811f8cab11bf595b2880c557c33e3ae1ae9.tar.gz kernel_samsung_smdk4412-9d416811f8cab11bf595b2880c557c33e3ae1ae9.tar.bz2 |
Merge branch 'topic/snd-printk' into for-linus
* topic/snd-printk:
ALSA: Fixed a typo of printk()
ALSA: Add debug module option
ALSA: core - strip too long file names in snd_print*()
Diffstat (limited to 'sound/core')
-rw-r--r-- | sound/core/misc.c | 75 |
1 files changed, 48 insertions, 27 deletions
diff --git a/sound/core/misc.c b/sound/core/misc.c index a9710e0..23a032c 100644 --- a/sound/core/misc.c +++ b/sound/core/misc.c @@ -24,6 +24,20 @@ #include <linux/ioport.h> #include <sound/core.h> +#ifdef CONFIG_SND_DEBUG + +#ifdef CONFIG_SND_DEBUG_VERBOSE +#define DEFAULT_DEBUG_LEVEL 2 +#else +#define DEFAULT_DEBUG_LEVEL 1 +#endif + +static int debug = DEFAULT_DEBUG_LEVEL; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Debug level (0 = disable)"); + +#endif /* CONFIG_SND_DEBUG */ + void release_and_free_resource(struct resource *res) { if (res) { @@ -35,46 +49,53 @@ void release_and_free_resource(struct resource *res) EXPORT_SYMBOL(release_and_free_resource); #ifdef CONFIG_SND_VERBOSE_PRINTK -void snd_verbose_printk(const char *file, int line, const char *format, ...) +/* strip the leading path if the given path is absolute */ +static const char *sanity_file_name(const char *path) { - va_list args; - - if (format[0] == '<' && format[1] >= '0' && format[1] <= '7' && format[2] == '>') { - char tmp[] = "<0>"; + if (*path == '/') + return strrchr(path, '/') + 1; + else + return path; +} + +/* print file and line with a certain printk prefix */ +static int print_snd_pfx(unsigned int level, const char *path, int line, + const char *format) +{ + const char *file = sanity_file_name(path); + char tmp[] = "<0>"; + const char *pfx = level ? KERN_DEBUG : KERN_DEFAULT; + int ret = 0; + + if (format[0] == '<' && format[2] == '>') { tmp[1] = format[1]; - printk("%sALSA %s:%d: ", tmp, file, line); - format += 3; - } else { - printk("ALSA %s:%d: ", file, line); + pfx = tmp; + ret = 1; } - va_start(args, format); - vprintk(format, args); - va_end(args); + printk("%sALSA %s:%d: ", pfx, file, line); + return ret; } - -EXPORT_SYMBOL(snd_verbose_printk); +#else +#define print_snd_pfx(level, path, line, format) 0 #endif -#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK) -void snd_verbose_printd(const char *file, int line, const char *format, ...) +#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) +void __snd_printk(unsigned int level, const char *path, int line, + const char *format, ...) { va_list args; - if (format[0] == '<' && format[1] >= '0' && format[1] <= '7' && format[2] == '>') { - char tmp[] = "<0>"; - tmp[1] = format[1]; - printk("%sALSA %s:%d: ", tmp, file, line); - format += 3; - } else { - printk(KERN_DEBUG "ALSA %s:%d: ", file, line); - } +#ifdef CONFIG_SND_DEBUG + if (debug < level) + return; +#endif va_start(args, format); + if (print_snd_pfx(level, path, line, format)) + format += 3; /* skip the printk level-prefix */ vprintk(format, args); va_end(args); - } - -EXPORT_SYMBOL(snd_verbose_printd); +EXPORT_SYMBOL_GPL(__snd_printk); #endif #ifdef CONFIG_PCI |