On 12/07/16 14:28, Dave Gordon wrote:
On 12/07/16 10:06, Tvrtko Ursulin wrote:
On 11/07/16 19:01, Dave Gordon wrote:
We had only DRM_INFO() and DRM_ERROR(), whereas the underlying printk()
provides several other useful intermediate levels such as NOTICE and
WARNING. So this patch fills out the set by providing both regular and
once-only macros for each of the levels INFO, NOTICE, and WARNING, using
a common underlying macro that does all the token-pasting.
DRM_ERROR is unchanged, as it's not just a printk wrapper.
Signed-off-by: Dave Gordon <david.s.gordon@xxxxxxxxx>
---
include/drm/drmP.h | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index cf918e3e..82648b1 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -162,6 +162,26 @@ void drm_err(const char *format, ...);
/** \name Macros to make printk easier */
/*@{*/
+#define _DRM_PRINTK(once, level, fmt, ...) \
+ do { \
+ printk##once(KERN_##level "[" DRM_NAME "] " fmt, \
+ ##__VA_ARGS__); \
+ } while (0)
+
+#define DRM_INFO(fmt, ...) \
+ _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)
+#define DRM_NOTE(fmt, ...) \
+ _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)
To me DRM_NOTICE would be better to keep consistent with kernel naming
for the equivalent log level.
Maybe, but then we'd probably want DRM_WARNING() as well, and the names
get cumbersome, especially when you want to tag "_ONCE" on the end as
well. I liked the consistency of {INFO,NOTE,WARN} all being four letters ;)
Any comments from dri-devel on INFO/NOTE/WARN vs INFO/NOTICE/WARNING?
Or any other suggestions?
Luckily kernel offers us precedent to avoid the DRM_WARNING verbosity
and establish the only exception where log level symbolic name does not
match the printk helper name. :)
#define pr_emerg(fmt, ...) \
printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
#define pr_alert(fmt, ...) \
printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_crit(fmt, ...) \
printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_err(fmt, ...) \
printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warning(fmt, ...) \
printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warn pr_warning
#define pr_notice(fmt, ...) \
printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
#define pr_info(fmt, ...) \
printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
And short form is indeed more popular:
$ grep pr_warn\( drivers/ -r | wc -l
1935
$ grep pr_warning\( drivers/ -r | wc -l
141
Regards,
Tvrtko
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