[PATCH v3 1/2] drm: Introduce DRM_DEV_* log messages
Sean Paul
seanpaul at chromium.org
Fri Aug 12 20:29:37 UTC 2016
This patch consolidates all the various log functions/macros into
one uber function, drm_printk. It also introduces some new DRM_DEV_*
variants that use dev_printk to print the device name, which helps
delineate multiple devices of the same type.
Signed-off-by: Sean Paul <seanpaul at chromium.org>
---
Changes in v2:
- Use dev_printk for the dev variant (Chris Wilson)
Changes in v3:
- Rename drm_log to drm_dev_printk (Chris Wilson)
- Break out drm_printk from drm_dev_printk to reduce
image growth due to passing NULL around (Chris Wilson)
drivers/gpu/drm/drm_drv.c | 25 ++++++---
include/drm/drmP.h | 140 +++++++++++++++++++++++++++-------------------
2 files changed, 101 insertions(+), 64 deletions(-)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 57ce973..e141ead 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -63,37 +63,46 @@ static struct idr drm_minors_idr;
static struct dentry *drm_debugfs_root;
-void drm_err(const char *format, ...)
+void drm_dev_printk(const struct device *dev, const char *level,
+ unsigned int category, const char *function_name,
+ const char *prefix, const char *format, ...)
{
struct va_format vaf;
va_list args;
- va_start(args, format);
+ if (category != DRM_UT_NONE && !(drm_debug & category))
+ return;
+ va_start(args, format);
vaf.fmt = format;
vaf.va = &args;
- printk(KERN_ERR "[" DRM_NAME ":%ps] *ERROR* %pV",
- __builtin_return_address(0), &vaf);
+ dev_printk(level, dev, "[" DRM_NAME ":%s]%s %pV", function_name, prefix,
+ &vaf);
va_end(args);
}
-EXPORT_SYMBOL(drm_err);
+EXPORT_SYMBOL(drm_dev_printk);
-void drm_ut_debug_printk(const char *function_name, const char *format, ...)
+void drm_printk(const char *level, unsigned int category,
+ const char *function_name, const char *prefix,
+ const char *format, ...)
{
struct va_format vaf;
va_list args;
+ if (category != DRM_UT_NONE && !(drm_debug & category))
+ return;
+
va_start(args, format);
vaf.fmt = format;
vaf.va = &args;
- printk(KERN_DEBUG "[" DRM_NAME ":%s] %pV", function_name, &vaf);
+ printk("%s[" DRM_NAME ":%s]%s %pV", level, function_name, prefix, &vaf);
va_end(args);
}
-EXPORT_SYMBOL(drm_ut_debug_printk);
+EXPORT_SYMBOL(drm_printk);
/*
* DRM Minors
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index f8e87fd..94eb138 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -127,6 +127,7 @@ struct dma_buf_attachment;
* run-time by echoing the debug value in its sysfs node:
* # echo 0xf > /sys/module/drm/parameters/debug
*/
+#define DRM_UT_NONE 0x00
#define DRM_UT_CORE 0x01
#define DRM_UT_DRIVER 0x02
#define DRM_UT_KMS 0x04
@@ -134,11 +135,15 @@ struct dma_buf_attachment;
#define DRM_UT_ATOMIC 0x10
#define DRM_UT_VBL 0x20
-extern __printf(2, 3)
-void drm_ut_debug_printk(const char *function_name,
- const char *format, ...);
-extern __printf(1, 2)
-void drm_err(const char *format, ...);
+extern __printf(6, 7)
+void drm_dev_printk(const struct device *dev, const char *level,
+ unsigned int category, const char *function_name,
+ const char *prefix, const char *format, ...);
+
+extern __printf(5, 6)
+void drm_printk(const char *level, unsigned int category,
+ const char *function_name, const char *prefix,
+ const char *format, ...);
/***********************************************************************/
/** \name DRM template customization defaults */
@@ -169,8 +174,12 @@ void drm_err(const char *format, ...);
* \param fmt printf() like format string.
* \param arg arguments
*/
-#define DRM_ERROR(fmt, ...) \
- drm_err(fmt, ##__VA_ARGS__)
+#define DRM_DEV_ERROR(dev, fmt, ...) \
+ drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\
+ fmt, ##__VA_ARGS__)
+#define DRM_ERROR(fmt, ...) \
+ drm_printk(KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*", fmt, \
+ ##__VA_ARGS__)
/**
* Rate limited error output. Like DRM_ERROR() but won't flood the log.
@@ -178,21 +187,33 @@ void drm_err(const char *format, ...);
* \param fmt printf() like format string.
* \param arg arguments
*/
-#define DRM_ERROR_RATELIMITED(fmt, ...) \
+#define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...) \
({ \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
\
if (__ratelimit(&_rs)) \
- drm_err(fmt, ##__VA_ARGS__); \
+ DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__); \
})
+#define DRM_ERROR_RATELIMITED(fmt, ...) \
+ DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__)
-#define DRM_INFO(fmt, ...) \
- printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
+#define DRM_DEV_INFO(dev, fmt, ...) \
+ drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt, \
+ ##__VA_ARGS__)
+#define DRM_INFO(fmt, ...) \
+ drm_printk(KERN_INFO, DRM_UT_NONE, __func__, "", fmt, ##__VA_ARGS__)
-#define DRM_INFO_ONCE(fmt, ...) \
- printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
+#define DRM_DEV_INFO_ONCE(dev, fmt, ...) \
+({ \
+ static bool __print_once __read_mostly; \
+ if (!__print_once) { \
+ __print_once = true; \
+ DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__); \
+ } \
+})
+#define DRM_INFO_ONCE(fmt, ...) DRM_DEV_INFO_ONCE(NULL, fmt, ##__VA_ARGS__)
/**
* Debug output.
@@ -200,52 +221,51 @@ void drm_err(const char *format, ...);
* \param fmt printf() like format string.
* \param arg arguments
*/
+#define DRM_DEV_DEBUG(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, \
+ ##args)
#define DRM_DEBUG(fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_CORE)) \
- drm_ut_debug_printk(__func__, fmt, ##args); \
- } while (0)
+ drm_printk(KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, ##args)
+#define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "", \
+ fmt, ##args)
#define DRM_DEBUG_DRIVER(fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_DRIVER)) \
- drm_ut_debug_printk(__func__, fmt, ##args); \
- } while (0)
+ drm_printk(KERN_DEBUG, DRM_UT_DRIVER, __func__, "", fmt, ##args)
+
+#define DRM_DEV_DEBUG_KMS(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, \
+ ##args)
#define DRM_DEBUG_KMS(fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_KMS)) \
- drm_ut_debug_printk(__func__, fmt, ##args); \
- } while (0)
+ drm_printk(KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, ##args)
+
+#define DRM_DEV_DEBUG_PRIME(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "", \
+ fmt, ##args)
#define DRM_DEBUG_PRIME(fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_PRIME)) \
- drm_ut_debug_printk(__func__, fmt, ##args); \
- } while (0)
+ drm_printk(KERN_DEBUG, DRM_UT_PRIME, __func__, "", fmt, ##args)
+
+#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", \
+ fmt, ##args)
#define DRM_DEBUG_ATOMIC(fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_ATOMIC)) \
- drm_ut_debug_printk(__func__, fmt, ##args); \
- } while (0)
+ drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", fmt, ##args)
+
+#define DRM_DEV_DEBUG_VBL(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, \
+ ##args)
#define DRM_DEBUG_VBL(fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_VBL)) \
- drm_ut_debug_printk(__func__, fmt, ##args); \
- } while (0)
-
-#define _DRM_DEFINE_DEBUG_RATELIMITED(level, fmt, args...) \
- do { \
- if (unlikely(drm_debug & DRM_UT_ ## level)) { \
- static DEFINE_RATELIMIT_STATE( \
- _rs, \
- DEFAULT_RATELIMIT_INTERVAL, \
- DEFAULT_RATELIMIT_BURST); \
- \
- if (__ratelimit(&_rs)) { \
- drm_ut_debug_printk(__func__, fmt, \
- ##args); \
- } \
- } \
- } while (0)
+ drm_printk(KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, ##args)
+
+#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...) \
+({ \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ DEFAULT_RATELIMIT_INTERVAL, \
+ DEFAULT_RATELIMIT_BURST); \
+ if (__ratelimit(&_rs)) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level, \
+ __func__, "", fmt, ##args); \
+})
/**
* Rate limited debug output. Like DRM_DEBUG() but won't flood the log.
@@ -253,14 +273,22 @@ void drm_err(const char *format, ...);
* \param fmt printf() like format string.
* \param arg arguments
*/
+#define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...) \
+ DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args)
#define DRM_DEBUG_RATELIMITED(fmt, args...) \
- _DRM_DEFINE_DEBUG_RATELIMITED(CORE, fmt, ##args)
+ DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args)
+#define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...) \
+ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args)
#define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...) \
- _DRM_DEFINE_DEBUG_RATELIMITED(DRIVER, fmt, ##args)
+ DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args)
+#define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...) \
+ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args)
#define DRM_DEBUG_KMS_RATELIMITED(fmt, args...) \
- _DRM_DEFINE_DEBUG_RATELIMITED(KMS, fmt, ##args)
+ DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args)
+#define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...) \
+ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args)
#define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...) \
- _DRM_DEFINE_DEBUG_RATELIMITED(PRIME, fmt, ##args)
+ DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args)
/*@}*/
--
2.8.0.rc3.226.g39d4020
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