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| author | Jim Cromie <jim.cromie@gmail.com> | 2022-09-12 07:28:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-24 15:02:01 +0200 |
| commit | 84ec67288c10fbf136aa050d00b0fe7a89655da0 (patch) | |
| tree | 602caed7f1a0dcb77f029b228d0b4bf0d5226112 /include/drm/drm_print.h | |
| parent | drm_print: interpose drm_*dbg with forwarding macros (diff) | |
| download | linux-84ec67288c10fbf136aa050d00b0fe7a89655da0.tar.xz linux-84ec67288c10fbf136aa050d00b0fe7a89655da0.zip | |
drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro
For CONFIG_DRM_USE_DYNAMIC_DEBUG=y, wrap __drm_dbg() & __drm_dev_dbg()
in one of dyndbg's Factory macros: _dynamic_func_call_no_desc().
This adds the callsite descriptor into the code, and an entry for each
into /proc/dynamic_debug/control.
#> echo class DRM_UT_ATOMIC +p > /proc/dynamic_debug/control
CONFIG_DRM_USE_DYNAMIC_DEBUG=y/n is configurable because of the .data
footprint cost of per-callsite control; 56 bytes/site * ~2k for i915,
~4k callsites for amdgpu. This is large enough that a kernel builder
might not want it.
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20220912052852.1123868-5-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/drm/drm_print.h')
| -rw-r--r-- | include/drm/drm_print.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index c429c258c957..2d2cef76b5c1 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -384,8 +384,14 @@ void __drm_dev_dbg(const struct device *dev, enum drm_debug_category category, } \ }) +#if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) #define drm_dev_dbg(dev, cat, fmt, ...) \ __drm_dev_dbg(dev, cat, fmt, ##__VA_ARGS__) +#else +#define drm_dev_dbg(dev, cat, fmt, ...) \ + _dynamic_func_call_no_desc(fmt, __drm_dev_dbg, \ + dev, cat, fmt, ##__VA_ARGS__) +#endif /** * DRM_DEV_DEBUG() - Debug output for generic drm code @@ -492,7 +498,13 @@ void ___drm_dbg(enum drm_debug_category category, const char *format, ...); __printf(1, 2) void __drm_err(const char *format, ...); +#if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) #define __drm_dbg(fmt, ...) ___drm_dbg(fmt, ##__VA_ARGS__) +#else +#define __drm_dbg(cat, fmt, ...) \ + _dynamic_func_call_no_desc(fmt, ___drm_dbg, \ + cat, fmt, ##__VA_ARGS__) +#endif /* Macros to make printk easier */ |