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-rw-r--r--include/linux/acpi.h22
1 files changed, 20 insertions, 2 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 7a8f2cd66c8b..0e2569031a6f 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -37,6 +37,7 @@
#include <linux/list.h>
#include <linux/mod_devicetable.h>
+#include <linux/dynamic_debug.h>
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
@@ -589,6 +590,14 @@ static inline __printf(3, 4) void
acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
#endif /* !CONFIG_ACPI */
+#if defined(CONFIG_ACPI) && defined(CONFIG_DYNAMIC_DEBUG)
+__printf(3, 4)
+void __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle, const char *fmt, ...);
+#else
+#define __acpi_handle_debug(descriptor, handle, fmt, ...) \
+ acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__);
+#endif
+
/*
* acpi_handle_<level>: Print message with ACPI prefix and object path
*
@@ -610,11 +619,19 @@ acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
#define acpi_handle_info(handle, fmt, ...) \
acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__)
-/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */
-#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
+#if defined(DEBUG)
#define acpi_handle_debug(handle, fmt, ...) \
acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__)
#else
+#if defined(CONFIG_DYNAMIC_DEBUG)
+#define acpi_handle_debug(handle, fmt, ...) \
+do { \
+ DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
+ if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
+ __acpi_handle_debug(&descriptor, handle, pr_fmt(fmt), \
+ ##__VA_ARGS__); \
+} while (0)
+#else
#define acpi_handle_debug(handle, fmt, ...) \
({ \
if (0) \
@@ -622,5 +639,6 @@ acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
0; \
})
#endif
+#endif
#endif /*_LINUX_ACPI_H*/
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