Author: hselasky
Date: Sat Feb 17 21:25:19 2018
New Revision: 329470
URL: https://svnweb.freebsd.org/changeset/base/329470
Log:
Add support for printk_ratelimit() function macro and improve the existing
printk_ratelimited() function macro to return a boolean stating if there
was a printout, true, or not, false.
MFC after: 1 week
Submitted by: Johannes Lundberg <johal...@gmail.com>
Sponsored by: Mellanox Technologies
Modified:
head/sys/compat/linuxkpi/common/include/linux/printk.h
Modified: head/sys/compat/linuxkpi/common/include/linux/printk.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/printk.h Sat Feb 17
20:59:12 2018 (r329469)
+++ head/sys/compat/linuxkpi/common/include/linux/printk.h Sat Feb 17
21:25:19 2018 (r329470)
@@ -106,10 +106,16 @@ print_hex_dump_bytes(const char *prefix_str, const int
print_hex_dump(NULL, prefix_str, prefix_type, 16, 1, buf, len, 0);
}
-#define printk_ratelimited(...) do { \
+#define printk_ratelimit() ({ \
static linux_ratelimit_t __ratelimited; \
- if (linux_ratelimited(&__ratelimited)) \
+ linux_ratelimited(&__ratelimited); \
+})
+
+#define printk_ratelimited(...) ({ \
+ bool __retval = printk_ratelimit(); \
+ if (__retval) \
printk(__VA_ARGS__); \
-} while (0)
+ __retval; \
+})
#endif /* _LINUX_PRINTK_H_ */
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