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authorJoe Perches <joe@perches.com>2012-05-13 21:56:25 +0000
committerDavid S. Miller <davem@davemloft.net>2012-05-15 13:45:02 -0400
commit3a3bfb61e64476ff1e4ac3122cb6dec9c79b795c (patch)
tree174111aa514c3d94a0c7953467b335e88b58b364 /include/linux/net.h
parent9f486619f4545a8e36fa0fcae60722cb9e075887 (diff)
net: Add net_ratelimited_function and net_<level>_ratelimited macros
__ratelimit() can be considered an inverted bool test because it returns true when not ratelimited. Several tests in the kernel tree use this __ratelimit() function incorrectly. No net_ratelimit uses are incorrect currently though. Most uses of net_ratelimit are to log something via printk or pr_<level>. In order to minimize the uses of net_ratelimit, and to start standardizing the code style used for __ratelimit() and net_ratelimit(), add a net_ratelimited_function() macro and net_<level>_ratelimited() logging macros similar to pr_<level>_ratelimited that use the global net_ratelimit instead of a static per call site "struct ratelimit_state". Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/net.h')
-rw-r--r--include/linux/net.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/net.h b/include/linux/net.h
index be60c7f5e14..2d7510f3893 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -250,6 +250,29 @@ extern struct socket *sockfd_lookup(int fd, int *err);
#define sockfd_put(sock) fput(sock->file)
extern int net_ratelimit(void);
+#define net_ratelimited_function(function, ...) \
+do { \
+ if (net_ratelimit()) \
+ function(__VA_ARGS__); \
+} while (0)
+
+#define net_emerg_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_emerg, fmt, ##__VA_ARGS__)
+#define net_alert_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_alert, fmt, ##__VA_ARGS__)
+#define net_crit_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_crit, fmt, ##__VA_ARGS__)
+#define net_err_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__)
+#define net_notice_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_notice, fmt, ##__VA_ARGS__)
+#define net_warn_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
+#define net_info_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
+#define net_dbg_ratelimited(fmt, ...) \
+ net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__)
+
#define net_random() random32()
#define net_srandom(seed) srandom32((__force u32)seed)