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net: implement netif_cond_dbg macro

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For reporting things that may or may not be serious, depending on some
 condition, netif_cond_dbg will check the condition and print the report
 at either dbg (if the condition is true) or the specified level.

Suggested-by: Jon Cooper <jcooper@solarflare.com>
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2017-01-27 15:02:26 +00:00 committed by David S. Miller
parent 2d3d4ec016
commit f617f27653
1 changed files with 9 additions and 0 deletions
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9
include/linux/netdevice.h
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@ -4347,6 +4347,15 @@ do { \
})
#endif
/* if @cond then downgrade to debug, else print at @level */
#define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \
do { \
if (cond) \
netif_dbg(priv, type, netdev, fmt, ##args); \
else \
netif_ ## level(priv, type, netdev, fmt, ##args); \
} while (0)
#if defined(VERBOSE_DEBUG)
#define netif_vdbg netif_dbg
#else