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    Subject[PATCH v2 04/23] linux/net.h: use unique identifier for each struct _ddebug
    Date
    Changes on x86-64 later in this series require that all struct _ddebug
    descriptors in a translation unit uses distinct identifiers. Realize
    that for net_dbg_ratelimited by generating such an identifier via
    __UNIQUE_ID and pass that to an extra level of macros.

    No functional change.

    Cc: netdev@vger.kernel.org
    Acked-by: Jason Baron <jbaron@akamai.com>
    Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
    ---
    include/linux/net.h | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    diff --git a/include/linux/net.h b/include/linux/net.h
    index 651fca72286c..397243a25f56 100644
    --- a/include/linux/net.h
    +++ b/include/linux/net.h
    @@ -260,7 +260,7 @@ do { \
    #define net_info_ratelimited(fmt, ...) \
    net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
    #if defined(CONFIG_DYNAMIC_DEBUG)
    -#define net_dbg_ratelimited(fmt, ...) \
    +#define _net_dbg_ratelimited(descriptor, fmt, ...) \
    do { \
    DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
    if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
    @@ -268,6 +268,8 @@ do { \
    __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
    ##__VA_ARGS__); \
    } while (0)
    +#define net_dbg_ratelimited(fmt, ...) \
    + _net_dbg_ratelimited(__UNIQUE_ID(ddebug), fmt, ##__VA_ARGS__)
    #elif defined(DEBUG)
    #define net_dbg_ratelimited(fmt, ...) \
    net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__)
    --
    2.19.1.3.g1d92a00e68
    \
     
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