• Johannes Berg's avatar
    mac80211: bracket driver tracing · 4efc76bd
    Johannes Berg authored
    Currently, driver tracing is sometimes invoked
    after and sometimes before the actual driver
    callback. This is fine as long as the driver
    has no tracing itself, but as soon as it does
    it gets confusing.
    
    To make traces containing such information
    easier to read, introduce a return tracer in
    mac80211 that essentially brackets any driver
    tracing, and invoke the real trace before the
    driver's callback, only showing the return
    value, if any, afterwards.
    
    Since tracing records the process, there's no
    problem with overlapping calls if that should
    happen.
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    4efc76bd
driver-ops.h 9.92 KB