• Paul E. McKenney's avatar
    rcu: Reduce rcutorture tracing · 52494535
    Paul E. McKenney authored
    Currently, rcutorture traces every read-side access.  This can be
    problematic because even a two-minute rcutorture run on a two-CPU system
    can generate 28,853,363 reads.  Normally, only a failing read is of
    interest, so this commit traces adjusts rcutorture's tracing to only
    trace failing reads.  The resulting event tracing records the time
    and the ->completed value captured at the beginning of the RCU read-side
    critical section, allowing correlation with other event-tracing messages.
    Signed-off-by: default avatarPaul E. McKenney <paul.mckenney@linaro.org>
    Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
    Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
    [ paulmck: Add fix to build problem located by Randy Dunlap based on
      diagnosis by Steven Rostedt. ]
    52494535
rcupdate.c 11.9 KB