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author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-11-15 00:26:40 (GMT) |
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committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-01-08 22:14:55 (GMT) |
commit | 52494535103986dbbf689b44d8c2c7efe2132b16 (patch) | |
tree | 88dd5a9d064608e9711c36f05b3b4aab8e255a4f /Documentation | |
parent | dc975e94f322e60fa8fcc44dec1820fde4de174c (diff) | |
download | linux-52494535103986dbbf689b44d8c2c7efe2132b16.tar.xz |
rcu: Reduce rcutorture tracing
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: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
[ paulmck: Add fix to build problem located by Randy Dunlap based on
diagnosis by Steven Rostedt. ]
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions