Hello!
The following are changes to documentation and rcutorture:
1. Export trace_clock_local() in order to allow rcutorture event
tracing to emit the time of the beginning of the RCU read-side
critical section at the point where a failure is detected.
2. Reduce rcutorture's read-side tracing to include only failures,
thus cutting the number of events down to something reasonable
(normally zero, in fact!).
3. Add atomic_xchg() to the list of atomic operations and memory
barriers, courtesy of Richard Braun.
Thanx, Paul
Documentation/atomic_ops.txt | 2 ++
Documentation/memory-barriers.txt | 1 +
include/linux/rcupdate.h | 13 ++++++++++---
include/trace/events/rcu.h | 19 ++++++++++++++-----
kernel/rcupdate.c | 9 ++++++---
kernel/rcutorture.c | 31 ++++++++++++++++++++++++-------
kernel/trace/trace_clock.c | 1 +
7 files changed, 58 insertions(+), 18 deletions(-)
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