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| author |   Peter Zijlstra <peterz@infradead.org> | 2015-03-26 17:45:37 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-03-27 09:42:01 +0100 |
| commit | 7bd3e239d6c6d1cad276e8f130b386df4234dcd7 (patch) | |
| tree | 260eb35894afb72ab32e860f37960b2dd6114e12 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | locking/rtmutex: Rename argument in the rt_mutex_adjust_prio_chain() documentation as well (diff) | |
| download | wireguard-linux-7bd3e239d6c6d1cad276e8f130b386df4234dcd7.tar.xz wireguard-linux-7bd3e239d6c6d1cad276e8f130b386df4234dcd7.zip | |
locking: Remove atomicy checks from {READ,WRITE}_ONCE
The fact that volatile allows for atomic load/stores is a special case
not a requirement for {READ,WRITE}_ONCE(). Their primary purpose is to
force the compiler to emit load/stores _once_.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions