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| author | Peter Zijlstra <peterz@infradead.org> | 2016-04-18 01:16:03 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-06-16 10:48:31 +0200 |
| commit | a8bcccaba162632c3963259b8a442c6b490f4c68 (patch) | |
| tree | d44f5e4ab5ff4f56e444352a18fd00716a69a7af /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | locking/atomic, arch/tile: Implement atomic{,64}_fetch_{add,sub,and,or,xor}() (diff) | |
| download | linux-a8bcccaba162632c3963259b8a442c6b490f4c68.tar.gz linux-a8bcccaba162632c3963259b8a442c6b490f4c68.zip | |
locking/atomic, arch/x86: Implement atomic{,64}_fetch_{add,sub,and,or,xor}()
Implement FETCH-OP atomic primitives, these are very similar to the
existing OP-RETURN primitives we already have, except they return the
value of the atomic variable _before_ modification.
This is especially useful for irreversible operations -- such as
bitops (because it becomes impossible to reconstruct the state prior
to modification).
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions