diff options
| author | Christoph Lameter <[email protected]> | 2010-12-06 11:40:03 -0600 |
|---|---|---|
| committer | Tejun Heo <[email protected]> | 2010-12-17 15:18:04 +0100 |
| commit | cfb824349556904b319464139be5c75fce983b0d (patch) | |
| tree | e0f0094ffc8732457ae1233e5e2890788e3817ff /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | 908ee0f122bf2a67414854af5b90c6621d186a71 (diff) | |
highmem: Use this_cpu_xx_return() operations
Use this_cpu operations to optimize access primitives for highmem.
The main effect is the avoidance of address calculations through the
use of a segment prefix.
V3->V4
- kmap_atomic_idx: Do not return a value.
- Use __this_cpu_dec without HIGHMEM_DEBUG
Cc: Peter Zijlstra <[email protected]>
Cc: Catalin Marinas <[email protected]>
Acked-by: H. Peter Anvin <[email protected]>
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions